CN103363620A - Control device and heat pump device - Google Patents
Control device and heat pump device Download PDFInfo
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- CN103363620A CN103363620A CN2013101144744A CN201310114474A CN103363620A CN 103363620 A CN103363620 A CN 103363620A CN 2013101144744 A CN2013101144744 A CN 2013101144744A CN 201310114474 A CN201310114474 A CN 201310114474A CN 103363620 A CN103363620 A CN 103363620A
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Abstract
The invention provides a control device and a heat pump device. The control device has a motor control part which has a control inverter circuit, and can reduce the number of detection devices which are used for detecting overvoltage or undervoltage. An air-conditioning device includes an outdoor fan motor (38a) which provides driving electric power through an inverter circuit (38b). The motor control part (74) controls the outdoor fan motor (38a). A main body control part (75) that is connected with the motor control part (74) is used for controlling the air-conditioning device. When the direct-current bus voltage (Vdc) of the motor control part (74) in the inverter circuit (38b) satisfies conditions of the overvoltage or the undervoltage and also satisfies a condition that the control state of the outdoor fan motor (38a) is a state before operation is satisfied, commercial power lines (48a, 48b) which are connected with the inverter circuit (38b) are determined to have generated overvoltage or undervoltage.
Description
Technical field
The present invention relates to comprise the control device of electric device of motor and the heat pump assembly that comprises fan electromotor.
Background technology
In heat pump assembly, such as in fan electromotor etc., the increase in demand of the efficient and brshless DC motor that long life, electrical noise and mechanical noise are less.The polyphase machines such as this brshless DC motor provide electric power to drive from the inverter circuit of high energy efficiency usually.
In this heat pump assembly with inverter circuit; for example; such as patent documentation 1(Japanese kokai publication hei 5-114473 communique) the record, it is to be undertaken by circuit for controlling motor and the overvoltage detection circuit that inverter circuit is controlled that the protection inverter circuit is avoided overvoltage.In order to protect inverter circuit to avoid overvoltage, overvoltage detection circuit detects the overvoltage condition of inverter circuit, and circuit for controlling motor stops the action of inverter circuit according to the detection of the overvoltage condition of overvoltage detection circuit.
In addition, in heat pump assembly, except the inverter circuit and circuit for controlling motor of fan electromotor, also be provided with actuator and the control device of accepting the laggard action work of supply of electric power from AC power, this AC power is used for providing electric power to inverter circuit.In order to protect this actuator and control device; except the overvoltage detection circuit that the inverter circuit of fan electromotor is used; be provided with separately other testing circuits for detection of overvoltage or the under-voltage of actuator and control device, can prevent actuator and control device owing to overvoltage or under-voltage breaks down or the problem that can't normally move.
But; when thereby the testing circuit that is provided for detecting overvoltage or under-voltage according to each object of protection as described above carries out control for overvoltage or under-voltage; the quantity of testing circuit increases, and the device price of object that becomes control device control is more expensive.
Summary of the invention
Problem of the present invention is to provide a kind of control device, and it has the motor controling part for the control inverter circuit, can subdue the number for detection of the checkout gear of overvoltage or under-voltage.
The control device of the 1st aspect of the present invention is the control device of electric device, this electric device comprises by inverter circuit provides the motor that drives electric power, described control device has: motor controling part, it is used for the control motor: and main body control section, it is connected with motor controling part, be used for the control electric device, when the state of a control that at least one party in motor controling part and the main body control section satisfies the condition of overvoltage or under-voltage and motor at the dc bus voltage of inverter circuit also satisfies predetermined condition, be judged as in the commercial power line that is connected with inverter circuit and produced electric voltage exception.
Control device according to the 1st aspect, because by in the detection of the overvoltage of dc bus voltage or under-voltage, adding the predetermined condition of the state of a control of motor, thereby, at least one party in motor controling part and the main body control section can be judged the electric voltage exception of commercial power line, therefore, can save checkout gear for detection of overvoltage or the under-voltage of commercial power line.
The control device of the 2nd aspect of the present invention in the control device aspect the 1st, when motor controling part has produced electric voltage exception in being judged as commercial power line, represents the signal of the electric voltage exception of commercial power line to the output of main body control section.
Control device according to the 2nd aspect, if main body control section was from for detection of the signal that receives the expression abnormity of power supply the checkout gear of overvoltage or under-voltage in the past, thereby then become and in the past identical structure by the signal that makes main body control section from motor controling part, receive the expression abnormity of power supply, and can not change the structure of main body control section, and reduce the number for detection of the checkout gear of overvoltage or under-voltage.
The control device of the 3rd aspect of the present invention, in the control device aspect the 1st, motor controling part sends the voltage signal relevant with dc bus voltage to main body control section, and the generation of the electric voltage exception of commercial power line is judged by main body control section according to the voltage signal relevant with dc bus voltage.
Control device according to the 3rd aspect, main body control section is in order to judge electric voltage exception, only by from motor controling part receiver voltage signal just can, therefore, can not increase the number of terminals of main body control section, and reduce the number for detection of the checkout gear of overvoltage or under-voltage.
The control device of the 4th aspect of the present invention, in the control device of any one party face aspect the 1st to the 3rd aspect, predetermined condition referred to before drive motors, or made a comment or criticism and make motor become the control of halted state.
According to the control device of the 4th aspect and since predetermined condition be motor is driven before, perhaps making motor is the control of halted state, therefore, does not have drive motors to become for judging that the condition of electric voltage exception has occured commercial power line.By formation like this, can not be subjected to owing to motor being driven under the state of the impact that brings the electric voltage exception of commercial power line to be judged at dc bus voltage.
The control device of the 5th aspect of the present invention, in the control device of any one party face aspect the 1st to the 4th aspect, control device also has the dc bus that is connected with inverter circuit and commercial power line, when at least one party in motor controling part and the main body control section has produced electric voltage exception in being judged as commercial power line, cut off being connected between commercial power line and the dc bus.
According to the control device of the 5th aspect, being connected between the commercial power line that has produced electric voltage exception by cut-out and the dc bus, and from commercial power line, cut off dc bus, thereby, can prevent that the impact of commercial power line from involving inverter circuit.
The control device of the 6th aspect of the present invention, in the control device of any one party face aspect the 1st to the 5th aspect, main body control section only judges whether produced electric voltage exception in the commercial power line according to the information of the dc bus voltage of inverter circuit.
According to the control device of the 6th aspect, receive the information of dc bus voltage owing to be main body control section only from motor controling part, therefore, can save input for detection of terminal and the line of the main body control section of the information of electric voltage exception.
The control device of the 7th aspect of the present invention; in the control device of any one party face aspect the 1st to the 6th aspect; whether at least one party and dc bus voltage in motor controling part and the main body control section compare and inverter circuit are protected according to the 1st threshold decision; and, compare with dc bus voltage and according to the electric voltage exception of the 2nd threshold decision commercial power line.
According to the control device of the 7th aspect, by divide for detection of threshold value, thereby, can determine unusual kind.For example, by having the 2nd threshold value for the electric voltage exception of judging commercial power line, thereby, the 2nd threshold value can be used for only the electric voltage exception of commercial power line being judged.
