CN204993125U - Motor element , integrated circuit who is used for motor drive , fan and pump - Google Patents
Motor element , integrated circuit who is used for motor drive , fan and pump Download PDFInfo
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- CN204993125U CN204993125U CN201520594368.5U CN201520594368U CN204993125U CN 204993125 U CN204993125 U CN 204993125U CN 201520594368 U CN201520594368 U CN 201520594368U CN 204993125 U CN204993125 U CN 204993125U
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Abstract
The utility model provides a motor element and be used for motor drive's integrated circuit. Motor element includes can be by the motor and the motor -drive circuit of alternating current power supply power supply. The motor includes the rotor of stator and stator rotation relatively. The stator includes stator core and twines the stator winding on stator core. Drive circuit includes that an integrated circuit reaches the controllable bidirectional alternating current who is connected with integrated circuit and opens. Controllable bidirectional alternating current switch is established ties in being configured as between two terminals being connected alternating current power supply with stator winding. The integration has at least wherein two rectifiers, detection circuitry and ON -OFF control circuit among the integrated circuit. The rectifier is used for producing the DC voltage that offers detection circuitry at least. Detection circuitry is used for the magnetic polarity of detection rotor. ON -OFF control circuit is configured as the polarity of the rotor field detected according to alternating current power supply's polarity and detection circuitry, control controllable bidirectional alternating current switch with predetermined mode switch on and off -state between switch.
Description
Technical field
The utility model relates to the drive circuit of motor, particularly relates to the integrated circuit being applicable to drive single-phase permanent-magnet synchronous motor.
Background technology
Synchronous machine is in starting process, the electromagnet of stator produces alternating magnetic field, be equivalent to the resultant magnetic field that rotates forward a reversing magnetic field, this magnetic field drags the vibration of p-m rotor generation beat, if the beat oscillation amplitude of rotor constantly increases, rotor finally can be made to accelerate to rapidly synchronous with the alternating magnetic field of stator to the rotation of a direction.Conventional synchronization motor, for guaranteeing to start, the starting torque of motor arranges usually comparatively large, causes motor operational efficiency on working point lower.On the other hand, because the polarity of the initial energising of alternating current and p-m rotor stop position are not fixed, cannot ensure that rotor starts all along same direction directional-rotation at every turn, therefore, in the application such as fan, water pump, the impeller driven by rotor adopts inefficient straight type radial blade usually, causes the operational efficiency of fan, water pump etc. itself also lower.
Utility model content
Embodiment of the present utility model provides a kind of electric machine assembly, and comprising can by the motor of ac power supply and motor-drive circuit.Motor comprise stator and can relative stator rotate rotor.Stator comprises stator core and is wound in the stator winding on stator core.Drive circuit comprises an integrated circuit and the controllable bidirectional that is connected with integrated circuit exchanges and opens.Controllable bidirectional alternating-current switch and stator winding be series at be configured to be connected AC power two terminals between.Rectifier, testing circuit and ON-OFF control circuit at least wherein two is integrated with in integrated circuit.Rectifier is for generation of the direct voltage being at least supplied to testing circuit.Testing circuit is used for the polarity of the magnetic field of detection rotor.ON-OFF control circuit is configured to the polarity of the rotor field detected according to polarity and the testing circuit of AC power, controls controllable bidirectional alternating-current switch and switches between conducting and cut-off state in a predefined manner.
Preferably, described ON-OFF control circuit be configured to only described AC power be positive half period and testing circuit detect rotor field be the first polarity and described AC power be negative half-cycle and testing circuit detect rotor field for make the conducting of described controllable bidirectional alternating-current switch with the first opposite polarity second polarity chron.
Preferably, described drive circuit also comprises the reducing transformer be connected with described rectifier.
Preferably, described rectifier and reducing transformer are connected between two nodes and form a branch road, described two-way exchange switch and described branch circuit parallel connection.
Preferably, described drive circuit also comprises the pressurizer for stablizing described direct voltage, and described rectifier, reducing transformer, pressurizer, testing circuit, ON-OFF control circuit are all integrated in described integrated circuit.
Optionally, described rectifier is integrated in described integrated circuit, and described reducing transformer is located at described integrated circuit external.
Preferably, the pressurizer for stablizing described direct voltage is also integrated with in described integrated circuit.
Preferably, described controllable bidirectional alternating-current switch is three terminal bidirectional thyristor.
