CN103348582A - Motor drive-control apparatus - Google Patents

Motor drive-control apparatus Download PDF

Info

Publication number
CN103348582A
CN103348582A CN2011800665692A CN201180066569A CN103348582A CN 103348582 A CN103348582 A CN 103348582A CN 2011800665692 A CN2011800665692 A CN 2011800665692A CN 201180066569 A CN201180066569 A CN 201180066569A CN 103348582 A CN103348582 A CN 103348582A
Authority
CN
China
Prior art keywords
motor
rotating speed
control device
drive control
motor drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2011800665692A
Other languages
Chinese (zh)
Other versions
CN103348582B (en
Inventor
佐藤俊彰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of CN103348582A publication Critical patent/CN103348582A/en
Application granted granted Critical
Publication of CN103348582B publication Critical patent/CN103348582B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/24—Vector control not involving the use of rotor position or rotor speed sensors
    • H02P21/32—Determining the initial rotor position
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
    • H02P21/18—Estimation of position or speed
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/24—Vector control not involving the use of rotor position or rotor speed sensors
    • H02P21/26—Rotor flux based control
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/02—Details
    • H02P1/029—Restarting, e.g. after power failure

Abstract

A drive-control of a motor is executed with high performance, by comprehending the rotational speed of the motor before starting up thereof, and executing the drive-control of the motor with a sensor-less rotor-position detection method after starting up the motor. A pre-start-up rotational speed detection unit (27) detects the rotational speed of a fan motor (51) before starting up thereof. A sensor-less control circuit (28) estimates the rotor position and rotational speed of the fan motor (51), after the fan motor (51) has been started-up using the sensor-less rotor-position detection method. A microcomputer (29) controls the fan motor (51) on the basis of a first rotational-speed signal (FG1) or a second rotational-speed signal (FG2). The first rotational-speed signal (FG1) indicates the rotational speed of the fan motor (51) detected by the pre-start-up rotational speed detection unit (27), and the second rotational-speed signal (FG2) indicates the rotational speed of the fan motor (51) estimated by the sensor-less control circuit (28). A switching circuit (30) executes a signal switching operation such that the first rotational-speed signal (FG1) is inputted into the microcomputer (29) before the fan motor (51) is started up, and the second rotational-speed signal (FG2) is inputted into the microcomputer (29) after the fan motor (51) has been started up.