The heat pump assembly of the 8th aspect of the present invention, it is connected with commercial power line, and this heat pump assembly has: fan electromotor, it is for generation of the air stream that carries out heat exchange with cold-producing medium; Inverter circuit, it is connected with commercial power line for driving electric power is provided to fan electromotor; Voltage detection department, it detects the dc bus voltage of inverter circuit and carries out unusual detection; Motor controling part, it is connected with inverter circuit and voltage detection department, is used for the control fan electromotor; And main body control section, it is connected with motor controling part, is used for the control heat pump assembly; Wherein, when the state of a control that at least one party in motor controling part and the main body control section satisfies the condition of overvoltage or under-voltage and fan electromotor at the dc bus voltage of inverter circuit also satisfies predetermined condition, be judged as and produced electric voltage exception in the commercial power line.
Heat pump assembly according to the 8th aspect, because by in the detection of the overvoltage of dc bus voltage or under-voltage, adding the predetermined condition of the state of a control of fan electromotor, thereby, at least one party in control of Fan Motor section and the main body control section can be judged the electric voltage exception of commercial power line, therefore, can save the checkout gear that overvoltage or under-voltage detect that is used for for detection of the electric voltage exception of commercial power line.
The heat pump assembly of the 9th aspect of the present invention, in the heat pump assembly aspect the 8th, heat pump assembly also has the actuator beyond the fan electromotor, the driven by power that this actuator is provided from commercial power line, main body control section is in order to judge whether produced the information of unusually using the dc bus voltage of inverter circuit in the actuator.
Heat pump assembly according to the 9th aspect, owing in carrying out actuator, whether produce the information of using the dc bus voltage of inverter circuit in the unusual judgement, therefore, information for the information that whether produces among the required information of unusual judgement in the actuator, can obtain according to the dc bus voltage from inverter circuit is confirmed does not need the checkout gear for this information of acquisition.
By the control device of the 1st aspect of the present invention, can in the control object of main body control section, reduce the number for the checkout gear of the detection of carrying out overvoltage or under-voltage.
By the control device of the 2nd aspect of the present invention, can not carry out the change of the structure of main body control section, the rising of cost that can the inhibitory control device.
By the control device of the 3rd aspect of the present invention, can suppress the increase of the number of terminals of main body control section, and the rising of cost that can the inhibitory control device.
By the control device of the 4th aspect of the present invention, owing to can get rid of the impact that the driving of motor brings, therefore, can improve the Accuracy of Judgement of the electric voltage exception of commercial power line.
By the control device of the 5th aspect of the present invention, can prevent the situation that the electric voltage exception owing to commercial power line breaks down inverter circuit.
By the control device of the 6th aspect of the present invention, can simplify the structure of main body control section, and can subdue the cost of control device.
By the control device of the 7th aspect of the present invention, can improve the Accuracy of Judgement to the electric voltage exception of commercial power line.
By the heat pump assembly of the 8th aspect of the present invention, can reduce the number for the checkout gear of the detection of carrying out overvoltage or under-voltage in the control object of main body control section.
Heat pump assembly by the 9th aspect of the present invention, in the control object of main body control section, can simplify or subdue following device: that the information that be used for to obtain to obtain according to the dc bus voltage from inverter circuit is confirmed and carry out inverter circuit and whether produce the required information of unusual judgement.
Description of drawings
Fig. 1 is the stereogram of outward appearance that the air attemperation apparatus of an embodiment is shown.
Fig. 2 illustrates the refrigerant lines of air attemperation apparatus and the circuit diagram of summary of periphery thereof.
Fig. 3 is the in-built stereogram for the explanation off-premises station.
Fig. 4 is the block diagram of summary that the control system of control part is shown.
Fig. 5 is the circuit diagram that an example of outdoor fan motor section and power supply and peripheral circuit is shown.
Fig. 6 is the block diagram for the function of explanation motor controling part and main body control section.
Fig. 7 illustrates abnormality detection and the flow chart of an example of the step of control when unusual.
Fig. 8 illustrates abnormality detection and the flow chart of other examples of the step of control when unusual.
Fig. 9 is the circuit diagram that other examples of outdoor fan motor section and power supply and peripheral circuit are shown.
Figure 10 is the block diagram that other examples of the off-premises station that comprises motor controling part and main body control section are shown.
Figure 11 is the block diagram that other examples of the air attemperation apparatus that comprises motor controling part and main body control section are shown.
Label declaration
10,10A: air attemperation apparatus; 14: refrigerant lines; 20,20A: indoor set; 30,30A: off-premises station; 31: compressor; 37: propeller fan; 38: outdoor fan motor section; 38a: outdoor fan motor; 38b: inverter circuit; 48: commercial ac power source; 48a, 48b: commercial power line; 50: control device; 60: indoor control part; 70: outdoor control part; 64,74: motor controling part; 65,75: main body control section; 81,81A: voltage detection department.
The specific embodiment
Below, for electric device of the present invention, describe as an example of the heat pump type air attemperation apparatus example.This heat pump type air attemperation apparatus has outdoor fan motor section, comprises brshless DC motor (below, be called brushless DC motor) in this outdoor fan motor section.In addition, this heat pump type air attemperation apparatus main body control section of in control device 50, comprising motor controling part that outdoor fan motor section is controlled and being used for controlling installing off-premises station 30 especially.
(1) summary of heat pump type air attemperation apparatus
(1-1) summary of the structure of air attemperation apparatus
Fig. 1 is the stereogram of the outward appearance of heat pump type air attemperation apparatus that an embodiment of the invention are shown (below, be called air attemperation apparatus).The air attemperation apparatus 10 of Fig. 1 has indoor set 20 and off-premises station 30.Off-premises station 30 by refrigerant tubing be arranged at indoor indoor set 20 and be connected, consist of the refrigerant lines of air attemperation apparatus 10 with indoor set 20.Therefore, the connecting pipe 12 by refrigerant tubing, order wire and transmission lines etc. are passed through connects indoor set 20 and off-premises station 30.
Fig. 2 is the circuit diagram of summary of structure that the air attemperation apparatus 10 of Fig. 1 is shown.In Fig. 2, the solid line that connects each device represents refrigerant tubing, and the dotted line that connects each device represents the signal transmission line road.In order to consist of refrigerant lines shown in Figure 2 14, be provided with indoor heat converter 21 etc. in the indoor set 20, be provided with compressor 31, No. four transfer valves 32, outdoor heat converter 33, motor-driven valve 34 and accumulator 35 etc. in the off-premises station 30.
Herein, the circuit structure of refrigerant lines 14 illustrated simply.The 1st port of No. four transfer valves 32 is connected with the ejection side of compressor 31.A gateway of outdoor heat converter 33 is connected with the 2nd port of No. four transfer valves 32, and accumulator 35 is connected with the 3rd port, and cold-producing medium connecting pipe 12b is connected with the 4th port.No. four transfer valves 32 shown in solid line, connect the 1st port and the 2nd port, and connect the 3rd port and the 4th port when refrigeration.No. four transfer valves 32 shown in solid line, connect the 1st port and the 2nd port, and connect the 3rd port and the 4th port when refrigeration.On the other hand, when heating, No. four transfer valves 32 are shown in dotted line, connect the 1st port and the 4th port, and connect the 2nd port and the 3rd port.Another gateway of outdoor heat converter 33 is connected with a gateway of indoor heat converter 21 with cold-producing medium connecting pipe 12a via motor-driven valve 34.Another gateway of indoor heat converter 21 is connected with the 4th port of No. four transfer valves 32 via cold-producing medium connecting pipe 12b.In addition, the suction side of compressor 31 is connected via the 3rd port of accumulator 35 with No. four transfer valves 32.Cold-producing medium circulates in this refrigerant lines 14.