Preferably, be provided with Magnetic Sensor in described testing circuit, described integrated circuit is installed near described rotor with the polarity of the magnetic field and the change that make rotor described in the perception of described Magnetic Sensor energy.
Optionally, Magnetic Sensor is not established in described testing circuit.
Preferably, microprocessor is not established in described drive circuit.
Preferably, described electric machine assembly does not establish printed circuit board (PCB).
Preferably, described motor is single-phase permanent-magnet synchronous motor, described rotor comprises at least one block permanent magnet, uneven magnetic circuit is formed between described stator and p-m rotor, make described p-m rotor when static its pole axis relative to distortion angle of stator, after described stator winding electrifying described rotor steady-state process with 60f/p circle/minute rotating speed constant-speed operation, wherein f is the frequency of described AC power, and p is the number of pole-pairs of described rotor.
The utility model provides a kind of for motor-driven integrated circuit on the other hand, comprise: housing, the some pins stretched out from described housing and the ON-OFF control circuit be located on semiconductor chip, described semiconductor chip and ON-OFF control circuit are packaged in described housing, described ON-OFF control circuit is configured to the control signal of rotor field polarity information generation for controlling a two-way alternating-current switch conducting or cut-off according to described motor, to control the step mode of described motor.
Preferably, described semiconductor chip is also integrated with the testing circuit of the rotor field polarity for detecting described motor.
Preferably, described semiconductor chip is also integrated with the rectifier that can produce the direct voltage being at least supplied to described testing circuit.
Preferably, described semiconductor chip is also integrated with the pressurizer for stablizing described direct voltage.
Preferably, described two-way exchange switch is encapsulated in described housing.
Preferably, microprocessor is not established in described integrated circuit.
Preferably, the pin of described integrated circuit is no more than four.
Along fixed-direction start when the circuit of the utility model embodiment can ensure that motor is energized at every turn and rotate.In the application such as blower fan, water pump, the impeller/fan driven by rotor can be allowed to adopt flexure type blade, thus improve the efficiency of blower fan, water pump.In addition, by by all or part of for the drive circuit of motor encapsulation in integrated circuits, can circuit cost be reduced, and improve the reliability of circuit.
Accompanying drawing explanation
In accompanying drawing:
Fig. 1 illustrates the single-phase permanent-magnet synchronous motor according to the utility model one embodiment;
Fig. 2 illustrates the circuit theory diagrams of the single-phase permanent-magnet synchronous motor according to the utility model one embodiment;
Fig. 3 illustrates the circuit block diagram of a kind of implementation of the integrated circuit in Fig. 2;
Fig. 4 illustrates the circuit block diagram of the another kind of implementation of the integrated circuit in Fig. 2;
Fig. 5 illustrates a kind of embodiment of the motor circuit of Fig. 2;
Fig. 6 illustrates the oscillogram of motor circuit in Fig. 5;
Fig. 7 to Fig. 9 illustrates other several embodiments of the motor circuit of Fig. 2 respectively;
Figure 10 illustrates the circuit theory diagrams of the single-phase permanent-magnet synchronous motor according to another embodiment of the utility model;
Figure 11 illustrates the circuit block diagram of a kind of implementation of the integrated circuit in Figure 10;
Figure 12 illustrates the circuit theory diagrams of the single-phase permanent-magnet synchronous motor according to another embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing, by describing in detail embodiment of the present utility model, will make the technical solution of the utility model and other beneficial effects apparent.Be appreciated that accompanying drawing only provides reference and explanation use, be not used for being limited the utility model.The size shown in accompanying drawing is only for ease of clear description, and does not limit proportionate relationship.