Description

Motor drive control device
Technical field
The present invention relates to motor drive control device.
Background technology
The off-premises station of heat pump assembly has various devices such as compressor, fan and heat exchanger.As the drive source of compressor and fan, for example use brushless DC(direct current) motor.Off-premises station adopts the structure of carrying air by the rotation heat exchanger of fan, in order to carry out heat exchange at off-premises station.
, the fan of off-premises station sometimes before electric motor starting since the influence of wind etc. in rotation.If fan rotates before electric motor starting, then might be in off-premises station inside just carry air in heat exchanger, also passable situation of drive motors not appears.Therefore, prestarting rotating speed of motor is grasped in expectation.
About grasping the method for prestarting motor speed, patent documentation 1(Japanese kokai publication hei 7-337080 communique is for example arranged) disclosed method.
Summary of the invention
The problem that invention will solve
In the brushless DC motor drive unit that drives brushless DC motor, attempt adopting so-called no-rotor position sensor mode in order to promote cost degradation, namely do not using under the situation of rotor-position sensors such as Hall element, to the rotor-position of brushless DC motor with rotating speed is estimated and carry out motor-driven.But, the no-rotor position sensor mode usually can only be behind electric motor starting estimated rotor position, even thereby since for example the influence of wind etc. make the fan that is connected with the motor that is in the unstart state when rotated, also do not carry out the estimation of prestarting rotor-position.Therefore, in the no-rotor position sensor mode, be in and grasp prestarting fan at the state with which kind of rotating speed rotation, can not carry out the driving control of the motor corresponding with rotation status.
In addition, based on above-mentioned reason, in the no-rotor position sensor mode, motor starts from rotation status, and the inverter that comprises in then might the brushless DC motor drive unit produces faults such as overcurrent or overvoltage, and heat pump assembly etc. is stopped.
On the other hand, can consider to use the method for above-mentioned patent documentation 1 as the means of when carrying out motor-driven control, grasping motor speed.But in the method, testing circuit is complicated and can not realize that cost reduces, and can not be applicable to the control mode of carrying out sine wave drive, thereby is difficult to carry out high efficiency and low noise high performance motor-driven control.
Therefore, problem of the present invention is to grasp prestarting motor speed, carries out the driving control of high performance motor after starting in the no-rotor position sensor mode.
Be used for solving the means of problem
The motor drive control device of a first aspect of the present invention has prestart rotating speed test section, no transducer estimation portion, control part and commutation circuit.Prestart rotating speed test section detects prestarting rotating speed of motor.The rotor-position of the motor after no transducer estimation portion estimates to start in the no-rotor position sensor mode, and estimate rotating speed of motor according to the rotor-position that estimates.Control part carries out the control of motor according to the 1st tach signal or the 2nd tach signal.The 1st tach signal is that expression is by the signal of the detected rotating speed of motor of prestart rotating speed test section.The signal of the 2nd tach signal rotating speed of motor that to be expression estimated by no transducer estimation portion.Commutation circuit is imported the change action of the signal of control part, makes that control part is transfused to the 1st tach signal before electric motor starting, and control part is transfused to the 2nd tach signal behind electric motor starting.
According to this motor drive control device, import the switching of the signal of control part by commutation circuit, make that control part is transfused to by the detected prestarting rotating speed of motor of prestart rotating speed test section (i.e. the 1st tach signal) before electric motor starting, be transfused to the rotating speed of motor (i.e. the 2nd tach signal) after the starting that is estimated by no transducer estimation portion at control part behind the electric motor starting.Therefore, control part can be grasped prestarting rotating speed of motor, and will be used for the control of motor with the rotating speed of motor that the no-rotor position sensor mode estimates after starting.Therefore, motor drive control device can be grasped prestarting rotating speed of motor, and carries out the driving control of high performance motor after starting in the no-rotor position sensor mode.In addition, observe from the control part side, control part only is transfused to a signal as the signal of expression motor speed.Therefore, control part can only have the input port of the signal of an expression motor speed.
The motor drive control device of a second aspect of the present invention is in the described motor drive control device of first aspect, and prestart rotating speed test section, no transducer estimation portion and commutation circuit are encapsulated in the integrated circuit package body.
Thus, motor drive control device self is very compact, and then realizes having installed the miniaturization of the off-premises station etc. of motor drive control device.
The motor drive control device of a third aspect of the present invention has prestart rotating speed test section, no transducer estimation portion and control part.Prestart rotating speed test section detects prestarting rotating speed of motor.The rotor-position of the motor after no transducer estimation portion estimates to start in the no-rotor position sensor mode, and estimate rotating speed of motor according to the rotor-position that estimates.Control part carries out the control of motor according to the 1st tach signal or the 2nd tach signal.The 1st tach signal is that expression is by the signal of the detected rotating speed of motor of prestart rotating speed test section.The signal of the 2nd tach signal rotating speed of motor that to be expression estimated by no transducer estimation portion.In addition, control part has switch unit.Switch unit carries out the change action of employed signal when the control motor, makes and control motor according to the 1st tach signal before electric motor starting, controls motor according to the 2nd tach signal behind electric motor starting.
According to this motor drive control device, carry out the switching of signal in the inside of control part, make before electric motor starting and in Electric Machine Control, to adopt by the detected prestarting rotating speed of motor of prestart rotating speed test section (i.e. the 1st tach signal), the rotating speed of motor (i.e. the 2nd tach signal) after the starting that employing is estimated by no transducer estimation portion in Electric Machine Control behind the electric motor starting.Thus, control part can be grasped prestarting rotating speed of motor, and will be used for the control of motor with the rotating speed of motor that the no-rotor position sensor mode estimates after starting.Therefore, motor drive control device can be grasped prestarting rotating speed of motor, and carries out the driving control of high performance motor after starting in the no-rotor position sensor mode.In addition, do not need as " commutation circuit " in the first aspect, thereby motor drive control device self compares with first aspect even the off-premises station of motor drive control device has been installed than first aspect compactness, also can realize miniaturization more.
The motor drive control device of a fourth aspect of the present invention is in first～third aspect aspect any one in the described motor drive control device, and no transducer estimation portion uses the Mathematical Modeling of being scheduled to relevant with the control of motor to come the estimated rotor position.
According to this motor drive control device, when the estimated rotor position, use the predetermined Mathematical Modeling relevant with the control of motor, thereby can estimate rotor-position accurately.
The motor drive control device of a fifth aspect of the present invention is in first～third aspect aspect any one in the described motor drive control device, and no transducer estimation portion comes the estimated rotor position by making electric current flow through motor.
According to this motor drive control device, by motor is switched on, utilize the information (for example impose on the voltage of motor or flow through electric current of motor etc.) of "on" position to come the position of estimated rotor, thereby can estimate rotor-position accurately.
The motor drive control device of a sixth aspect of the present invention be aspect first～the 5th in the described motor drive control device in any one aspect, motor drive control device also has inverter.Inverter is to the motor supply capability.And no transducer estimation portion only carries out the estimation of rotor-position when carrying out the control of inverter.
According to this motor drive control device, because estimated rotor position when carrying out the control of inverter only, thereby can estimate rotor-position reliably.And, when the estimated rotor position, can directly use normally used voltage detector or current detector in the control at inverter, thereby need not append new circuit, can realize the miniaturization of motor drive control device at low cost.
The motor drive control device of a seventh aspect of the present invention be aspect first～the 6th in the described motor drive control device in any one aspect, no transducer estimation portion can not estimate prestarting rotating speed of motor.
In this motor drive control device, can not estimate prestarting rotating speed of motor though there is transducer estimation portion, be provided with " prestart rotating speed test section " as the function portion that grasps prestarting rotating speed of motor.And the signal that is illustrated in the motor speed that uses in the Electric Machine Control is switched behind the prestart of motor.Thus, can easily utilize simple structure to grasp prestarting rotating speed of motor, and after starting, will be used for the control of motor with the rotating speed of motor that the no-rotor position sensor mode estimates.Therefore, motor drive control device can be grasped prestarting rotating speed of motor, and critically carries out the driving control of motor after starting in the no-rotor position sensor mode.
The motor drive control device of a eighth aspect of the present invention be aspect first～the 7th in the described motor drive control device in any one aspect, prestart rotating speed test section carries out prestarting rotating speed of motor and detects under the situation of not using the predetermined Mathematical Modeling relevant with the control of motor.
According to this motor drive control device, prestart rotating speed test section is not to detect rotating speed of motor in so-called no-rotor position sensor mode as using the predetermined Mathematical Modeling relevant with the control of motor.Therefore, even not starting of motor, prestart rotating speed test section also can detect rotating speed of motor reliably.
The motor drive control device of a ninth aspect of the present invention is in the first～the eight aspect aspect any one in the described motor drive control device, and prestart rotating speed test section detects electric current being flow through carry out prestarting rotating speed of motor under the situation of motor.
According to this motor drive control device, prestart rotating speed test section is not to detect rotating speed of motor in so-called no-rotor position sensor mode as motor being switched on to the estimated rotor position.Therefore, even not starting of motor, prestart rotating speed test section also can detect rotating speed of motor reliably.
The motor drive control device of a tenth aspect of the present invention be aspect first～the 9th in the described motor drive control device in any one aspect, motor drive control device also has inverter.Inverter is to the motor supply capability.And even do not carry out the control of inverter, prestart rotating speed test section also carries out the detection of prestarting rotating speed of motor.
According to this motor drive control device, even before not carrying out the electric motor starting of inverter control, prestart rotating speed test section also can detect rotating speed of motor reliably.
The motor drive control device of a eleventh aspect of the present invention be aspect the 8th～the tenth in the described motor drive control device in any one aspect, prestart rotating speed test section is estimated prestarting rotor-position, and uses its result to carry out the detection of prestarting motor speed.
The prestart rotating speed test section of this motor drive control device adopts the no approach sensor that can estimate prestarting rotor-position.Therefore, even before electric motor starting, prestart rotating speed test section also can detect rotating speed of motor reliably.
The motor drive control device of a twelveth aspect of the present invention be aspect the 8th～the tenth in the described motor drive control device in any one aspect, prestart rotating speed test section detects prestarting rotating speed of motor according to the induced voltage that prestart produces in motor.
In this motor drive control device, even at prestart, prestart rotating speed test section also can be according to motor rotation and issuable induced voltage detects prestarting rotating speed of motor.Therefore, can utilize simpler structure to detect prestarting rotating speed of motor.
The motor drive control device of a thirteenth aspect of the present invention be aspect first～the 12 in the described motor drive control device in any one aspect, control part makes motor start in the no-rotor position sensor mode under the situation of the not enough desired speed of the 1st tach signal.And under the 1st tach signal was situation more than the desired speed, control part did not make electric motor starting.
At this, suppose that motor drive control device is used as the driving control system of the fan electromotor that comprises in the off-premises station of heat pump assembly for example.Because under the state that the influence of wind etc. has been rotated, needing only its rotating speed is more than the desired speed, then the heat exchanger in the off-premises station just has been transferred enough air, so this motor drive control device does not make electric motor starting at prestarting motor.On the contrary, if the not enough desired speed of rotating speed, even then the hypothesis motor rotates, the amount of air that flows to the heat exchanger in the off-premises station is also not enough, thereby motor drive control device makes electric motor starting.Like this, owing to carry out according to the starting of prestarting rotating speed of motor control motor, thereby the power consumption that electric motor starting can be caused is controlled to be Min., and can not reduce the performance of the heat pump assembly that this motor drive control device has been installed.In addition, because being about to prestarting rotation status is defined, even thereby during the external disturbance such as wind that swept suddenly, current of electric and impose on the increase of the voltage of motor can be not excessive yet, the situation that motor-driven system stops owing to overcurrent or overvoltage can not take place.
The motor drive control device of a fourteenth aspect of the present invention be aspect first～the 13 in the described motor drive control device in any one aspect, the change action to the 2nd tach signal is to carry out under the situation that can estimate rotor-position by no transducer estimation portion to signal from the 1st tach signal.
According to this motor drive control device, behind the electric motor starting and can estimate under the situation of rotor-position by no transducer estimation portion, represent the change action of the signal of motor speed.No transducer estimation portion can estimate rotor-position and mean and can estimate rotating speed of motor according to the rotor-position that has estimated.Therefore, motor can drive reliably in the no-rotor position sensor mode.
The motor drive control device of a fifteenth aspect of the present invention be aspect first～the 14 in the described motor drive control device in any one aspect, the signal form of the 1st tach signal is identical with the signal form of the 2nd tach signal.
Thus, under the situation of the change action of the signal of representing motor speed by commutation circuit (first aspect), the input port that control part can be used this signal is made as has only one.Therefore, even be transfused under the situation of any one party in the 1st tach signal or the 2nd tach signal, do not need to change control mode according to the signal of importing yet.And, under the situation of in control part, carrying out described change action (third aspect), though be provided with the 1st tach signal respectively with input port and the 2nd tach signal input port at control part, do not need according to employed signal change control mode.
The motor drive control device of a sixteenth aspect of the present invention be aspect first～the 15 in the described motor drive control device in any one aspect, control part is according to the 1st tach signal and the 2nd tach signal, judges that no transducer estimation portion has no abnormal.