(1-2) summary of the action of air attemperation apparatus
During refrigeration, No. four transfer valves 32 switch to the connection of solid line, are sent to outdoor heat converter 33 by the cold-producing medium that sprays after compressor 31 compressions via No. four transfer valves 32.During refrigeration, outdoor heat converter 33 plays a role as condensed device, thereby is sent to motor-driven valve 34 by the condensing cold-producing medium that carries out removing with the heat exchange of extraneous gas heat.Motor-driven valve 34 plays a role as expansion valve, and the aqueous cold-producing medium of high pressure becomes the state of the moist steam of low pressure.The cold-producing medium that so expands by motor-driven valve 34 enters indoor heat exchanger 21 by cold-producing medium connecting pipe 12a is laggard.During refrigeration, indoor heat converter 21 plays a role as evaporimeter, by evaporation, between room air and refrigerated medium, carry out heat exchange, remove temperature rises after the heat of room air cold-producing medium and be sent to No. four transfer valves 32 after by cold-producing medium connecting pipe 12a.No. four transfer valves 32 are switched so that cold-producing medium connecting pipe 12a is connected with accumulator 35.Therefore, the cold-producing medium of sending from indoor heat converter 21 is sent to the accumulator 35 that is connected with the suction side of compressor 31 by No. four transfer valves 32.
When heating, No. four transfer valves 32 switch to the connection of dotted line, are sent to the indoor heat converter 21 that plays a role as condensed device by the cold-producing medium that sprays after compressor 31 compressions via cold-producing medium connecting pipe 12b from No. four transfer valves 32.And the circuit along opposite with when refrigeration is sent to compressor 31 from outdoor heat converter 33 cold-producing medium out that plays a role as evaporimeter.That is, cold-producing medium circulates the path of returning compressor 31 from compressor 31 after successively through No. four transfer valves 32, cold-producing medium connecting pipe 12b, indoor heat converter 21, cold-producing medium connecting pipe 12a, motor-driven valve 34, outdoor heat converter 33, No. four transfer valves 32, accumulator 35.
In order to promote the heat exchange in indoor heat converter 21 and the outdoor heat converter 33, be provided with in indoor set 20 and the off-premises station 30 room air is sent to the indoor fan 22 of indoor heat converter 21 and the propeller fan 37 that extraneous gas is sent to outdoor heat converter 33.And the indoor fan motor section 23 and the outdoor fan motor section 38 that are used for these indoor fans 22 of driving and propeller fan 37 are arranged at respectively indoor set 20 and off-premises station 30.
(1-3) structure of off-premises station
As shown in Figure 1, off-premises station 30 is roughly rectangular-shaped shape, covers by housing 15.Front surface at housing 15 disposes header board assembly 16, is provided with fan blow-off outlet 17 in the substantial middle section of header board assembly 16.
Fig. 3 illustrates the off-premises station 30 that takes off the state behind the housing 15.From a side, the back side to one of housing 15, outdoor heat converter 33 exposes.Propeller fan 37 is disposed at the positive rear side of fan blow-off outlet 17, and the outdoor fan motor section 38 that is used for driving propeller fan 37 is disposed at the positive rear side of propeller fan 37.And the extraneous gas that sucks from the back side of housing 15 and side blows out from the fan blow-off outlet 17 of the front surface of housing 15 after by outdoor heat converter 33.
Drive propeller fan 37 by outdoor fan motor 38a, and in the counterclockwise direction (direction of CCW) rotation of propeller fan 37, thereby the air-flow that blows out from fan blow-off outlet 17 produced.Even if when not driving propeller fan 37 by outdoor fan motor section 38, sometimes also can be created in External Force Acting that the outer gas stream of outdoor generation brings makes propeller fan 37 rotations behind propeller fan 37 torque.For example, when outer gas stream when 33 direction is passed from fan blow-off outlet 17 along outdoor heat converter, because this outer gas stream and the torque that produces in propeller fan 37 makes along clockwise direction (direction of CW) rotation of propeller fan 37.
(2) control system
(2-1) summary of control system
For correctly and efficiently carry out in the air attemperation apparatus 10 air adjustment and action, indoor set 20 and off-premises station 30 are by 70 controls of the indoor control part 60 in the equipment that is assembled into separately and outdoor control part.Fig. 4 is the block diagram of summary that the structure of control system is shown.Indoor control part 60 and outdoor control part 70 interconnect via order wire 12c, and mutually carry out the transmitting-receiving of data, consist of a control device 50.Control device 50 comprises CPU(central operation treating apparatus), the formation such as memory and peripheral circuit, thereby and these circuit are made up realize control function described later.
Be provided with outdoor heat converter temperature sensor 41, heat exchanger gateway temperature sensor 42, suction side temperature sensor 43, ejection side temperature sensor 44 and extraneous gas temperature sensor 45 etc. in the off-premises station 30 as the temperature sensor of the temperature of each one that is used for measuring off-premises station 30, the value of the temperature that determines by these temperature sensors 41～45 is sent to outdoor control part 70.By outdoor heat converter temperature sensor 41, the temperature of the cold-producing medium of the inside of measuring chamber outer heat-exchanger 33.The heat exchanger gateway temperature sensor 42 of the gateway by being arranged at outdoor heat converter 33 is measured the temperature that flows through the cold-producing medium between outdoor heat converter 33 and the indoor set 20.By suction side temperature sensor 43, measure the temperature of the cold-producing medium that is drawn into compressor 31.By ejection side temperature sensor 44, measure from the temperature of the cold-producing medium of compressor 31 ejections.By extraneous gas temperature sensor 45, measure the extraneous gas temperature on every side of off-premises station 30.
Be provided with in the off-premises station 30 for measurement be drawn into compressor 31 cold-producing medium pressure suction side pressure sensor 46 and be used for to measure from the ejection side pressure sensor 47 equal pressure sensors of the pressure of the cold-producing medium of compressor 31 ejections.The value of the pressure of the cold-producing medium of measuring by suction side pressure sensor 46 and ejection side pressure sensor 47 etc. is sent to outdoor control part 70.
And in off-premises station 30, the compressor electric motor section 40 of compressor 31, No. four transfer valves 32, motor-driven valve 34 and outdoor fan motor section 38 are connected with outdoor control part 70.By this outdoor control part 70, the rotating speed of control compressor electric motor section 40 and outdoor fan motor section 38 and their running/stop, controlling the switching of No. four transfer valves 32, and the aperture of control motor-driven valve 34.