Fig. 1 illustrates the single-phase permanent-magnet synchronous motor according to the utility model one embodiment.Described synchronous machine 10 comprise stator and can relative stator rotate rotor 11.Stator has stator core 12 and is set around the stator winding 16 in stator core 12.Stator core can be made up of soft magnetic materials such as pure iron, cast iron, cast steel, electrical sheet, silicon steel.Rotor 11 has permanent magnet, when stator winding 16 is connected with an AC power rotor 11 steady-state process with 60f/p enclose/minute rotating speed constant-speed operation, wherein f is the frequency of described AC power, and p is the number of pole-pairs of rotor.In the present embodiment, stator core 12 has two relative pole portions 14.Each pole portion 14 has polar arc face 15, and the outer surface of rotor 11 is relative with polar arc face 15, forms basic even air gap 13 between the two.The alleged basic uniform air gap of the application, refer to that between stator and rotor, major part forms even air gap, only having compared with small part is non-homogeneous air gap.Preferably, the polar arc face 15 in stator poles portion is established the starting groove 17 of indent, the part on polar arc face 15 except starting groove 17 is then concentric with rotor.Above-mentioned configuration can form non-uniform magnetic field, ensure that rotor its pole axis S1 (being shown in Fig. 5) when static to tilt an angle relative to the central shaft S2 in stator poles portion 14, allow motor under the effect of drive circuit during each energising rotor can have starting torque.The pole axis S1 of its rotor refers to the line of demarcation between the magnetic pole that rotor two polarity are different, and the central shaft S2 in stator poles portion 14 refers to the line through stator two Ji Bu 14 centers.In the present embodiment, stators and rotators all has two magnetic poles.Understandable, in more embodiments, the number of magnetic poles of stators and rotators also can be unequal, and have more magnetic poles, such as four, six etc.
Fig. 2 illustrates the circuit theory diagrams of the single-phase permanent-magnet synchronous motor 10 according to the utility model one embodiment.Wherein, the stator winding 16 of motor and an integrated circuit 18 are series at AC power 24 two ends.Be integrated with the drive circuit of motor in integrated circuit 18, this drive circuit can make motor all start along a fixed-direction when each energising.
Fig. 3 illustrates a kind of implementation of integrated circuit 18.Two pins 21 comprise housing 19, stretching out from housing 19 and the drive circuit be packaged in housing, described drive circuit is located on semiconductor chip, comprising the testing circuit 20 of the rotor field polarity for detecting motor, being connected to controllable bidirectional alternating-current switch 26 between two pins 21 and ON-OFF control circuit 30, ON-OFF control circuit 30 is configured to the rotor field polarity detected according to testing circuit 20, controls controllable bidirectional alternating-current switch 30 and switches between conducting and cut-off state in a predefined manner.
Preferably, ON-OFF control circuit 30 be configured to only AC power 24 be positive half period and testing circuit 20 detect rotor field be the first polarity and AC power 24 be negative half-cycle and testing circuit 20 detect rotor field for make controllable bidirectional alternating-current switch 26 conducting with the first opposite polarity second polarity chron.This configuration can make stator winding 16 only drag rotor along a fixed-direction in the electric motor starting stage.
Fig. 4 illustrates the another kind of implementation of integrated circuit 18, is mainly with the difference of Fig. 3, and the integrated circuit of Fig. 4 is also provided with rectifier 28, and controllable bidirectional alternating-current switch 26 is parallel between two pins 21, can produce direct current and be supplied to testing circuit 20.In this example, testing circuit 20 is preferably Magnetic Sensor (also referred to as position transducer), and integrated circuit is installed near rotor with the changes of magnetic field making Magnetic Sensor energy perception rotor.Be appreciated that, in more implementations, testing circuit 20 also can not establish Magnetic Sensor, and realizes the detection of the changes of magnetic field to rotor by other means.In the utility model embodiment, by all being encapsulated in integrated circuits by the drive circuit of motor, can circuit cost be reduced, and improve the reliability of circuit.In addition, motor can not use printed circuit board (PCB), is connected after only needing that integrated circuit is fixed on applicable position by the line group of wire and motor and power supply.
In the utility model embodiment, stator winding 16 and AC power 24 are series between two node A, B.AC power 24 can be preferably mains ac power supply, has the fixed frequency of such as 50 hertz or 60 hertz, and current/voltage can be such as 110 volts, 220 volts, 230 volts etc.Controllable bidirectional alternating-current switch 26 is parallel between two node A, B with the stator winding 16 of connecting and AC power 24.Controllable bidirectional alternating-current switch 26 is preferably three terminal bidirectional thyristor (TRIAC), and two anode connects two pins 21 respectively.Be appreciated that controllable bidirectional alternating-current switch 26 also can such as be realized by two unidirectional thyristors of reverse parallel connection, and corresponding control circuit is set to control this two unidirectional thyristors according to predetermined way.Rectifier 28 and switch 26 are parallel between two pins 21.Alternating current between two pins 21 is converted to low-voltage DC by rectifier 28.The low-voltage DC that testing circuit 20 can be exported by rectifier 28 is powered, and for detecting the position of magnetic pole of the p-m rotor 11 of synchronous machine 10, and exports corresponding signal.ON-OFF control circuit 30 is connected with rectifier 28, testing circuit 20 and controllable bidirectional alternating-current switch 26, be configured to the polarity information according to the rotor magnetic pole position information of testing circuit 20 detection and the AC power 24 from rectifier 28 acquisition, control controllable bidirectional alternating-current switch 26 to switch between conducting and cut-off state in a predefined manner, make stator winding 16 only drag rotor 14 along aforesaid fixing starting direction in the electric motor starting stage and rotate.In the utility model, when 26 conducting of controllable bidirectional alternating-current switch, two pins 21 are shorted, and rectifier 28 is no longer power consumption because no current flows through, therefore, it is possible to improve efficiency greatly.