For example, when employed signal is switched to the 2nd tach signal from the 1st tach signal when carrying out Electric Machine Control, the 1st tach signal before supposing to be about to switch is represented " 0rpm " rotating speed in addition, and the 2nd tach signal after just having switched is represented the rotating speed of " 0rpm ".In this case, though because the rotating possibility of motor is bigger has transducer estimation portion and rotating speed of motor is not judged to be " 0rpm ", thereby control part can be judged to be no transducer estimation portion and has unusually.Therefore, motor drive control device can be carried out the control that the state according to no transducer estimation portion stops the starting of motor immediately, the fail safe that can keep height.
The motor drive control device of a seventeenth aspect of the present invention be aspect first～the 16 in the described motor drive control device in any one aspect, motor is the drive source of the fan of one of equipment of comprising in the off-premises station as heat pump assembly.
According to this motor drive control device, even fan also can easily be grasped prestarting rotating speed of motor because the influence of wind etc. has been rotated at prestart, and after starting, can critically carry out the driving control of motor.
The invention effect
Motor drive control device according to a first aspect of the invention can be grasped prestarting rotating speed of motor, and carries out high performance motor-driven control in the no-rotor position sensor mode after starting.In addition, control part can only have the input port of the signal of an expression motor speed.
Motor drive control device according to a second aspect of the invention, motor drive control device self is very compact, and then realizes having installed the miniaturization of the off-premises station etc. of motor drive control device.
Motor drive control device according to a third aspect of the invention we can be grasped prestarting rotating speed of motor, and carries out the driving control of high performance motor after starting in the no-rotor position sensor mode.In addition, motor drive control device self is than first aspect compactness, compares with first aspect also and can further realize miniaturization even the off-premises station of motor drive control device has been installed.
With the motor drive control device of the 5th aspect, can estimate rotor-position accurately according to a forth aspect of the invention.
Motor drive control device according to a sixth aspect of the invention can estimate rotor-position reliably.And, need not to append new circuit, can realize the miniaturization of motor drive control device at low cost.
Motor drive control device according to a seventh aspect of the invention can be grasped prestarting rotating speed of motor, and critically carries out the driving control of motor after starting in the no-rotor position sensor mode.
According to an eighth aspect of the invention with the motor drive control device of the 9th aspect, even not starting of motor, prestart rotating speed test section also can detect rotating speed of motor reliably.
With the tenth on the one hand motor drive control device, even before electric motor starting, prestart rotating speed test section also can detect rotating speed of motor reliably according to the tenth aspect of the invention.
Motor drive control device according to a twelfth aspect of the invention can utilize simpler structure to detect prestarting rotating speed of motor.
Motor drive control device according to a thirteenth aspect of the invention, owing to carry out according to the starting of prestarting rotating speed of motor control motor, thereby the power consumption that electric motor starting can be caused suppresses to be Min..And can not reduce the performance of the heat pump assembly that this motor drive control device has been installed.In addition, because being about to prestarting rotation status is defined, even thereby during the external disturbance such as wind that swept suddenly, current of electric and impose on the increase of the voltage of motor can be not excessive yet, motor-driven system can not stop owing to overcurrent or overvoltage.
Motor drive control device according to a fourteenth aspect of the invention, motor can drive reliably in the no-rotor position sensor mode.
Motor drive control device according to a fifteenth aspect of the invention, control part does not need to change control mode according to the 1st tach signal of importing or the 2nd tach signal, does not need according to the 1st tach signal that uses in the control of motor or the 2nd tach signal change control mode yet.
Motor drive control device according to a sixteenth aspect of the invention can be carried out the control that the state according to no transducer estimation portion stops the starting of motor immediately, the fail safe that can keep height.
Motor drive control device according to a seventeenth aspect of the invention even fan also can easily be grasped prestarting rotating speed of motor because the influence of wind etc. has been rotated at prestart, and can be carried out the driving control of high performance motor after starting.
Description of drawings
Fig. 1 is the block diagram of the internal structure of the overall structure of system of the expression motor drive control device that adopted the 1st execution mode and motor drive control device.
Fig. 2 is the figure of structure that schematically illustrates the off-premises station of heat pump assembly.
Fig. 3 is the figure of an example that schematically illustrates the structure of prestart rotating speed test section.
Fig. 4 is the figure of an example that the structure of no sensor control circuit is shown.
Fig. 5 is the flow chart for the action of the motor drive control device of explanation the 1st execution mode.
Fig. 6 is the figure of structure of motor drive control device that schematically illustrates the variation 1F of the 1st execution mode.
Fig. 7 is the block diagram that the internal structure of the overall structure of system of the motor drive control device that has adopted the 2nd execution mode and motor drive control device is shown.
Embodiment
Below, use accompanying drawing to describe motor drive control device of the present invention in detail.
＜the 1 execution mode 〉
(1) summary
Fig. 1 is the structure chart of driving control system for electric machine 100 integral body of motor drive control device 20 that comprises brushless DC motor 51 and be used for to drive the present embodiment of this brushless DC motor 51.Brushless DC motor 51 is fan electromotors, is used as the off-premises station 10(of heat pump assembly with reference to Fig. 2) in the drive source of outdoor fan 15 of one of the equipment that comprises.Motor drive control device 20 is installed in this off-premises station 10.
(1-1) off-premises station
At this, use Fig. 2 brief description off-premises station 10.At this, about heat pump assembly, be that example describes with the off-premises station of heat pump water heater.Off-premises station 10 mainly has various devices such as compressor 11, water heat exchanger 12, expansion valve 13, evaporator 14 and outdoor fan 15.Compressor 11, water heat exchanger 12, expansion valve 13 and evaporator 14 are connected in turn and are constituted freeze cycle (refrigerating cycle).The cold-producing medium compression that compressor 11 will circulate in freeze cycle.Be provided with heat exchange water route 16 at water heat exchanger 12, carry the water of coming this heat exchange water route 16, to pass through from the boiler unit (not shown) that is connected with off-premises station 10, can carry out heat exchange between the water that in heat exchange water route 16, flows through and the cold-producing medium.Expansion valve 13 is with the valve with electrically motorized operation of electric means control, and the cold-producing medium that circulates in freeze cycle is reduced pressure.Evaporator 14 is used for making between cold-producing medium in the cold-producing medium circulation and the air and carries out heat exchange, and cold-producing medium is evaporated.Outdoor fan 15 for example is propeller fan, will be directed to evaporator 14 from off-premises station 10 air outside by rotation.
In this off-premises station 10, by drive compression machine 11 cold-producing medium is circulated, water heat exchanger 12 is played a role, the water heating that will in heat exchange water route 16, pass through as condenser.
(1-2) motor
The following describes brushless DC motor 51.The brushless DC motor 51 of present embodiment is three phase electric machine, has stator 52 and rotor 53.Stator 52 comprises by the U phase of star-star connection, V phase, drive coil Lu, the Lv of W phase, Lw.The end of each drive coil Lu, Lv, Lw is connected with coil terminals TU, TV, the TW of the U phase of extending from inverter 25, V phase, the wiring separately of W phase respectively.The other end of each drive coil Lu, Lv, Lw interconnects as terminal TN.Drive coil Lu, the Lv of this three-phase, Lw make by rotor 53 rotations and produce the induced voltage corresponding with the position of its rotary speed and rotor 53.
Rotor 53 comprises the permanent magnet at the two poles of the earth that are made of the N utmost point and the S utmost point, is rotated with respect to stator 52 centered by rotating shaft.The rotation of rotor 53 is exported to outdoor fan 15 by the output shaft (not shown) that is on the same axle center with its rotating shaft.
Below, it is fan electromotor 51 that brushless DC motor 51 is recorded and narrated.
(2) structure of motor drive control device
Below, the structure of the motor drive control device 20 of present embodiment is described.As shown in Figure 1, the motor drive control device 20 of present embodiment has rectification part 21, smmothing capacitor 22, voltage detection department 23, current detecting part 24, inverter 25, gate drive circuit 26, prestart rotating speed test section 27, no sensor control circuit 28(and is equivalent to not have transducer estimation portion), microcomputer 29(is equivalent to control part) and commutation circuit 30.
These funtion parts that constitute motor drive control device 20 for example are installed on the printed board.Especially in the present embodiment, gate drive circuit 26, prestart rotating speed test section 27, no sensor control circuit 28 and commutation circuit 30 are encapsulated in the integrated circuit package body pa1.That is, each function portion 26,27,28,30 is made of an IC or HIC.
(2-1) rectification part
Rectification part 21 utilizes 4 diode D1a, D1b, D2a, D2b to constitute the bridge shape.Specifically, diode D1a and D1b, D2a and D2b are connected in series respectively mutually.Each cathode terminal of diode D1a, D2a all is connected with the positive side terminal of smmothing capacitor 22, plays a role as the positive side lead-out terminal of rectification part 21.Each anode terminal of diode D1b, D2b all is connected with the minus side terminal of smmothing capacitor 22, plays a role as the minus side lead-out terminal of rectification part 21.Diode D1a, D1b tie point each other is connected with source power supply 91 respectively with diode D2a, D2b tie point each other.That is diode D1a, D1b tie point and the effect of bearing the input of rectification part 21 respectively of diode D2a, D2b tie point each other each other.
Rectification part 21 with this structure generates DC power supply by the alternating voltage from source power supply 91 outputs is carried out rectification, and this DC power supply is offered smmothing capacitor 22.
(2-2) smmothing capacitor
One end of smmothing capacitor 22 is connected with the positive side lead-out terminal of rectification part 21, and the other end is connected with the minus side lead-out terminal of rectification part 21.The DC power supply that 22 pairs of smmothing capacitors provide from rectification part 21, the voltage that namely is rectified after portion's 21 rectifications carry out smoothing processing.Below, for convenience of explanation, will be called " level and smooth back voltage VfI " via the voltage that smmothing capacitor 22 carry out after level and smooth.Should level and smooth back voltage VfI be the pulsation voltage lower than the voltage of DC power supply, be applied to back grade of inverter 25 that namely is connected with outlet side of smmothing capacitor 22.
In addition, about the type of capacitor, can enumerate electrolytic capacitor, ceramic capacitor, tantalum capacitor etc.In the present embodiment, adopting the situation of electrolytic capacitor with smmothing capacitor 22 is example.
(2-3) voltage detection department
Voltage detection department 23 is connected with the outlet side of smmothing capacitor 22, for detection of the i.e. value of level and smooth back voltage VfI of the both end voltage of smmothing capacitor 22.Especially voltage detection department 23 carries out the voltage detecting action after fan electromotor 51 startings.
This voltage detection department 23 for example constitutes two resistance and the smmothing capacitor 22 that will be connected in series mutually and is connected in parallel, and level and smooth back voltage VfI is carried out dividing potential drop, but do not illustrate.The magnitude of voltage of the tie point between two resistance is transfused to no sensor control circuit 28.
(2-4) current detecting part
Current detecting part 24 is connected between smmothing capacitor 22 and the inverter 25, and is the minus side lead-out terminal side that is connected in smmothing capacitor 22.Current detecting part 24 detects the current of electric Im that flows through fan electromotor 51 in fan electromotor 51 starting backs.
This current detecting part 24 for example is made of the amplifying circuit of the operational amplifier that has used shunt resistance and the both end voltage of this resistance is amplified, but does not illustrate.Be transfused to no sensor control circuit 28 by current detecting part 24 detected current of electric.
(2-5) inverter
Inverter 25 is connected with the outlet side of smmothing capacitor 22.As shown in Figure 1, inverter 25 comprises that a plurality of insulated gate bipolar transistors (below abbreviate transistor as) Q3a, Q3b, Q4a, Q4b, Q5a, Q5b and a plurality of backflow are with diode D3a, D3b, D4a, D4b, D5a, D5b.Transistor Q3a and Q3b, Q4a and Q4b, Q5a and Q5b are connected in series respectively mutually, each diode D3a～D5b is connected in parallel with each transistor Q3a～Q5b as follows: namely the cathode terminal of transistorized collector terminal and diode is connected, and the anode terminal of transistorized emitter terminal and diode is connected.Inverter 25 is applied in the level and smooth back voltage from smmothing capacitor 22, and each transistor Q3a～Q5b generates driving voltage SU, SV, the SW that is used for fan motor 51 thus carrying out conducting by the timing of gate drive circuit 26 indications and ending.This driving voltage SU, SV, SW export to fan electromotor 51 from each tie point NU, NV, the NW of each transistor Q3a and Q3b, Q4a and Q4b, Q5a and Q5b.That is, inverter 25 is to fan electromotor 51 supply capabilities.
Especially which kind of rotating speed the inverter 25 of present embodiment is according to the rotating speed of prestarting fan electromotor 51, makes fan electromotor 51 startings or suspends starting.Specifically, under the situation of the not enough desired speed of the rotating speed of prestarting fan electromotor 51, send gate voltage Gu, Gx, Gv, Gy, Gw, the Gz that the expression starting begins from no sensor control circuit 28, thereby inverter 25 is to fan electromotor 51 outputting drive voltage SU, SV, SW.Thus, fan electromotor 51 begins starting.But, under the rotating speed of prestarting fan electromotor 51 is situation more than the desired speed, do not send gate voltage Gu, Gx, Gv, Gy, Gw, the Gz of expression starting beginning from gate drive circuit 26, thereby inverter 25 is not to fan electromotor 51 outputting drive voltage SU, SV, SW.Thus, fan electromotor 51 keeps inoperative state.
This is considered to be in the prestarting moment, makes fan electromotor 51 be rotated with enough rotating speeds if outdoor fan 15 is subjected to the influence of wind etc., and then evaporator 14 has been transferred enough air by the rotation of outdoor fan 15.In this case, do not have impairedly as the function of the evaporator 14 of heat pump assembly, thereby inverter 25 can be to fan electromotor 51 output drive signal SU, SV, SW.But if the rotating speed deficiency of prestarting fan electromotor 51 (comprising the situation that prestarting fan electromotor 51 does not rotate), then evaporator 14 is not transferred enough air.That is, can not play one's part to the full as evaporator 14, thereby inverter 25 makes fan electromotor 51 startings to fan electromotor 51 output drive signal SU, SV, SW.
(2-6) gate drive circuit
Gate drive circuit 26 is according to the command voltage Vpwm from no sensor control circuit 28, makes the conducting of each transistor Q3a～Q5b of inverter 25 and the state variation of ending.Specifically, gate drive circuit 26 generates gate voltage Gu, Gx, Gv, Gy, Gw, the Gz that applies to the grid of each transistor Q3a～Q5b, feasible 51 outputs have the duty ratio of being determined by no sensor control circuit 28 from driving voltage SU from inverter 25 to fan electromotor, SV, SW.Gate voltage Gu, Gx, Gv, Gy, Gw, the Gz that generates is applied to the gate terminal of each transistor Q3a～Q5b.
(2-7) prestart rotating speed test section
The input of prestart rotating speed test section 27 is connected with the W phase coil terminals TW of fan electromotor 51, and output is connected with commutation circuit 30.That is, we can say that prestart rotating speed test section 27 is positioned at rear-stage side than inverter 25.This prestart rotating speed test section 27 mainly when 51 rotations of prestart fan electromotor, detects the rotating speed of prestarting fan electromotor 51 according to the induced voltage Vwn that produces from this motor 51.