Be provided with hydraulic fluid side temperature sensor 24 and gas side temperature sensor 25 for the temperature of the cold-producing medium of the gateway of measuring indoor heat converter 21 in the indoor set 20, and be provided with the indoor temperature transmitter 26 for the temperature in the measuring chamber.The signal of the value of the temperature that expression is measured by these temperature sensors 24～26 is sent to indoor control part 60.In addition, in indoor set 20, the indoor fan motor section 23 of indoor fan 22, wind direction governor motion 27 and display part 28 etc. are connected with indoor control part 60.By this indoor control part 60, the rotating speed of control room internal fan motor section 23 and rotation/stop.Wind direction governor motion 27 is arranged at the angle of the shutter board (omit diagram) of indoor set 20 etc. by change, thereby, regulate be blown out to indoor wind towards.Indoor control part 60 is exported in order to carry out various demonstrations to the control signal of display part 28 indicated numbers.For example, be accompanied by the unusual generation in the outdoor fan motor described later section 38, control device 50 also can make display part 28 carry out the demonstration of abnormal alarm.
(2-2) structure of outdoor fan motor section and periphery thereof
Fig. 5 illustrates the structure of outdoor fan motor section and motor controling part and their periphery.Provide electric power from commercial AC power 48 to outdoor fan motor section 38.The commercial power line 48a of commercial ac power source 48,48b are connected with rectification circuit 49B.The smmothing capacitor 496 that rectification circuit 49B has the rectification part 495 that is made of diode and connects between the dc bus 499 of the dc bus 498 of high-voltage side and low voltage side.The dc bus voltage that carries out rectification by rectification circuit 49B offers outdoor fan motor section 38 by dc bus 498,499.
The 38a of outdoor fan motor section of outdoor fan motor section 38 shown in Figure 5 is brushless DC motors.Driving voltage Vu, the Vv of this outdoor fan motor 38a, Vw are from inverter circuit 38b output, and this inverter circuit 38b accepts the supply of dc bus voltage from dc bus 498,499.Outdoor fan motor 38a has rotor 381, stator 382 and three Hall element 54a, 54b, 54c.
This inverter circuit 38b is conducting state by transistor Q1, Q2, the Q3 that makes upper arm, thereby via each transistor Q1, Q2, Q3, the other end from the dc bus 498 of high-voltage side to armature coil Lu, Lv, Lw applies high voltage.In addition, this inverter circuit 38b is conducting state by transistor Q4, Q5, the Q6 that makes underarm, thereby via each transistor Q4, Q5, Q6, the other end from the dc bus 499 of low voltage side to armature coil Lu, Lv, Lw applies low-voltage.
Be provided with voltage detection department 81 and current detecting part 82 in the outdoor fan motor section 38.By the voltage detection department 81 that between dc bus 498,499, connects, detect the overvoltage between the dc bus 498,499.This voltage detection department 81 for example consists of by a plurality of testing circuits are set, and this testing circuit is included between the dc bus 498,499 a plurality of resistance of connecting and for detection of the transistor of the voltage that is applied to one of them resistance.By taking this structure, can utilize the signal that is provided by motor controling part 74, from detect superpotential a plurality of testing circuit according to different threshold voltages among, select suitable testing circuit.Thus, voltage detection department 81 can be to switching for detection of superpotential threshold voltage to the detection of motor controling part 74 output over-voltages the time.
In addition, be inserted into the current detecting part 82 of the dc bus 499 of low voltage side by series connection, detect the overcurrent that flow into outdoor fan motor section 38.Current detecting part 82 for example is made of testing circuit, and this testing circuit comprises: be inserted into dc bus 499 shunt resistance, comprise the amplifying circuit of the operational amplifier that the voltage to the two ends of shunt resistance amplifies and for detection of the transistor of the output voltage of amplifying circuit.
In addition, be provided with discharge part 497 in the outdoor fan motor section 38, control by outdoor control part 70.Carry out the discharge of smmothing capacitor 496 by this discharge part 497, and the voltage between the dc bus 499 of the dc bus 498 of adjustment high-voltage side and low-pressure side.
(2-3) control of inverter circuit
The motor controling part 74 that is used for control room external fan motor section 38 comprises grid-control voltage generating unit 741, PWM(Pulse-Width Modulation: pulse width modulation) control part 742, direction of rotation test section 743, rotating speed instrumentation section 744, control of discharge section 746 and overcurrent protection section 747.
(grid-control voltage generating unit)
Grid-control voltage generating unit 741 is exported 6 grid-control voltage Gu, Gv, Gw, Gx, Gy, the Gz of the conduction and cut-off of the transistor Q1～Q6 that is used for control inverter circuit 38b as shown in Figure 5.By grid-control voltage Gu, Gv, Gw, Gx, Gy, the Gz from 741 outputs of grid-control voltage generating unit, driving voltage Vu, Vv, the Vw corresponding with the pwm control signal v_duty that exports from PWM control part 742 output to outdoor fan motor 38a by the timing based on rotor-position from inverter circuit 38b.
(PWM control part)
(direction of rotation test section)
Direction of rotation test section 743 adopts from position detection signal Hu, Hv, the Hw of each Hall element 54a～54c output, the direction of rotation of the rotor 381 among the outdoor fan motor 38a (below, sometimes also be recited as the direction of rotation of outdoor fan motor 38a) is detected.Direction of rotation by direction of rotation test section 743 detected outdoor fan motor 38a is input to PWM control part 742.
(rotating speed instrumentation section)
Rotating speed instrumentation section 744 adopts from position detection signal Hu, Hv, the Hw of each Hall element 54a～54c output, and the rotating speed of the rotor 381 among the outdoor fan motor 38a (below, sometimes also be recited as the rotating speed of outdoor fan motor 38a) is carried out instrumentation.The rotating speed of the outdoor fan motor 38a that measures is input to PWM control part 742.
(control of discharge section)
746 controlled discharge sections 497 of control of discharge section.Particularly, control of discharge section 746 is being surpassed in the situation of the 1st upper limit threshold voltage by voltage detection department 81 detected dc bus voltage Vdc, and controlled discharge section 497 is so that store at least a portion discharge of the electric charge of smmothing capacitor 496 into.For example, control of discharge section 746 determines the time that discharge part 497 discharges according to the quantity of electric charge of the definite discharge of difference of the 1st upper limit threshold voltage and dc bus voltage Vdc according to the quantity of electric charge of determining.Herein, the 1st upper limit threshold voltage is determined by the specified of each transistor Q1～Q6 in the inverter circuit 38b etc.
Boost when surpassing the 1st upper limit threshold voltage when detect dc bus voltage Vdc by voltage detection department 81,746 notices surpass the situation of the 1st upper limit threshold voltage from voltage detection department 81 to control of discharge section, and control of discharge section 746 discharges discharge part 497.So, reduce owing to store the quantity of electric charge of smmothing capacitor 496 into, therefore, dc bus voltage Vdc is suppressed to below each transistor Q1～Q6 in the inverter circuit 38b specified.Thus, control of discharge section 746 is according to the adjustment of the voltage at the two ends of being carried out smmothing capacitor 496 by voltage detection department 81 detected voltages, might surpass at dc bus voltage Vdc in the situation of rated voltage of each transistor Q1～Q6 of inverter circuit 38b, control so that dc bus voltage Vdc is converged in below the rated voltage.
(overcurrent protection section)
(2-4) motor controling part and main body control section
Except motor controling part 74, also comprise in the outdoor control part 70 for the compressor electric motor control part 76 of control compressor electric motor section 40 and the 75(of main body control section that is used for control compressor electric motor control part 76 and above-mentioned No. four transfer valves 32 and motor-driven valve 34 etc. with reference to figure 5 and Fig. 6).Between main body control section 75 and motor controling part 74, control the exchange of required information.According to various conditions such as the design temperature that heats and freeze and environment temperatures, by the rotating speed of target of the 75 calculating outdoor fan motor 38a of main body control section, 74 outputs are used to indicate the rotary speed instruction signal rd of the rotating speed of outdoor fan motor 38a from main body control section 75 to motor controling part.
The signal rm of the rotating speed that on the other hand, 75 output expressions measure by rotating speed instrumentation section 744 from motor controling part 74 to main body control section.In addition, unusual electric voltage exception signal Varm1, the Varm2 of 75 output expression dc bus voltage Vdc from motor controling part 74 to main body control section.
(3) each one to off-premises station provides electric power
Off-premises station 30 is connected with commercial ac power source 48 as shown in Figure 6, provides electric power by commercial power line 48a, 48b to No. four transfer valves 32, motor-driven valve 34, rectification circuit 49A, 49B and control power supply 71 etc.The smmothing capacitor 492 that rectification circuit 49A has the rectification part 491 that is made of diode and connects between the dc bus 494 of the dc bus 493 of high-voltage side and low voltage side.Compressor electric motor section 40 is connected with the dc bus 493,494 of rectification circuit 49A.Compressor electric motor section 40 has compressor electric motor 40a and inverter circuit 40b.Control power supply 71 is power supplys of outdoor control part 70.
(4) electric voltage exception of electronic control part and main body control section detects
The electric voltage exception of following in the flowchart text motor controling part 74 of Fig. 7 detects.Motor controling part 74 constitutes to the running of control device 50 indication air attemperation apparatus 10 and transmits the running commencing signal that turns round when beginning.Motor controling part 74 at first 74 has transmitted the running commencing signal according to whether from main body control section 75 to motor controling part, whether has begun the judgement (step S1) of running.
If not yet receive the indication of running beginning, then motor controling part 74 is judged as the control that outdoor fan motor section 38 makes outdoor fan motor 38a rotation,, drives control (being the control of halted state) that is.At this moment, also outdoor fan motor 38a is rotating owing to flow of outside air sometimes, but, herein, the prerequisite that outdoor fan motor 38a does not rotate owing to make the control of outdoor fan motor 38a rotation is set, and motor controling part 74 carries out the detection (step S2) of the electric voltage exception of following commercial ac power source 48.
At this moment, motor controling part 74 is judged as from commercial power line 48a, 48b overvoltage (step S3) is provided when detecting dc bus voltage Vdc above the 1st upper limit threshold voltage by voltage detection department 81.Even if motor controling part 74 dc bus voltage Vdc surpass the control that the 1st upper limit threshold voltage does not make control of discharge section 746 carry out for discharge part 497 yet, but from control of discharge section 746 to main body control section 75 output voltage abnormal signal Varm2(step S4).
Main body control section 75 opens electromagnetic contactor 90 when receiving electric voltage exception signal Varm2, from commercial power line 48a, 48b cutting current circuit 49B(step S5).In addition, main body control section 75 for example sends among expression commercial power line 48a, the 48b to indoor control part 60 and has produced unusual abnormality alarm signal when receiving electric voltage exception signal Varm2.The indoor control part 60 that receives the abnormality alarm signal shows among commercial power line 48a, the 48b display part 28 of indoor set 20 and has produced unusual situation (step S6).The end of the processing by this step 6, a series of processing from step S1 to step S6 before the running beginning finishes.
If when in step S1, being judged as running and having begun, same, carry out the unusual detection of overvoltage of outdoor fan motor section 38 by the processing of step S8～step S11, until receive the indication (step S7) that running finishes.At first, be judged as in step S1 that running has begun and yes when entering step S7 accepts the situation of the indication that running finishes, therefore enter step S8, motor controling part 74 is same, carries out the unusual detection of outdoor fan motor section 38 according to common dc bus voltage Vdc.
At this moment, motor controling part 74 is judged as and has produced overvoltage (step S9) in the dc bus 498,499 of outdoor fan motor section 38 when detecting dc bus voltage Vdc above the 1st upper limit threshold voltage by voltage detection department 81.Because it is unusual to confirm not produce overvoltage among commercial power line 48a, the 48b before the running beginning through step S1～S6, therefore, detect when having produced overvoltage by step S7, can in motor controling part 74, be judged as owing to the action of outdoor fan motor section 38 or outdoor fan motor section (inverter circuit and motor) thus the fault problem that produces boost action etc. produced overvoltage.In other words, can distinguish power supply unusual and fan electromotor section unusually.
When motor controling part 74 detects dc bus voltage Vdc above the 1st upper limit threshold voltage in step S9, and in step S11, carry out the control of the discharge part 497 that undertaken by control of discharge section 746 the 75 output voltage abnormal signal Varm1(step S10 from control of discharge section 746 to main body control section).
Main body control section 75 for example sends in the expression outdoor fan motor section 38 and has produced unusual abnormality alarm signal when receiving electric voltage exception signal Varm1.The indoor control part 60 that receives the abnormality alarm signal makes in the display part 28 display room external fan motor section 38 of indoor set 20 and has produced unusual situation (step S12), in addition, returns step S7.
Although receive in the control of main body control section 75 of electric voltage exception signal Varm1 and have various controls, but, for example, also can constitute when also continuing to be received during electric voltage exception signal Varm1 process is predefined, main body control section 75 sends the indication that running finishes.If the indication that exists running to finish, then motor controling part 74 identifies and has the indication that running finishes and finish a series of processing from step S1 to step S11 in step S7.
(5) variation
（5-1）
In the above-described embodiment, use the 1st upper limit threshold voltage to judge (step S3) in commercial power line 48a, 48b, whether having produced overvoltage by voltage detection department 81, and also adopt the 1st identical upper limit threshold voltage to carry out dc bus voltage Vdc whether to become superpotential judgement (step S9).
But, also can judge that the superpotential threshold voltage of commercial power line 48a, 48b is made as different values with the superpotential threshold voltage that is used for judgement dc bus voltage Vdc with being used for.For example, also can in step S9, judge dc bus voltage Vdc according to the 1st upper limit threshold voltage, in step S3, judge the state of commercial power line 48a, 48b according to the 2nd upper limit threshold voltage that is higher than the 1st upper limit threshold voltage.That is, also can constitute, in step S9, detect in the situation of the voltage that is higher than the 2nd upper limit threshold voltage at voltage detection department 81, make motor controling part 74 to the 75 output voltage abnormal signal Varm2 of main body control section.On the contrary, the 2nd threshold voltage as the state that is used for judgement commercial power line 48a, 48b also can use the voltage that is lower than the 1st upper limit threshold voltage, and whether the 1st upper limit threshold voltage is used for carrying out dc bus voltage Vdc becomes superpotential judgement.