In Fig. 3, schematically illustrated an example of the structure of this prestart rotating speed test section 27.Figure 3 illustrates the situation that prestart rotating speed test section 27 is made of filter 27a, comparator 27b and operational part 27c.Filter 27a for example is low pass filter, is transfused to the induced voltage Vwn by the drive coil Lw generation of the fan electromotor 51 that rotates, and removes noise contribution and high order harmonic component composition from this induced voltage Vwn.Comparator 27b is transfused to by the induced voltage Vwn behind the filter 27a and the reference voltage V ref with scheduled voltage.Comparator 27b is according to the size of these voltages of importing, and output is based on the pulse voltage of induced voltage Vwn.Operational part 27c is transfused to this pulse voltage, the frequency of this voltage of union, the rotating speed of computing fan electromotor 51.But the tach signal of the rotating speed of the prestarting fan electromotor 51 of the expression of obtaining like this becomes the fixed-frequency of pulse signal with cycle corresponding with the rotating speed of this motor 51 or signal has pulse signal with the corresponding duty ratio of the rotating speed of this motor 51.This tach signal is transfused to microcomputer 29 by commutation circuit 30.
As mentioned above, the prestart rotating speed test section 27 of present embodiment utilizes simpler structure to detect the rotating speed of fan electromotor 51.Namely, prestart rotating speed test section 27 constitutes under the situation of not using the relevant predetermined Mathematical Modeling of the control with fan electromotor 51 as employed during motor-driven in the no-rotor position sensor mode or fan electromotor 51 not being switched on, and carries out the detection of the rotating speed of fan electromotor 51.Therefore, prestart rotating speed test section 27 constitutes under the state of fan electromotor 51 unstarts, namely do not carry out carrying out the detection of the rotating speed of fan electromotor 51 under the situation of control of inverter 25.Therefore, even the fan electromotor 51 as unstart rotating owing to the influence of wind etc., utilize no-rotor position sensor mode described later can't carry out under the situation of estimation of rotor-position, prestart rotating speed test section 27 also can detect its rotating speed.
But on the contrary, the prestart rotating speed test section of present embodiment 27 is owing to be aforesaid simpler structure, thus at fan electromotor 51 actual startings and its rotating speed up to a certain degree the time, can not detect rotating speed accurately.Therefore, prestart rotating speed test section 27 pins that we can say present embodiment be as hereinafter described just because of with no-rotor position sensor mode fan motor 51, and for the set funtion part of the rotating speed that detects prestarting fan electromotor 51.
Below, for convenience of explanation, it is " the 1st tach signal FG1 " that the signal of representing the rotating speed of prestarting fan electromotor 51 is recorded and narrated.
(2-8) no sensor control circuit
No sensor control circuit 28 is connected with voltage detection department 23, the current detecting part 24 of the preceding-stage side of inverter 25, and also is connected with gate drive circuit 26, microcomputer 29 and commutation circuit 30.No sensor control circuit 28 is the circuit with no-rotor position sensor mode fan motor 51.
Specifically, no sensor control circuit 28 is estimated the rotor-position of the fan electromotor 51 after starting in the no-rotor position sensor mode, and is estimated the rotating speed of fan electromotor 51 according to the rotor-position that estimates.Below, the signal of the rotating speed of the fan electromotor 51 after the expression starting recorded and narrated be " the 2nd tach signal FG2 ".The 2nd tach signal FG2 is transfused to microcomputer 29 by commutation circuit 30.And, no sensor control circuit 28 is when having sent the running instruction that comprises rotary speed instruction Vfg here from microcomputer 29, according to this running instruction, the estimated rotor-position that goes out and each testing result of rotating speed, voltage detection department 23 and current detecting part 24, determine the duty ratio of driving voltage SU, SV, SW in the no-rotor position sensor mode.Therefore, the control result of no sensor control circuit 28 (command voltage Vpwm) uses when gate drive circuit 26 generates gate voltage Gu, Gx, Gv, Gy, Gw, Gz.
Wherein, so-called no-rotor position sensor mode refers to following this mode: using the various parameters of the characteristic of expression fan electromotor 51, the level and smooth back voltage VfI(after fan electromotor 51 startings is the testing result of voltage detection department 23), the current of electric Im(of fan electromotor 51 is the testing result of current detecting part 24), the predetermined Mathematical Modeling relevant with the control of fan electromotor 51 etc., the mode of carrying out the estimation of rotor-position and rotating speed, controlling, controlling etc. at the PI of current of electric at the PI of rotating speed.As the various parameters of characteristic of expression fan electromotor 51, can enumerate the winding resistance, inductance composition, induced voltage, number of poles of employed fan electromotor 51 etc.
Fig. 4 shows simply and considers that Mathematical Modeling carries out the example of structure of the no sensor control circuit 28 of no-rotor position sensor control.The no sensor control circuit 28 of Fig. 4 mainly is made of motor model operational part 28a, the rotor-position estimation 28b of portion, the rotating speed estimation 28c of portion, LPF28d, rotating speed control part 28e and current control division 28f.Motor model operational part 28a uses the various parameters of characteristic of expression fan electromotor 51 as motor model, according to the command voltage of motor 51, the estimated rotor-position that goes out and the estimated rotating speed that goes out, the ideal value of computing current of electric.The rotor-position estimation 28b of portion will carry out the result of subtraction processing as input between this ideal value and the current of electric Im that is gone out by current detecting part 24 actual detected, estimate the rotor-position of current time.The rotating speed estimation 28c of portion uses the estimated rotor-position that goes out to estimate the rotating speed of the fan electromotor 51 of current time.For the estimated result of the 28b of each estimation portion, 28c, carry out handling for the correction of " 0 " be used to the ideal value that makes current of electric and the difference of the current of electric Im of reality, and carry out the correction of motor model.LPF28d removes noise contribution and high order harmonic component composition from the rotating speed that estimates.Become the 2nd tach signal FG2 of expectation from the rotating speed of the fan electromotor 51 of LPF28d output by the 28g of waveform shaping portion, and export to microcomputer 29 by commutation circuit 30.But the 2nd tach signal FG2 and the 1st tach signal FG similarly become and have with the fixed-frequency of the pulse signal in corresponding cycle of the rotating speed of fan electromotor 51 or signal have pulse signal with the corresponding duty ratio of the rotating speed of this motor 51.
In addition, to from the rotating speed of the fan electromotor 51 of LPF28d output, with the running instruction of sending from microcomputer 29 carry out the subtraction processing between the rotary speed instruction Vfg that comprises.Rotating speed control part 28e carries out PI control to rotating speed behind the result who is transfused to the subtraction processing.Current control division 28f is according to as the control result's of rotating speed control part 28e d shaft torque current-order Id*, for example make q shaft current instruction Iq carry out Current Control for " 0 " such instruction " Iq*=0 " and by voltage detection department 23 detected level and smooth back voltage VfI, and generates such as making and become command voltage Vpwm based on the electric current of these instructions.So that current of electric carries out PI control for the mode of " 0 ".By this control of current control division 28f, generate the command voltage Vpwm of the duty ratio that comprises driving voltage SU, SV, SW, and input gate drive circuit 26.In addition, command voltage Vpwm is transfused to motor model operational part 28a, carries out the further correction of motor model.
No sensor control circuit 28 with this structure only can be described as when having carried out the control of inverter 25 by microcomputer 29 and gate drive circuit 26 etc., carries out the estimation of rotor-position.What is called is carried out the situation of the control of inverter 25, namely is equivalent to fan electromotor 51 and starts according to starting order and drive.In other words, no sensor control circuit 28 can not be estimated the rotating speed of fan electromotor 51 at fan electromotor 51 prestarts.This is because as mentioned above in the no-rotor position sensor mode, use the estimated rotor-position that goes out when estimating rotating speed, thereby can not the estimated rotor position in prestarting fan electromotor 51.
In addition, the no sensor control circuit 28 of present embodiment also carries out the control of the change action of commutation circuit 30, but this point does not illustrate in Fig. 4.About the change action of commutation circuit 30, will in " (2-10) commutation circuit 30 " part, describe.
(2-9) microcomputer
As shown in Figure 1, microcomputer 29 is main with commutation circuit 30 and do not have sensor control circuit 28 and be connected.In addition, microcomputer 29 also is connected with the outdoor pusher side control part of each equipment of integral body control off-premises station 10, but this point does not illustrate.
Microcomputer 29 carries out the control of fan electromotor 51 according to the rotating speed of fan electromotor 51, and comprises the running instruction of starting order and rotary speed instruction Vfg to no sensor control circuit 28 outputs.Especially as shown in Figure 1 microcomputer 29 has a rotating speed input port po1 as the input port of the tach signal of fan electromotor 51.Therefore, microcomputer 29 is transfused to from the 1st tach signal FG1 of prestart rotating speed test section 27 outputs and any one signal from the 2nd tach signal FG2 of no sensor control circuit 28 outputs, and according to the 1st tach signal FG1 or the 2nd tach signal FG2 control fan electromotor 51.
Control during-starting-
At this, the control during to microcomputer 29 starting fan motors 51 describes.At fan electromotor 51 prestarts, microcomputer 29 necessarily is transfused to the 1st tach signal FG1.At fan electromotor 51 prestarts, microcomputer 29 compares the 1st tach signal FG1 and desired speed, judges whether the rotating speed of prestarting fan electromotor 51 is more than the desired speed.If the represented rotating speed of the 1st tach signal FG1 is more than the desired speed, then fan electromotor 51 is because the influence of wind etc. and being rotated with enough rotating speeds, even inoperative fan electromotor 51, evaporator 14 also is transferred enough air, thereby microcomputer 29 keeps making the inoperative state of fan electromotor 51.That is, in this case, do not send the running instruction of the starting order that comprises fan electromotor 51 from microcomputer 29 to no sensor control circuit 28, thereby each transistor Q3a～Q5b remain off state of inverter 25.On the contrary, if the not enough desired speed of the 1st tach signal FG1 then is not transferred enough air at current time evaporator 14, thereby microcomputer 29 makes fan electromotor 51 startings.In this case, 28 send the starting order that comprises fan electromotor 51 and the running instruction of rotary speed instruction Vfg from microcomputer 29 to no sensor control circuit, thereby each transistor Q3a～Q5b of inverter 25 carries out conducting and ends in different timings.
Above-mentioned desired speed is according to characteristic of fan electromotor 51, outdoor fan 15 and evaporator 14 etc., is set to suitable value in advance by theory calculating and emulation, experiment etc.
Control during the running of-no-rotor position sensor-
After fan electromotor 51 startings, the tach signal of input microcomputer 29 just becomes the 2nd tach signal FG2 rather than the 1st tach signal FG1 immediately, and microcomputer 29 is according to the running instruction of the 2nd tach signal FG2 output fan electromotor 51.
In addition, microcomputer 29 is comprising that by monitoring the tach signal of importing switches each represented rotating speed constantly of each tach signal FG1, FG2 of front and back, also can judge the state of no sensor control circuit 28 thus.For example, when the tach signal of input microcomputer 29 switches to the 2nd tach signal FG2 from the 1st tach signal FG1, the 1st tach signal FG1 before being about to switch illustrates " 0rpm " rotating speed in addition, and the 2nd tach signal FG2 after just having switched illustrates " 0rpm ".In this case, microcomputer 29 is judged to be no sensor control circuit 28 sides has unusually.Although this is that no sensor control circuit 28 is judged to be rotating speed " 0rpm " because the possibility of fan electromotor 51 rotations is bigger.
Like this, be under the situation of abnormality being judged to be no sensor control circuit 28, microcomputer 29 also can instruct to the running that no sensor control circuit 28 transmissions stop the starting of fan electromotor 51 at once, and the driving of fan electromotor 51 is stopped.In addition, microcomputer 29 also can send the information that the no sensor control circuit 28 of expression is in abnormality to the outside of outdoor pusher side control part or off-premises station 10.
(2-10) commutation circuit
Commutation circuit 30 is made of the switch that is connected with prestart rotating speed test section 27, no sensor control circuit 28 and microcomputer 29.Commutation circuit 30 bases are imported the change action of the tach signal of microcomputer 29 from the control of the change action of no sensor control circuit 28.
Specifically, commutation circuit 30 is at fan electromotor 51 prestarts, the output port that makes the output port of the 1st tach signal FG1 of the rotating speed input port po1 of microcomputer 29 and prestart rotating speed test section 27 become connection status, makes rotating speed input port po1 and do not have the 2nd a tach signal FG2 of sensor control circuit 28 becomes notconnect state, is transfused to microcomputer 29 in order to make from the 1st tach signal FG1 of prestart rotating speed test section 27 outputs.On the contrary, in fan electromotor 51 starting back and sent from no sensor control circuit 28 under the situation of switching command of tach signal, commutation circuit 30 makes the output port of the 2nd tach signal FG2 of rotating speed input port po1 and no sensor control circuit 28 become connection status, make the output port of the 1st tach signal FG1 of rotating speed input port po1 and prestart rotating speed test section 27 become notconnect state, is transfused to microcomputer 29 in order to make from the 2nd tach signal FG2 of no sensor control circuit 28 outputs.
Like this, in the present embodiment, utilizing simple structure is commutation circuit 30, with any one signal input microcomputer 29 among the 1st tach signal FG1 or the 2nd tach signal FG2.Therefore, in the present embodiment, the 1st tach signal FG1 and the 2nd tach signal FG2 all are pulse signals as the front is narrated, and the signal form of the 1st tach signal FG1 is identical with the signal form of the 2nd tach signal FG2.
The change action of-tach signal-
At this, the connecting object of commutation circuit 30 with rotating speed input port po1 described from the opportunity that prestart rotating speed test section 27 sides switch to no sensor control circuit 28 sides.Commutation circuit 30 switches to 2nd tach signal FG2 with the tach signal of importing microcomputer 29 from the 1st tach signal FG1 in fan electromotor 51 starting backs and in predetermined timing, can consider following three kinds of patterns about this " predetermined timing ".
(Mode A) at first carries out the detection of rotor-position and rotating speed after just starting.According to its testing result, 28 pairs of fan electromotors 51 of no sensor control circuit are forced energising, make the fixed-site of rotor 53 in the precalculated position.By this action, no sensor control circuit 28 can estimate rotor-position.Commutation circuit 30 is carried out action that rotor-position estimates at no sensor control circuit 28 and is become the possible moment and carry out the change action of tach signal.
Under the situation of the detection of the rotor-position that does not carry out above-mentioned Mode A and rotating speed, 28 pairs of fan electromotors 51 of no sensor control circuit are forced energising, make rotor-position be fixed on the precalculated position (Mode B).By this action, no sensor control circuit 28 can estimate rotor-position, thereby commutation circuit 30 is carried out action that rotor-position estimates at no sensor control circuit 28 and become the possible moment and carry out the change action of tach signal.
(pattern C) is made as and is in because the influence of wind etc. has been started at the fan electromotor 51 of the state that rotates.At this moment, at the state of the rotating speed etc. of this motor 51 of rotation, no sensor control circuit 28 can carry out the detection of rotor-position and rotating speed sometimes according to.In this case, even do not carry out switching at the pressure of fan electromotor 51, no sensor control circuit 28 also can estimate rotor-position.Therefore, commutation circuit 30 is carried out action that rotor-position estimates at no sensor control circuit 28 and is become the possible moment and carry out the change action of tach signal.