（5-2）
In the above-described embodiment, in step S3, detect whether surpass the 1st upper limit threshold voltage by voltage detection department 81, thereby, judge in commercial power line 48a, 48b, whether having produced overvoltage.But the judgement that motor controling part 74 is carried out also is not limited to superpotential judgement.
In step S2, also can constitute and make 81 couples of dc bus voltage Vdc of voltage detection department whether be lower than the 1st lower threshold voltage (the＜the 1 upper limit threshold voltage) to detect.And, in step S3, being lower than at dc bus voltage Vdc in the situation of the 1st lower threshold voltage, motor controling part 74 is judged as commercial power line 48a, 48b becomes under-voltage.At this moment, the 75 outputs electric voltage exception signal different from above-mentioned electric voltage exception signal Varm1, Varm2 from motor controling part 74 to main body control section, the situation that commercial power line 48a, 48b become under-voltage that detects can be known in main body control section 75.
In the situation of under-voltage, different from superpotential situation, the destroyed possibility such as the inverter circuit 38b of outdoor fan motor section 38 is less, therefore, also can save the cut-out of the commercial ac power source of step S5 and process.
Main body control section 75 for example sends among expression commercial power line 48a, the 48b to indoor control part 60 and has produced unusual abnormality alarm signal when the electric voltage exception signal of the generation that receives this under-voltage of expression.The indoor control part 60 that receives the abnormality alarm signal shows among commercial power line 48a, the 48b display part 28 of indoor set 20 and has produced unusual situation (step S6).
（5-3）
In above-mentioned embodiment and above-mentioned variation 5-1 and 5-2, in step S1, according to having or not that 74 the running from main body control section 75 to motor controling part begins to indicate, judge whether outdoor fan motor section 38 has carried out making the control of outdoor fan motor 38a rotation.
But, whether outdoor fan motor section 38 has been carried out making outdoor fan motor 38a rotation control judgement also can by running begin to indicate have or not beyond judge.
For example, can be according to rotating speed and the rotary speed instruction signal rd of rotating speed instrumentation section 744 instrumentations, be that the control of halted state is judged to making motor.Namely, if the not enough desired speed of the signal rm of the rotating speed that expression measures and rotary speed instruction signal rd (for example, not enough 100rpm) continued the scheduled period during, then being judged as and making motor is the control of halted state, if more than desired speed, then being judged as and not making motor is the control of halted state.Namely, also can constitute, if the dc bus voltage Vdc that detects by voltage detection department 81 during the not enough desired speed of the signal rm of the rotating speed that expression measures and rotary speed instruction signal rd illustrates overvoltage or under-voltage, then motor controling part 74 is judged as and has produced overvoltage or under-voltage among commercial power line 48a, the 48b.As adopt Fig. 3 illustrated, sometimes propeller fan 37 is owing to outer gas stream rotates, rotating speed instrumentation section 744 is detected do not have the rotation situation be made as in the situation of condition, except the rotation of this propeller fan 37 owing to external force makes the situation of dc bus voltage Vdc variation, can judge the electric voltage exception of commercial power line 48a, 48b.
（5-4）
In above-mentioned embodiment and above-mentioned variation 5-1 and even 5-3, although in motor controling part 74, carried out the judgement that whether produced electric voltage exception among commercial power line 48a, the 48b,, this judgement also can be undertaken by main body control section 75.For example also can constitute, when entering step S2 in the condition that satisfies step S1, the testing result from the control of discharge section 746 of motor controling part 74 to main body control section 75 output voltage test sections 81.For example, as shown in Figure 8, replace the step S3 of Fig. 7, in step S13, the testing result from the control of discharge section 746 of motor controling part 74 to main body control section 75 output voltage test sections 81.And, in following step S14, about whether providing overvoltage from commercial power line 48a, 48b, judged according to the testing result of this voltage detection department 81 by main body control section 75.If main body control section 75 was judged the overvoltage of commercial power line 48a, 48b unusually according to the voltage detecting result in the past, then by the overvoltage of commercial power line 48a, 48b being judged unusually according to the testing result of voltage detection department 81 by main body control section 75 like this, thereby can obtain and in the past almost identical structure.Equally, also can replace the overvoltage of commercial power line 48a, 48b unusual, perhaps with overvoltage unusually concurrently, unusually judging the under-voltage of commercial power line 48a, 48b in main body control section 75.
（5-5）
In above-mentioned variation 5-4, in step S2, use the 1st upper limit threshold voltages and the 1st lower threshold voltage that overvoltage and the under-voltage of commercial power line 48a, 48b are detected by voltage detection department 81.But, also can pass through voltage detection department 81, directly output detected voltage signal in step S2.And as shown in Figure 9, this moment is from the voltage signal Vv of control of discharge section 746 to 75 outputs of main body control section from voltage detection department 81 outputs of motor controling part 74.In main body control section 75, also can the voltage signal Ev when not having drive chamber's external fan motor section 38 be judged by the overvoltage of commercial power line 48a, 48b and the generation of under-voltage.
Especially, in the situation of the vector control of carrying out motor or the situation of carrying out proofreading and correct based on the output voltage of DC bus voltage, originally control motor with regard to by motor controling part voltage signal (absolute value of voltage) being detected, and therefore, can directly use this signal.
（5-6）
In above-mentioned variation 5-5 etc., also can constitute, the value of the dc bus voltage Vdc of main body control section 75 when not having drive chamber's external fan motor section 38 is judged the overvoltage of commercial power line 48a, 48b and the generation of under-voltage.But the item that main body control section 75 is judged in step S14 is not limited to the generation of overvoltage and the under-voltage of commercial power line 48a, 48b.
As shown in Figure 6, No. four transfer valves 32, motor-driven valve 34 and compressor electric motor section the various actuators such as are connected and are connected with commercial power line 48a, 48b.Because these are unusual, the voltage of commercial power line 48a, 48b also changes, because this impact, dc bus voltage Vdc changes.Therefore, in step S14, also can constitute and in confirming commercial power line 48a, 48b, not produce after overvoltage and the under-voltage, make these actuator action, and according to the variation of the voltage that produces among the dc bus voltage Vdc, whether produced unusually in 75 pairs of actuators of main body control section and judged.
（5-7）
In the above-described embodiment; the position that cuts off by electromagnetic contactor 90 only is rectification circuit 49B; but; as shown in figure 10; rear class (from the downstream that source power supply is observed) by whole cutting-off controlling power supplys; be not only outdoor fan motor section, also can protect compressor electric motor section and other actuators.
（5-8）
In above-mentioned embodiment and above-mentioned variation, example as the electric device that comprises motor, for example understand the air attemperation apparatus 10 that brushless DC motor is arranged at off-premises station 30, but, in the indoor fan motor section 23 of indoor set 20, be provided with in the situation of brushless DC motor, also can be suitable for for indoor fan motor section 23.In addition, the electric device that comprises motor is not limited to the air attemperation apparatus 10 such as above-mentioned embodiment, and is also applicable for other electric devices with motor.
For example; go into business at indoor pusher side and to accept electric power with power supply and carry out power supply from indoor set to off-premises station and supply with the air attemperation apparatus of this mode; in the situation that is applicable to indoor fan motor section, avoid applying overvoltage to off-premises station by cutting off to supply with also can protect to the power supply of off-premises station.