Above-mentioned Mode A～C is summarized as follows, in the present embodiment, we can say commutation circuit 30 be no sensor control circuit 28 become can the situation of estimated rotor position under, carry out the change action of tach signal from the 1st tach signal FG1 to the 2nd tach signal FG2.Because if fan electromotor 51 starting and the driving condition of this motor 51 is stable afterwards then can estimate rotor-position, thereby not have sensor control circuit 28 and can export the 2nd tach signal FG2.
Which kind of in addition, about adopting the pattern among Mode A～C, can suitably determine according to the specification of the off-premises station 10 of installation room external fan 15 etc.
(3) action
Below, use Fig. 5 that the action of the motor drive control device 20 of present embodiment is described.Fig. 5 is the flow chart of the action carried out of expression motor drive control device 20.At first, suppose to be commutation circuit 30 be connected the rotating speed input port po1 of microcomputer 29 with the output port of the 1st tach signal FG1 of prestart rotating speed test section 27 state.
Step S1～S2: under the situation that the running that microcomputer 29 is obtained outdoor fan 15 from the outdoor pusher side control part of off-premises station 10 begins to indicate (step S1: be), it is the rotating speed (step S2) of this motor 51 of current time that prestart rotating speed test section 27 detects fan electromotor 51 prestarts.Thus, the 1st tach signal FG1 is transfused to microcomputer 29 by commutation circuit 30.
Step S3～S4: microcomputer 29 compares (step S3) with the 1st tach signal FG1 and the desired speed that detects among the step S2.If the 1st tach signal FG1 is desired speed above (step S4: be), then microcomputer 29 is judged as at the inoperative fan electromotor 51(of current time step S4).In this case, not 51 outputting drive voltage SU, SV, SW from inverter 25 to fan electromotor.
Step S5: when having passed through the scheduled time from the action of step S2, the later action of execution in step S2 repeatedly.That is, when being judged as in step S2 under the situation of inoperative fan electromotor 51, the rotating speed of 27 pairs of prestarting fan electromotors 51 of retry prestart rotating speed test section detects action.
Step S6: if in step S3 the not enough desired speed of the 1st tach signal FG1 (step S3: not), microcomputer 29 is judged as and makes fan electromotor 51 startings.In this case, microcomputer 29 is exported the running instruction that comprises starting order and rotary speed instruction Vfg to no sensor control circuit 28, and 51 outputting drive voltage SU, SV, SW from inverter 25 to fan electromotor, fan electromotor 51 begin starting.
Step S7～S8: before no sensor control circuit 28 can the estimated rotor position (step S7: not), the state that commutation circuit 30 keeps the rotating speed input port po1 with microcomputer 29 to be connected with prestart rotating speed test section 27 sides.Can estimated rotor position (step S7: be) if there is not sensor control circuit 28, then commutation circuit 30 switches to no sensor control circuit 28 sides with the connecting object of the rotating speed input port po1 of microcomputer 29 from prestart rotating speed test section 27 sides, so that with the 2nd tach signal FG2 input microcomputer 29, but not the 1st tach signal FG1(step S8).
Step S9: the fan electromotor 51 that has carried out starting in step S6 is implemented no-rotor position sensor by no sensor control circuit 28 and drives.
Step S10～S12: (step S10: not), fan electromotor 51 continues to be implemented by no sensor control circuit 28 the no-rotor position sensor driving of step S9 before the driving that obtains outdoor fan 15 stops indication.Driving voltage SU, the SV that inverter 25 carries out to fan electromotor 51, the output of SW are stopped, and fan electromotor 51 stops to drive (step S11).Commutation circuit 30 switches to prestart rotating speed test section 27 sides with the connecting object of the rotating speed input port po1 of microcomputer 29 from no sensor control circuit 28 sides, so that with the 1st tach signal FG1 input microcomputer 29, but not the 2nd tach signal FG2(step S12).
(4) feature
(4-1) according to the motor drive control device 20 of present embodiment, at fan electromotor 51 prestarts, microcomputer 29 is transfused to by the rotating speed of prestart rotating speed test section 27 detected prestarting fan electromotors 51 (i.e. the 1st tach signal FG1).After fan electromotor 51 startings, microcomputer 29 is transfused to the rotating speed (i.e. the 2nd tach signal FG2) of the fan electromotor 51 after the starting that is estimated by no sensor control circuit 26.Like this, switch the tach signal that is transfused to microcomputer 29 by commutation circuit 30.Therefore, microcomputer 29 can easily be grasped the rotating speed of prestarting fan electromotor 51, and the rotating speed of the fan electromotor 51 that will estimate in the no-rotor position sensor mode after starting is used for the control of fan electromotor 51.Therefore, motor drive control device 20 can be grasped the rotating speed of prestarting fan electromotor 51, and carries out the driving control of high performance fan electromotor 51 after starting in the no-rotor position sensor mode.
In addition, consider that from microcomputer 29 sides microcomputer 29 only is transfused to a tach signal (i.e. the 1st tach signal FG1 or the 2nd tach signal FG2), as the signal of the rotating speed of representing fan electromotor 51.Therefore, microcomputer 29 can only have an input port of importing the signal of the rotating speed of representing fan electromotor 51.
(4-2) in addition, in the present embodiment, prestart rotating speed test section 27, no sensor control circuit 28 and commutation circuit 30 are encapsulated in the integrated circuit package body.Thus, motor drive control device 20 self is very compact, and then realizes having installed the miniaturization of the off-premises station 10 of motor drive control device 20.
(4-3) in addition, according to the motor drive control device 20 of present embodiment, under the situation of fan electromotor 51 startings, no sensor control circuit 28 uses the predetermined Mathematical Modeling relevant with the control of fan electromotor 51 when the estimated rotor position.Therefore, can estimate rotor-position accurately.
(4-4) namely, according to the motor drive control device 20 of present embodiment, owing to only when carrying out the control of inverter 25, pass through no sensor control circuit 28 estimated rotor positions, thereby can estimate rotor-position reliably.And, when the estimated rotor position, can directly use normally used voltage detection department 23 or current detecting part 24 in the control of inverter 25, thereby need not append new circuit, can realize the miniaturization of motor drive control device 20 at low cost.
(4-5) in addition, in the present embodiment, though there is not the rotating speed that sensor control circuit 28 can not be estimated prestarting fan electromotor 52, the function portion that grasps the rotating speed of prestarting fan electromotor 51 is set up as " prestart rotating speed test section 27 ".And the tach signal FG1, the FG2 that use in the Electric Machine Control that microcomputer 29 carries out are switched behind the prestart of fan electromotor 51.Therefore, can easily utilize simple structure to grasp the rotating speed of prestarting fan electromotor 51 (i.e. the 1st tach signal FG1), and after starting, will be used for Electric Machine Control with the rotating speed of motor (i.e. the 2nd tach signal FG2) that the no-rotor position sensor mode estimates.Therefore, motor drive control device 20 can be grasped the rotating speed of prestarting fan electromotor 51, and carries out the driving control of high performance fan electromotor 51 after starting in the no-rotor position sensor mode.
(4-6) in addition, the prestart rotating speed test section 27 of present embodiment carries out the rotating speed detection of prestarting fan electromotor 51 under the situation of not using the predetermined Mathematical Modeling relevant with the control of fan electromotor 51.That is, prestart rotating speed test section 27 is not the rotating speed that detects fan electromotor 51 as using Mathematical Modeling in so-called no-rotor position sensor mode.Therefore, even not starting of fan electromotor 51, prestart rotating speed test section 27 also can detect the rotating speed of fan electromotor 51 reliably.
(4-7) in addition, the prestart rotating speed test section 27 of present embodiment is not as fan electromotor 51 being switched on to the estimated rotor position, detect rotating speed of motor in so-called no-rotor position sensor mode.Therefore, even not starting of fan electromotor 51, prestart rotating speed test section 27 also can detect the rotating speed of fan electromotor 51 reliably.
(4-8) in addition, even the prestart rotating speed test section 27 of present embodiment at fan electromotor 51 prestarts of the control of not carrying out inverter 25, also can detect the rotating speed of fan electromotor 51 reliably.
(4-9) specifically, even the prestart rotating speed test section 27 of present embodiment at prestart, also can be according to fan electromotor 51 rotation and issuable induced voltage Vwn detects the rotating speed of prestarting fan electromotor 51.Therefore, can utilize simpler structure to detect the rotating speed of prestarting fan electromotor 51.
(4-10) at prestarting fan electromotor 51 because under the state that the influence of wind etc. has been rotated, as long as its rotating speed is more than the desired speed, then the evaporator 14 in the off-premises station 10 is in the state that can carry out heat exchange with regard to being transferred enough air, so the motor drive control device 20 of present embodiment does not make fan electromotor 51 startings.On the contrary, if the not enough desired speed of rotating speed, even then hypothesis fan electromotor 51 is in rotation, the amount of air that flows to the evaporator 14 in the off-premises station 10 is also not enough, thereby motor drive control device 20 makes fan electromotor 51 startings.Like this, owing to control the starting execution of fan electromotor 51 according to the rotating speed of prestarting fan electromotor 51, thereby fan electromotor 51 can be started the power consumption that cause and suppress to be minimum.And, can not reduce the performance of the heat pump assembly that this motor drive control device 20 has been installed.In addition owing to be about to prestarting rotation status and limited, even thereby during the external disturbance such as wind that swept suddenly, the increase of current of electric and driving voltage can be not excessive yet, motor driven systems 100 can not stop owing to overcurrent or overvoltage.
(4-11) change action of signal from the 1st tach signal FG1 to the 2nd tach signal FG2 is in fan electromotor 51 starting backs and becomes and can carry out under the situation by no sensor control circuit 28 estimated rotor positions.Becoming no sensor control circuit 28 can estimate rotor-position and mean and become the rotating speed that can estimate fan electromotor 51 according to the rotor-position that estimated.Therefore, fan electromotor 51 can drive reliably in the no-rotor position sensor mode.
(4-12) signal form of the 1st tach signal FG1 is identical with the signal form of the 2nd tach signal FG2.Thus, the input port that this signal can be used of microcomputer 29 is made as and has only one.Therefore, even be transfused under the situation of any one party among the 1st tach signal FG1 or the 2nd tach signal FG2, do not need to change control mode according to the signal of importing yet.
(4-13) microcomputer 29 of present embodiment judges that according to the 1st tach signal FG1 and the 2nd tach signal FG2 no sensor control circuit 28 has no abnormal.Therefore, motor drive control device 20 can be carried out the control that the state according to no sensor control circuit 28 stops the starting of fan electromotor 51 immediately, can have the fail safe of height.
(4-14) motor 51 is drive sources of the outdoor fan 15 of one of equipment of comprising in the off-premises station 10 as heat pump assembly.According to this motor drive control device 20, even outdoor fan 15 since the influence of wind etc. rotated at prestart, also can easily grasp the rotating speed of prestarting fan electromotor 51, and after starting, also can critically carry out the driving control of fan electromotor 51.
(5) variation
(5-1) variation 1A
In above-mentioned the 1st execution mode, illustrated that no sensor control circuit 28 uses the Mathematical Modeling of being scheduled to relevant with the control of fan electromotor 51 to carry out the estimation of the rotor-position after the starting of fan electromotor 51.But, also can be that no sensor control circuit 28 comes the estimated rotor position by the fan electromotor 51 that the electric current that makes rotor-position detect usefulness flows through in the driving.According to this method, by using the information (for example driving voltage or current of electric etc.) of "on" position, estimated rotor position accurately.
(5-2) variation 1B
In addition, in above-mentioned the 1st execution mode, illustrated that prestart rotating speed test section 27 uses the induced voltage Vwm of fan electromotor 51 to detect the rotating speed of fan electromotor 51.But, also can be that prestart rotating speed test section 27 is estimated the rotor-position of prestarting fan electromotor 51, and uses its result to carry out the detection of the rotating speed of prestarting fan electromotor 51.That is, prestart rotating speed test section 27 in this case adopts can estimate the no approach sensor of prestarting rotor-position, rather than can not detect the structure of the rotating speed of fan electromotor 51 as so-called no-rotor position sensor mode at prestart.Thus, even at fan electromotor 51 prestarts, prestart rotating speed test section 27 also can detect the rotating speed of fan electromotor 51 reliably.
In addition, as the method for estimating prestarting rotor-position with above-mentioned no approach sensor, for example just like patent documentation 1(Japanese kokai publication hei 7-337080 communique) past shown in Figure 3 known method widely.In this no approach sensor, use the voltage between terminals (that is, resulting from the induced voltage of each phase) of each phase of fan electromotor 51 to carry out the detection of rotor-position.
(5-3) variation 1C
In above-mentioned the 1st execution mode, as shown in Figure 3, the rotating speed that prestart rotating speed test section 27 only uses the induced voltage of a phase to carry out prestarting fan electromotor 51 detects.But, also can be, the induced voltage that uses when detecting the rotating speed of prestarting fan electromotor 51 is not a phase, but two-phase or whole three-phase.In addition, in Fig. 3, when detecting the rotating speed of prestarting fan electromotor 51, use the induced voltage of W phase, but also can use the induced voltage of U phase or V phase to replace the W phase, namely be not limited to the detection mode of above-mentioned the 1st execution mode.
(5-4) variation 1D
In above-mentioned the 1st execution mode, illustrated that the 1st tach signal FG1 and the 2nd tach signal FG2 are pulse signals.But, also can be that the 1st tach signal FG1 and the 2nd tach signal FG2 are the d. c. voltage signals that rotating speed is expressed as magnitude of voltage.
(5-5) variation 1E
In above-mentioned the 1st execution mode, illustrated that commutation circuit 30 utilizes switch to constitute.But commutation circuit 30 also can not utilized switch, but utilizes formations such as logical circuit.
(5-6) variation 1F
In above-mentioned the 1st execution mode, the only situation of fan motor 51 of motor drive control device 20 has been described.But above-mentioned motor drive control device also can be applicable to and drive each motor 51 of control, 61 situation in the structure that fan electromotor as shown in Figure 6 51 and electric moto used in compressor 61 are connected in parallel.
Fig. 6 is the structure chart of fan electromotor 51 and electric moto used in compressor 61 system that comprises motor drive control device 120 200 when being connected in parallel.In addition, in Fig. 6, for simplified structure, omitted the concrete structure of rectification part 131 and each inverter 125,133 inside, but the structure of rectification part 131 and each inverter 125,133 inside is identical with Fig. 1.
Motor drive control device 120 is to have the 1st smmothing capacitor 122, voltage detection department 123, current detecting part 124, fan with the driving IC126 of inverter 125 and fan electromotor side in the structure of fan electromotor 51 sides.The 1st smmothing capacitor 122, voltage detection department 123, current detecting part 124, fan use inverter 125 identical with smmothing capacitor 22, voltage detection department 23, current detecting part 24, the inverter 25 of above-mentioned the 1st execution mode.The driving of fan electromotor 51 sides is identical with integrated circuit package body pa1 inside shown in Figure 1 with the internal structure of IC126.That is, drive with IC126 and comprise the structure identical with the gate drive circuit 26 of above-mentioned the 1st execution mode, prestart rotating speed test section 27, no sensor control circuit 28 and commutation circuit 30.
In addition, motor drive control device 120 is to have compressor with the driving IC136 of inverter 133 and electric moto used in compressor 61 sides in the structure as electric moto used in compressor 61 sides of the drive source of compressor 11.In addition, motor drive control device 120 has the 2nd smmothing capacitor 132 and the rectification part 131 that is connected with source power supply 91, as public structure for compressor 11 and outdoor fan 15.
Rectification part 131 is connected with source power supply 91, and the alternating voltage from source power supply 91 is carried out rectification.The 2nd smmothing capacitor 132 and the 1st smmothing capacitor 122 and fan are connected in parallel with inverter 125, and the DC power supply that provides from rectification part 131 is carried out smoothly.Voltage after level and smooth by the 2nd smmothing capacitor 132 is provided for compressor with inverter 133, and also offers the 1st smmothing capacitor 122 sides as fan side.Compressor generates with inverter 133 and is used for the driving voltage that the drive compression machine is used motor 61, and exports to this motor 61.The driving of electric moto used in compressor 61 sides has for the drive compression machine with IC136 and with the rotor-position estimating circuit of each the transistorized gate drive circuit in the inverter 133, estimated rotor position and according to rotor-position electric moto used in compressor 61 is not had the no sensor control circuit that transducer is controlled.
In addition, motor drive control device 120 has the microcomputer 130 that fan electromotor 51 and electric moto used in compressor 61 is carried out whole control.As shown in Figure 6, microcomputer 130 plays a role as fan electromotor control system 130a and electric moto used in compressor control system 130b.Fan electromotor control system 130a carries out the control identical with the microcomputer 29 of above-mentioned the 1st execution mode.The electric moto used in compressor 61 of electric moto used in compressor control system 130b sends the running that drives beginning or stop to wait and instructs.
(5-7) variation 1G
In addition, in above-mentioned the 1st execution mode, according to the change action that has illustrated respectively after prestart/starting from the 1st tach signal FG1 to the 2nd tach signal FG2, even but after once driving with desired speed, stop to drive and the rotation in moderating process under the situation about resetting, also can be suitable for the change action of the manner certainly.
＜the 2 execution mode 〉
In above-mentioned the 1st execution mode, illustrated by commutation circuit 30 and switched the tach signal FG1 of the fan electromotor 51 that is transfused to microcomputer 29, the situation of FG2 with hardware mode at the prestart of motor 51 and starting back.The change action that tach signal is described in the present embodiment is not to be undertaken by hardware configuration, but the situation of being undertaken by software configuration.
(1) structure
Fig. 7 is the structure chart of motor driven systems 300 integral body of motor drive control device 220 that comprises as the fan electromotor 51 of brushless DC motor and be used for driving the present embodiment of this fan electromotor 51.Motor drive control device 220 has rectification part 221, smmothing capacitor 222, voltage detection department 223, current detecting part 224, inverter 225, gate drive circuit 226, prestart rotating speed test section 227, no sensor control circuit 228(and is equivalent to not have transducer estimation portion) and microcomputer 229(be equivalent to control part).That is, the motor drive control device 220 of present embodiment is the structure that commutation circuit 30 is not set in the motor drive control device 20 of above-mentioned the 1st execution mode.These function portions that constitute motor drive control device 220 for example are installed on the printed board.Gate drive circuit 226, prestart rotating speed test section 227 and do not have sensor control circuit 228 and for example be encapsulated in the integrated circuit package body pa201 are made of an IC or HIC.
In addition, rectification part 221, smmothing capacitor 222, voltage detection department 223, current detecting part 224, inverter 225, gate drive circuit 226, prestart rotating speed test section 227 and do not have sensor control circuit 228 respectively with rectification part 21, smmothing capacitor 22, voltage detection department 23, current detecting part 24, inverter 25, gate drive circuit 26, the prestart rotating speed test section 27 of above-mentioned the 1st execution mode shown in Figure 1 with not have sensor control circuit 28 identical.Therefore, omitting the explanation of these function portions below, is that microcomputer 229 describes to the part different with above-mentioned the 1st execution mode only.
(1-1) microcomputer
Microcomputer 229 is directly with prestart rotating speed test section 227 and do not have sensor control circuit 228 and is connected, and the testing result that the is transfused to prestart rotating speed test section 227 i.e. testing result of the 1st tach signal FG1 and no sensor control circuit 228 is the 2nd tach signal FG2.That is, microcomputer 229 has two rotating speed input port po11, po12 that use port as the input of tach signal.
This microcomputer 229 and above-mentioned the 1st execution mode microcomputer are similarly, carry out judging the control that whether should carry out the starting of this motor 51 according to the 1st tach signal FG1 at fan electromotor 51 prestarts, carry out the control of this motor 51 in fan electromotor 51 starting backs according to the 2nd tach signal FG2.Therefore, microcomputer 229 has the switch unit 229a that carries out the change action of the tach signal of use when control fan electromotor 51.In addition, about switch unit 229a tach signal is switched to opportunity of the 2nd tach signal FG2 from the 1st tach signal FG1, can enumerate the opportunity of explanation in " change action of tach signal-" of above-mentioned the 1st execution mode.
In addition, microcomputer 229 carries out the control identical with the microcomputer 29 of above-mentioned the 1st execution mode.In addition, for example when exporting under " 0rpm " situation as the 2nd tach signal FG2 fixedly the time when no sensor control circuit 228 detects the rotating speed of fan electromotors 51 and at rotor-position, also can be judged to be no sensor control circuit 228 has unusually microcomputer 229.This is because the value of the 2nd tach signal FG2 is namely represented to carry out the estimation of rotor-position for " 0rpm ".
In addition, under the situation that fan electromotor 51 is forced to switch on, the 2nd tach signal FG2 that exports from no sensor control circuit 228 can be the value of the expression frequency suitable with forcing energising.In this case, microcomputer 229 can utilize the 2nd tach signal FG2 to notify current fan electromotor 51 forcing in the energising.
(2) feature
(2-1) according to the motor drive control device 220 of present embodiment, carry out the switching of signal in microcomputer 229 inside, make at fan electromotor 51 prestarts, rotating speed (i.e. the 1st tach signal FG1) by prestart rotating speed test section 227 detected prestarting fan electromotors 51 is used in the Electric Machine Control, after fan electromotor 51 starting, the rotating speed (i.e. the 2nd tach signal FG2) of the fan electromotor 51 after the starting that is estimated by no sensor control circuit 228 is used in the Electric Machine Control.Therefore, microcomputer 229 can easily be grasped the rotating speed of prestarting fan electromotor 51, and the rotating speed of the fan electromotor 51 that will estimate in the no-rotor position sensor mode after starting is used for the control of motor.Therefore, can grasp the rotating speed of prestarting fan electromotor 51, and after starting, carry out the driving control of high performance fan electromotor 51 in the no-rotor position sensor mode.
In addition, do not need to arrange " commutation circuit 30 " as in above-mentioned the 1st execution mode, thereby motor drive control device 220 self is than above-mentioned the 1st execution mode compactness, the off-premises station 10 of motor drive control device 220 has been installed has been compared with above-mentioned the 1st execution mode, also can realize further miniaturization.
(2-2) in addition, same in the motor drive control device 220 of present embodiment, no sensor control circuit 228 uses the predetermined Mathematical Modeling relevant with the control of fan electromotor 51 when the estimated rotor position.Therefore, can estimate rotor-position accurately.
(2-3) namely, same in the present embodiment, owing to only when carrying out the control of inverter 225, pass through no sensor control circuit 28 estimated rotor positions, thereby can estimate rotor-position reliably.And, when the estimated rotor position, can directly use normally used voltage detection department 223 and current detecting part 224 in the control of inverter 225, thereby need not append new circuit, can realize the miniaturization of motor drive control device 220 at low cost.
(2-4) in addition, same in the present embodiment, though do not have the rotating speed that sensor control circuit 228 can not be estimated prestarting fan electromotor 51, be provided with the function portion as the rotating speed of the prestarting fan electromotor 51 of grasp of " prestart rotating speed test section 227 ".And the tach signal FG1, the FG2 that use in the Electric Machine Control that microcomputer 229 carries out are switched behind the prestart of fan electromotor 51.Therefore, the rotating speed that can easily utilize simple structure to grasp prestarting fan electromotor 51 is the 1st tach signal FG1, and the rotating speed of motor that will estimate in the no-rotor position sensor mode after starting is that the 2nd tach signal FG2 is used for Electric Machine Control.Therefore, motor drive control device 220 can be grasped the rotating speed of prestarting fan electromotor 51, and carries out the driving control of high performance fan electromotor 51 after starting in the no-rotor position sensor mode.
(2-5) in addition, same in the present embodiment, prestart rotating speed test section 227 carries out prestarting fan electromotor 51 under the situation of not using the predetermined Mathematical Modeling relevant with the control of fan electromotor 51 rotating speed detects.Therefore, even not starting of fan electromotor 51, prestart rotating speed test section 227 also can detect the rotating speed of fan electromotor 51 reliably.
(2-6) in addition, same in the present embodiment, prestart rotating speed test section 227 does not make electric current flow through the detection of carrying out the rotating speed of prestarting fan electromotor 51 under the situation of fan electromotor 51.Therefore, even not starting of fan electromotor 51, prestart rotating speed test section 227 also can detect the rotating speed of fan electromotor 51 reliably.
(2-7) in addition, same in the present embodiment, even at fan electromotor 51 prestarts of the control of not carrying out inverter 25, prestart rotating speed test section 227 also can detect the rotating speed of fan electromotor 51 reliably.
(2-8) same in the present embodiment, prestart rotating speed test section 27 adopts the simple structure that detects the rotating speed of prestarting fan electromotor 51 according to the induced voltage Vwn that produces at fan electromotor 51.
(2-9) same in the present embodiment, at prestarting fan electromotor 51 because under the state that the influence of wind etc. has been rotated, as long as its rotating speed is more than the desired speed, then the evaporator in the off-premises station 10 14 just has been transferred enough air, so motor drive control device 220 does not make fan electromotor 51 startings.On the contrary, if the not enough desired speed of rotating speed, even then hypothesis fan electromotor 51 rotations, the amount of air that flows to the evaporator 14 in the off-premises station 10 is also not enough, thereby motor drive control device 220 makes fan electromotor 51 startings.Therefore, owing to control the starting execution of fan electromotor 51 according to the rotating speed of prestarting fan electromotor 51, thereby fan electromotor 51 can be started the power consumption that cause and suppress to be Min..And can not reduce the performance of the heat pump assembly that this motor drive control device 220 has been installed.In addition owing to be about to prestarting rotation status and limited, even thereby during the external disturbance such as wind that swept suddenly, current of electric and impose on the increase of the voltage of motor 51 can be not excessive yet, system 300 can not stop owing to overcurrent or overvoltage.
(2-10) switch unit 229a action that signal is switched from from the 1st tach signal FG1 to the 2nd tach signal FG2 is in fan electromotor 51 starting backs and becomes under the situation that can estimate rotor-position by no sensor control circuit 28 and carry out.No sensor control circuit 28 becomes and can estimate rotor-position and mean the rotating speed that can estimate fan electromotor 51 according to the rotor-position that estimated, thereby fan electromotor 51 can drive reliably in the no-rotor position sensor mode.
(2-11) same in the present embodiment, the signal form of preferred the 1st tach signal FG1 is identical with the signal form of the 2nd tach signal FG2.This is because microcomputer 229 does not need to change control mode according to employed tach signal.
(2-12) same in the present embodiment, microcomputer 229 judges that according to the 1st tach signal FG1 and the 2nd tach signal FG2 no sensor control circuit 228 has no abnormal.Therefore, motor drive control device 220 can be carried out the control that the state according to no sensor control circuit 228 stops the starting of fan electromotor 51 immediately, can have the fail safe of height.
(2-13) motor 51 is drive sources of the outdoor fan 15 of one of equipment of comprising in the off-premises station 10 as heat pump assembly.Therefore, even outdoor fan 15 also can easily be grasped the rotating speed of prestarting fan electromotor 51 because the influence of wind etc. has been rotated at prestart, and after starting, can carry out the driving control of high performance fan electromotor 51.
(3) variation
(3-1) variation 2A
In above-mentioned the 2nd execution mode, also can with the variation 1A of above-mentioned the 1st execution mode in the same manner, the electric current that no sensor control circuit 228 makes rotor-position detect usefulness forces to flow through the fan electromotor 51 in the driving, estimated rotor position thus.Also estimated rotor position accurately when using this method.
(3-2) variation 2B
In above-mentioned the 2nd execution mode, also can with the variation 1B of above-mentioned the 1st execution mode in the same manner, prestart rotating speed test section 227 is estimated the rotor-position of prestarting fan electromotor 51, and uses its result to carry out the detection of the rotating speed of prestarting fan electromotor 51.Thus, even at fan electromotor 51 prestarts, prestart rotating speed test section 227 also can detect the rotating speed of fan electromotor 51 reliably.
(3-3) variation 2C
In above-mentioned the 2nd execution mode, also can with the variation 1C of above-mentioned the 1st execution mode in the same manner, the induced voltage that uses when detecting the rotating speed of prestarting fan electromotor 51 is not a phase, but two-phase or whole three-phases.In addition, also can use U mutually or the induced voltage of V phase replaces the induced voltage Vwn of W phase, namely be not limited to the detection mode of above-mentioned the 2nd execution mode.
(3-4) variation 2D
In above-mentioned the 2nd execution mode, with above-mentioned the 1st execution mode in the same manner, but the 1st tach signal FG1 and the 2nd tach signal FG2 have frequency fixing of the pulse signal in the cycle corresponding with the rotating speed of fan electromotor 51 or signal have pulse signal with the corresponding duty ratio of the rotating speed of this fan electromotor 51.In addition, the 1st tach signal FG1 and the 2nd tach signal FG2 also can be the d. c. voltage signals that rotating speed is expressed as magnitude of voltage.
(3-5) variation 2E
The motor drive control device 220 of above-mentioned the 2nd execution mode and the variation 1F of above-mentioned the 1st execution mode also can be applicable to the structure that fan electromotor 51 and electric moto used in compressor 61 are connected in parallel in the same manner.
(3-6) variation 2F
In above-mentioned the 2nd execution mode, show the switching of carrying out the 1st tach signal FG1 and the 2nd tach signal FG2 by microcomputer 229, and the situation of carrying out the control of fan electromotor 51 by this microcomputer 229.But, also can be such structure: will pass to the control unit (not shown microcomputer or control circuit, for example outdoor control part) more upper than this microcomputer 229 as the result of switching tach signal.
(3-7) variation 2G
In addition, in above-mentioned the 2nd execution mode, according to having illustrated after prestart/starting the change action from the 1st tach signal FG1 to the 2nd tach signal FG2, even but after once driving with desired speed, stop to drive and the rotation in moderating process under the situation about resetting, also can be suitable for the change action of the manner certainly.
Embodiments of the present invention and variation thereof below have been described with reference to the accompanying drawings, but concrete structure is not limited to these execution modes and variation thereof, can changes without departing from the spirit and scope of the present invention.
Label declaration
10 off-premises stations; 14 evaporators; 15 outdoor fans; 20 motor drive control device; 21 rectification part; 22 smmothing capacitors; 23 voltage detection departments; 24 current detecting parts; 25 inverters; 26 gate drive circuits; 27 prestart rotating speed test sections; 28 no sensor control circuits; 29 microcomputers; 30 commutation circuits; 51 motors; 100 driving control system for electric machine; 61 electric moto used in compressor.
Technical literature formerly
Patent documentation
Patent documentation 1: Japanese kokai publication hei-No. 337080 communique.