For example, air attemperation apparatus 10A shown in Figure 11 accepts electric power by indoor set 20A from commercial AC power 48, and carries out power supply from indoor set 20A to off-premises station 30A and supply with.Indoor set 20A has: indoor control part 60 and indoor fan motor section 23, wind direction governor motion 27 and the display part 28 controlled by this indoor control part 60.Indoor fan motor section 23 has: outdoor fan motor 38a, inverter circuit 38b, rectification circuit 49B, voltage detection department 81, current detecting part 82, discharge part 497 and the dc bus 498 that has with outdoor fan motor section 38 shown in Figure 6,499 corresponding indoor fan motor 23a, inverter circuit 23b, rectification circuit 49C, voltage detection department 81A, current detecting part 82A, discharge part 497A and dc bus 498A, 499A.In addition, indoor control part 60 has the main body control section 75 that has with outdoor control part 70 and motor controling part 74 corresponding main body control section 65 and motor controling part 64.
And, same with main body control section 75 and motor controling part 74, when the state of a control that at least one party in motor controling part 64 and the main body control section 65 satisfies the condition of overvoltage or under-voltage and motor at the dc bus voltage of inverter circuit 23b also satisfies predetermined condition, be judged as among commercial power line 48a, the 48b that is connected with inverter circuit 23b and produced electric voltage exception.
When main body control section 65 has produced electric voltage exception in being judged as commercial power line 48a, 48b, thereby cutting off to supply with to protect to the power supply of off-premises station 30 by electromagnetic contactor 91 avoids applying overvoltage to off-premises station 30.
（5-9）
In the above-described embodiment, although take unusually being illustrated as example of supply voltage, but, in the situation that has the different power-supply system of a plurality of voltages (in example in Japan, the power supply of 100V and 200V power supply mix the same situation within doors that is present in) under, also can the mistake (mistake connects) that this power supply connects be detected.
So, connect in the situation about making a mistake at power supply, even if do not make fan electromotor and actuator carry out any action, the DC bus voltage value also becomes the value more different with normal connection value (for example value of 2 times and 1/2 times), therefore is easy to detection.Especially as described in the variation before, by a plurality of threshold values are set, can increase the accuracy of this state-detection (mistake connect detect).
（5-10）
Abnormal signal/voltage signal does not limit the load modes such as transmission of the state/voltage of digital High/Low signal, analog voltage signal, communication to the transmission of main body control section.
（5-11）
In above-mentioned embodiment and above-mentioned variation, although as the motor that comprises in the electric device, be illustrated as an example of brushless DC motor example,, the motor that comprises in the electric device is not limited to brushless DC motor.In addition, in above-mentioned embodiment and above-mentioned variation, although the situation corresponding with 2 cross streams power supplys of 1 system to commercial power line 48a, 48b is illustrated, but, commercial power line also can be that above power supply is corresponding mutually with 3, in addition, the present invention also is applicable to the situation that air attemperation apparatus is connected with the commercial power line of a plurality of systems.
(6) feature
（6-1）
As described above, in the detection of the overvoltage of dc bus voltage Vdc or under-voltage, do not drive the control that control outdoor fan motor 38a(is being halted state by this conditioned disjunction before add driving outdoor fan motor 38a) this condition etc. (predetermined condition of state of a control), carry out the detection of overvoltage or the under-voltage of dc bus voltage Vdc during the change of the dc bus voltage Vdc that can bring in the driving that does not have outdoor fan motor 38a.This is because when the predetermined condition of the state of a control that satisfies this kind outdoor fan motor 38a, the incidence relation between the voltage change of the variation of dc bus voltage Vdc and commercial power line 48a, 48b is stronger.Thus, can be also used as checkout gear for detection of overvoltage or the under-voltage of commercial power line 48a, 48b for detection of the voltage detection department 81 of the dc bus voltage Vdc that offers inverter circuit 38b, save this kind checkout gear, thereby can reduce the number be used to the checkout gear of the detection of carrying out overvoltage or under-voltage.In addition, this conditioned disjunction drives the control that control outdoor fan motor 38a(is being halted state before use driving outdoor fan motor 38a) during this condition, owing to can get rid of the impact that the driving of outdoor fan motor 38a brings, therefore, can improve the Accuracy of Judgement of the electric voltage exception of commercial power line 48a, 48b.
（6-2）
In the past, if main body control section 75 receives the signal of expression abnormity of power supply from the checkout gear for detection of overvoltage or under-voltage, thereby then become and in the past identical structure by the electric voltage exception signal Varm2 that makes main body control section 75 from motor controling part 74, receive the expression abnormity of power supply, and can not change the structure of main body control section 75, and reduce the number for detection of the checkout gear of overvoltage or under-voltage.In addition, can consist of in main body control section 75 samely, can not carry out in the situation of change of structure of main body control section 75, the rising of cost that can inhibitory control device 50.
（6-3）
In by the illustrated situation of above-mentioned variation 5-5, the dc bus voltage Vdc of inverter circuit 38b satisfies the condition of overvoltage or under-voltage and also satisfies when outdoor fan motor 38a not being driven this condition of control (state of a control satisfies predetermined condition), and motor controling part 74 sends the value Ev(voltage signal relevant with dc bus voltage Vdc of the voltage that detects by voltage detection department 81 to main body control section 75).And the generation of the electric voltage exception of commercial power line is judged by main body control section 75 according to the value Ev of this voltage.Therefore, main body control section 75 is in order to judge electric voltage exception, only by from motor controling part 74 receiver voltage signal Vv just can, therefore, can not increase the number of terminals of main body control section 75, and reduce the number for detection of the checkout gear of overvoltage or under-voltage.In addition, can consist of in main body control section 75 samely, can suppress in the situation of increase of number of terminals of main body control section 75, the rising of cost that can inhibitory control device 50.
（6-4）
When producing electric voltage exception in being judged as commercial power line 48a, 48b, main body control section 75 is by electromagnetic contactor 90 shown in Figure 6, cuts off being connected between commercial power line 48a, 48b and the dc bus 498,499.Thus, when in commercial power line 48a, 48b, having produced electric voltage exception, by cutting off commercial power line 48a, 48b and dc bus 498,499, thereby, the impact that can prevent the electric voltage exception of commercial power line 48a, 48b involves inverter circuit 38b for a long time, and can prevent because the electric voltage exception of commercial power line 48a, 48b causes inverter circuit 38b to break down.
Herein, although main body control section 75 adopts electromagnetic contactors 90 to cut off being connected between commercial power line 48a, 48b and the dc bus 498,499,, also can constitute motor controling part 74 employing electromagnetic contactors 90 and cut off.
（6-5）
As illustrated by above-mentioned embodiment, at least one party in main body control section 75 and the motor controling part 74 only judges whether produced electric voltage exception among commercial power line 48a, the 48b according to the information of the dc bus voltage Vdc of described inverter circuit 38b.At this moment, because for the judgement that whether has produced electric voltage exception, main body control section only is the information that receives dc bus voltage Vdc from motor controling part 74, therefore, can save input for detection of terminal and the line of the main body control section 75 of the information of electric voltage exception.Therefore, the structure of main body control section 75 can be simplified, and the cost of control device 50 can be subdued.In the above-described embodiment, although only judge whether produced electric voltage exception among commercial power line 48a, the 48b according to the information of the dc bus voltage Vdc of inverter circuit 38b, but, certainly, also can constitute and consider that in order to improve this Accuracy of Judgement other information judge.