Claims (17)

1. a motor drive control device (20), this motor drive control device (20) has:
Prestart rotating speed test section (27), it detects the rotating speed of prestarting motor (51);
No transducer estimation portion (28), the rotor-position of the described motor after it estimates to start in the no-rotor position sensor mode, and estimate described rotating speed of motor according to the described rotor-position that estimates;
Control part (29), the 2nd tach signal (FG2) of the described rotating speed of motor that it is estimated by described no transducer estimation portion (28) by the 1st tach signal (FG1) of the detected described rotating speed of motor of described prestart rotating speed test section (27) or expression according to expression carries out the control of described motor; And
Commutation circuit (30), it imports the change action of the signal of described control part (29), make that described control part is transfused to described the 1st tach signal (FG1) before described electric motor starting, described control part is transfused to described the 2nd tach signal (FG2) behind described electric motor starting.
2. motor drive control device according to claim 1 (20), wherein,
Described prestart rotating speed test section (27), described no transducer estimation portion (28) and described commutation circuit (30) are encapsulated in the integrated circuit package body.
3. a motor drive control device (220), this motor drive control device (220) has:
Prestart rotating speed test section (227), it detects the rotating speed of prestarting motor (51);
No transducer estimation portion (228), the rotor-position of the described motor after it estimates to start in the no-rotor position sensor mode, and estimate described rotating speed of motor according to the described rotor-position that estimates; And
Control part (229), the 2nd tach signal (FG2) of the described rotating speed of motor that it is estimated by described no transducer estimation portion (228) by the 1st tach signal (FG1) of the detected described rotating speed of motor of described prestart rotating speed test section (227) or expression according to expression, carry out the control of described motor
Described control part (229) has switch unit (229a), this switch unit (229a) carries out the change action of employed signal when the described motor of control, make and before described electric motor starting, control described motor according to described the 1st tach signal (FG1), behind described electric motor starting, control described motor according to described the 2nd tach signal (FG2).
4. according to any described motor drive control device (20,220) in the claim 1～3, wherein,
Described no transducer estimation portion (28,228) uses the predetermined Mathematical Modeling relevant with the control of described motor to estimate described rotor-position.
5. according to any described motor drive control device (20,220) in the claim 1～3, wherein,
Described no transducer estimation portion (28,228) estimates described rotor-position by making electric current flow through described motor.
6. according to any described motor drive control device (20,220) in the claim 1～5, wherein,
Described motor drive control device also has to the inverter of described motor supply capability (25,225),
Described no transducer estimation portion (28,228) only carries out the estimation of described rotor-position when carrying out the control of described inverter.
7. according to any described motor drive control device (20,220) in the claim 1～6, wherein,
Described no transducer estimation portion (28,228) can not estimate prestarting described rotating speed of motor.
8. according to any described motor drive control device (20,220) in the claim 1～7, wherein,
Described prestart rotating speed test section (27,227) carries out prestarting described rotating speed of motor and detects under the situation of not using the predetermined Mathematical Modeling relevant with the control of described motor.
9. according to any described motor drive control device (20,220) in the claim 1～8, wherein,
Described prestart rotating speed test section (27,227) detects electric current being flow through carry out prestarting described rotating speed of motor under the situation of described motor.
10. according to any described motor drive control device (20,220) in the claim 1～9, wherein,
Described motor drive control device also has to the inverter of described motor supply capability (25,225),
Even do not carry out the control of described inverter, described prestart rotating speed test section (27,227) also carries out the detection of prestarting described rotating speed of motor.
11. any described motor drive control device (20,220) according to Claim 8～10, wherein,
Described prestart rotating speed test section (27,227) is estimated prestarting described rotor-position, and uses its result to carry out the detection of prestarting described rotating speed of motor.
12. any described motor drive control device (20,220) according to Claim 8～10, wherein,
Described prestart rotating speed test section (27,227) detects prestarting described rotating speed of motor according to the induced voltage that prestart produces in described motor.
13. according to any described motor drive control device (20,220) in the claim 1～12, wherein,
Described control part (29,229) is under the situation of the not enough desired speed of described the 1st tach signal (FG1), described motor is started in the no-rotor position sensor mode, under described the 1st tach signal (FG1) is situation more than the described desired speed, do not make described electric motor starting.
14. according to any described motor drive control device (20,220) in the claim 1～13, wherein,
Described change action to described the 2nd tach signal (FG2) is to carry out under the situation that can estimate described rotor-position by described no transducer estimation portion to signal from described the 1st tach signal (FG1).
15. according to any described motor drive control device (20,220) in the claim 1～14, wherein,
The signal form of described the 1st tach signal (FG1) is identical with the signal form of described the 2nd tach signal (FG2).
16. according to any described motor drive control device (20,220) in the claim 1～15, wherein,
Described control part (29,229) judges that according to described the 1st tach signal (FG1) and described the 2nd tach signal (FG2) described no transducer estimation portion (28,228) has no abnormal.
17. according to any described motor drive control device (20,220) in the claim 1～16, wherein,
Described motor is the drive source of the fan of one of equipment of comprising in the off-premises station as heat pump assembly.
CN201180066569.2A 2011-02-02 2011-12-16 motor drive control device Expired - Fee Related CN103348582B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2011021162A JP5866763B2 (en) 2011-02-02 2011-02-02 Motor drive control device
JP2011-021162 2011-09-15
PCT/JP2011/079155 WO2012105131A1 (en) 2011-02-02 2011-12-16 Motor drive-control apparatus

Publications (2)

Publication Number Publication Date
CN103348582A true CN103348582A (en) 2013-10-09
CN103348582B CN103348582B (en) 2016-02-10

Family

ID=46602361

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201180066569.2A Expired - Fee Related CN103348582B (en) 2011-02-02 2011-12-16 motor drive control device

Country Status (3)

Country Link
JP (1) JP5866763B2 (en)
CN (1) CN103348582B (en)
WO (1) WO2012105131A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105900330A (en) * 2014-01-10 2016-08-24 大金工业株式会社 Motor control device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5590179B2 (en) * 2012-09-28 2014-09-17 ダイキン工業株式会社 Power consumption reduction device
CN104767438B (en) * 2015-03-24 2018-03-06 苏州佳世达电通有限公司 Motor control method and apply its motor module and heat abstractor
CN107196572B (en) * 2017-07-25 2019-06-11 温州大学 One kind being based on permanent-magnetic synchronous motor rotor initial position detection device and method
FR3135845A1 (en) * 2022-05-18 2023-11-24 Safran Electrical & Power Control device for a three-phase synchronous rotating machine with permanent magnets

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63206189A (en) * 1987-02-19 1988-08-25 Matsushita Electric Ind Co Ltd Protective device of brushless motor
CN1356768A (en) * 2000-11-24 2002-07-03 松下电器产业株式会社 Motor driver
JP2003174794A (en) * 2001-12-04 2003-06-20 Daikin Ind Ltd Method of driving brushless dc motor and its device
JP2003259679A (en) * 2002-02-26 2003-09-12 Toshiba Corp Vector control inverter apparatus and rotation driving apparatus
JP2005137106A (en) * 2003-10-30 2005-05-26 Hitachi Home & Life Solutions Inc Controller for motor
US20090309531A1 (en) * 2006-07-10 2009-12-17 Nachi-Fujikoshi Corp. Servo motor monitoring apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63206189A (en) * 1987-02-19 1988-08-25 Matsushita Electric Ind Co Ltd Protective device of brushless motor
CN1356768A (en) * 2000-11-24 2002-07-03 松下电器产业株式会社 Motor driver
JP2003174794A (en) * 2001-12-04 2003-06-20 Daikin Ind Ltd Method of driving brushless dc motor and its device
JP2003259679A (en) * 2002-02-26 2003-09-12 Toshiba Corp Vector control inverter apparatus and rotation driving apparatus
JP2005137106A (en) * 2003-10-30 2005-05-26 Hitachi Home & Life Solutions Inc Controller for motor
US20090309531A1 (en) * 2006-07-10 2009-12-17 Nachi-Fujikoshi Corp. Servo motor monitoring apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105900330A (en) * 2014-01-10 2016-08-24 大金工业株式会社 Motor control device
US9929682B2 (en) 2014-01-10 2018-03-27 Daikin Industries, Ltd. Motor control device
CN105900330B (en) * 2014-01-10 2019-11-22 大金工业株式会社 Motor control assembly

Also Published As

Publication number Publication date
JP2012161214A (en) 2012-08-23
CN103348582B (en) 2016-02-10
WO2012105131A1 (en) 2012-08-09
JP5866763B2 (en) 2016-02-17

Similar Documents

Publication Publication Date Title
US9444377B2 (en) Motor drive control device
CN102594232B (en) Motor drive control device
JP4894312B2 (en) Inverter device
JP5539928B2 (en) Motor drive device, fan control device and heat pump device using the same
CN103348582B (en) motor drive control device
CN109743001B (en) Direct-current sensorless compressor variable-frequency controller of refrigerator and control method
US9929687B2 (en) Motor control device
CN107979307A (en) The gathering motor drive control of brushless DC motor
CN101272114B (en) Frequency conversion control device of DC motor
AU2015205234B2 (en) Motor control device
CN107834917A (en) The counter electromotive force commutation point detection circuit and method of a kind of DC brushless motor
EP2903150A1 (en) Power consumption reduction device
CN102457225A (en) Refrigerating apparatus and controller for permanent magnet synchronous motor
CN102739131B (en) Motor drive and use the heat pump assembly of this motor drive
JP2012161214A5 (en)
CN102570942B (en) The system and method for for monitoring and controlling brushless motor
JP2014007916A (en) Motor control device
JP2015201905A (en) inverter control device
CN105429526A (en) Monitoring Device For An Electric Machine, Control Device And Method
JP2012161213A (en) Motor driving device
US20230353071A1 (en) Method for controlling a bldc motor and corresponding control circuit
Yang et al. Low cost sensorless vector control for PMSM compressors
CN111130404A (en) Motor control method based on single Hall sensor

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160210

Termination date: 20171216