（6-6）
As illustrated among the above-mentioned variation 5-1; at least one party in motor controling part 74 and the main body control section 75 constitute compare with dc bus voltage Vdc and according to the 1st upper limit threshold voltage (the 1st threshold value) to whether protecting inverter circuit 38b to judge; compare with dc bus voltage Vdc and according to the 2nd upper limit threshold voltage (the 2nd threshold value) to commercial power line 48a; the electric voltage exception of 48b is judged; thus; by having for judging commercial power line 48a; the 2nd upper limit threshold voltage of the electric voltage exception of 48b; thereby; the 2nd upper limit threshold voltage can be used for only to commercial power line 48a; the judgement that the overvoltage of 48b is unusual, and can improve commercial power line 48a; the Accuracy of Judgement that the overvoltage of 48b is unusual.
In addition, use the situation of the 1st lower threshold voltage to be illustrated by variation 5-2 to the generation for the under-voltage of judging commercial power line 48a, 48b, but, identical with the situation of above-mentioned superpotential detection, the 2nd lower threshold voltage of detection special use of the under-voltage of commercial power line 48a, 48b also can be set, and the effect of situation that this 2nd lower threshold voltage is set is identical with the effect of the situation that the 2nd upper limit threshold voltage is set.
（6-7）
As illustrated by above-mentioned variation 5-6, can constitute and make main body control section 75 in order to whether having produced in the actuator unusually to judge and to use the information of the dc bus voltage Vdc of inverter circuit 38b.When so consisting of, can save the device for detection of following information, that is, carry out whether having produced in the actuator information that information among the required information of unusual judgement, that can obtain according to the dc bus voltage Vdc from inverter circuit 38b is confirmed.
Claims (9)
1. the control device (50) of an electric device (10,10A), this electric device comprises by inverter circuit (38b, 23b) provides the motor (38a, 23a) that drives electric power, and described control device has:
Motor controling part (74,64), it is used for controlling described motor: and
Main body control section (75,65), it is connected with described motor controling part, is used for controlling described electric device,
When the state of a control that at least one party in described motor controling part and the described main body control section satisfies the condition of overvoltage or under-voltage and described motor at the dc bus voltage of described inverter circuit satisfies predetermined condition, be judged as in the commercial power line (48a, 8b) that is connected with described inverter circuit and produced electric voltage exception.
2. control device according to claim 1, wherein,
When described motor controling part has produced electric voltage exception in being judged as described commercial power line, to the signal of the electric voltage exception of the described commercial power line of described main body control section output expression.
3. control device according to claim 1, wherein,
Described motor controling part sends the voltage signal relevant with dc bus voltage to described main body control section,
Described main body control section's basis voltage signal relevant with dc bus voltage judged the generation of the electric voltage exception of described commercial power line.
4. the described control device of any one in 3 according to claim 1, wherein,
Described predetermined condition referred to before driving described motor, or made a comment or criticism and make described motor become the control of halted state.
5. the described control device of any one in 4 according to claim 1, wherein,
Described control device also has the dc bus (498,499) that is connected with described inverter circuit and described commercial power line,
When at least one party in described motor controling part and the described main body control section has produced electric voltage exception in being judged as described commercial power line, cut off being connected between described commercial power line and the described dc bus.
6. the described control device of any one in 5 according to claim 1, wherein,
At least one party in described motor controling part and the described main body control section only judges whether produced electric voltage exception in the described commercial power line according to the information of the dc bus voltage of described inverter circuit.
7. the described control device of any one in 6 according to claim 1, wherein,
Whether at least one party and dc bus voltage in described motor controling part and the described main body control section compare and described inverter circuit are protected according to the 1st threshold decision; and, compare with dc bus voltage and according to the electric voltage exception of the described commercial power line of the 2nd threshold decision.
8. a heat pump assembly (10), it is connected with commercial power line (48a, 48b), and this heat pump assembly has:
Fan electromotor (38a, 23a), it is for generation of the air stream that carries out heat exchange with cold-producing medium;
Inverter circuit (38b, 23b), it is connected with described commercial power line in order to provide driving electric power to described fan electromotor;
Voltage detection department (81,81A), it detects the dc bus voltage of described inverter circuit and carries out unusual detection;
Motor controling part (74,64), it is connected with described inverter circuit and described voltage detection department, is used for controlling described fan electromotor; And
Main body control section (75,65), it is connected with described motor controling part, is used for controlling described heat pump assembly;
Wherein, when the state of a control that at least one party in described motor controling part and the described main body control section satisfies the condition of overvoltage or under-voltage and described fan electromotor at the dc bus voltage of described inverter circuit also satisfies predetermined condition, be judged as in the described commercial power line and produced electric voltage exception.
9. heat pump assembly according to claim 8, wherein,
Described heat pump assembly also has the actuator (32,34,40,27,28) beyond the described fan electromotor, and this actuator is by the driven by power that provides from described commercial power line,
Whether described main body control section to have produced unusual and has used the information of the dc bus voltage of described inverter circuit in order to judge in the described actuator.
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| JPJP2012-087562 | 2012-04-06 | ||
| JP2012-087562 | 2012-04-06 | ||
| JP2012087562A JP5724933B2 (en) | 2012-04-06 | 2012-04-06 | Control device and heat pump device |
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| CN103363620A true CN103363620A (en) | 2013-10-23 |
| CN103363620B CN103363620B (en) | 2016-05-25 |
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| JP2004286239A (en) * | 2003-03-19 | 2004-10-14 | Daikin Ind Ltd | Method of controlling cooling device |
| EP2071251A1 (en) * | 2006-09-19 | 2009-06-17 | Daikin Industries, Ltd. | Air-conditioning control intermediate device, air-conditioning control system, air-conditioning control method, and air-conditioning control program |
| CN101013522A (en) * | 2006-12-07 | 2007-08-08 | 奥维尔科技(深圳)有限公司 | Intelligent air conditioner control method and system |
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| CN111602009B (en) * | 2018-01-11 | 2022-03-01 | 三菱电机株式会社 | Air conditioner |
| CN111578448A (en) * | 2020-05-25 | 2020-08-25 | 广东美的制冷设备有限公司 | Air conditioner detection method and system, air conditioner and computer readable storage medium |
| CN111578448B (en) * | 2020-05-25 | 2021-09-21 | 广东美的制冷设备有限公司 | Air conditioner detection method and system, air conditioner and computer readable storage medium |
| CN114362179A (en) * | 2021-11-25 | 2022-04-15 | 科希曼电器有限公司 | Air source heat pump suitable for rural low-voltage of low temperature |
| CN115371200A (en) * | 2022-08-09 | 2022-11-22 | 珠海格力电器股份有限公司 | Air conditioner discharging method and device, storage medium and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103363620B (en) | 2016-05-25 |
| JP2013219898A (en) | 2013-10-24 |
| JP5724933B2 (en) | 2015-05-27 |
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