Fig. 5 illustrates a kind of embodiment of motor circuit in Fig. 2.Wherein, the stator winding 16 of motor and AC power 24 are series between two pins 21 of integrated circuit 18.Two node A, B are connected with two pins 21 respectively.First anode T2 and the second plate T1 of three terminal bidirectional thyristor 26 are connected two node A, B respectively.Rectifier 28 and three terminal bidirectional thyristor 26 are parallel between two node A, B.Alternating current between two node A, B is converted to low-voltage DC (being preferably between 3 volts to 18 volts) by rectifier 28.Change-over circuit 28 comprises and is oppositely connected to the first voltage stabilizing didoe Z1 between two node A, B and the second voltage stabilizing didoe Z2 through the first resistance R1 and the second resistance R2 respectively.The tie point of the negative electrode of the first resistance R1 and the first voltage stabilizing didoe Z1 forms the high voltage output C of rectifier 28, and the tie point of the anode of the second resistance R2 and the second voltage stabilizing didoe Z2 forms the low voltage output D of rectifier 28.The positive and negative power supply terminal of voltage output end C and D difference link position transducer 20.ON-OFF control circuit 30 connects the control pole G of the high voltage output C of rectifier 28, the output H1 of position transducer 20 and three terminal bidirectional thyristor 26 respectively by three terminals.ON-OFF control circuit 30 comprises the 3rd resistance R3, the 5th diode D5 and the 4th resistance R4 be series between the output H1 of the position transducer 20 and control pole G of controllable bidirectional alternating-current switch 26 and the 6th diode D6.The anode of the 6th diode D6 connects the control pole G of controllable bidirectional alternating-current switch.3rd resistance R3 one end connects the high voltage output C of rectifier 28, and the other end connects the anode of the 5th diode D5.The negative electrode of the 5th diode D5 connects the control pole G of controllable bidirectional alternating-current switch 26.
Composition graphs 6, is described the operation principle of foregoing circuit.In Fig. 6, Vac represents the voltage waveform of AC power 24, and Iac represents the current waveform flowing through stator coil 16.Due to the inductive of stator coil 16, current waveform Iac lags behind voltage waveform Vac.V1 represents the voltage waveform at voltage stabilizing didoe Z1 two ends, V2 represents the voltage waveform at voltage stabilizing didoe Z2 two ends, Vcd represents the voltage waveform between two output C, D of rectifier 28, Ha represents the signal waveform of the output H1 of position transducer 20, and Hb represents the rotor field that position transducer 20 detects.In this example, when position transducer 20 is by normal power supply, its output H1 output logic high level when the rotor field of detection is the arctic (North), its output H1 output logic low level when the South Pole (South) being detected.
When the rotor field Hb that position transducer 20 detects is North, at first positive half cycle of AC power, increase gradually from time t0 to t1 supply voltage, the output H1 of position transducer 20 exports high level, and electric current is successively through control pole G and the second plate T1 of resistance R1, resistance R3, diode D5 and bidirectional thyristor 26.When flowing through the drive current controlling pole G and electrode T1 and being greater than gate trigger current Ig, bidirectional thyristor 26 conducting.By A, B two node short circuits after bidirectional thyristor 26 conducting, in the stator coil 16 of therefore motor, electric current increases gradually, until there is larger forward current to flow through, drives rotor 14 to rotate along the clockwise direction shown in Fig. 3.Because A, B 2 are shorted, between time t1 and t2, in rectifier 28, no current flows through, therefore resistance R1 and R2 not power consumption, and position transducer 20 is because stopping without supply power voltage exporting.And bidirectional thyristor 26 is owing to flowing through, and electric current between two anode T1 and T2 is enough large (maintains electric current I higher than it
hold), therefore, between control pole G and second plate T1 without drive current, bidirectional thyristor 26 still keeps conducting.At the negative half period of AC power, the electric current after time point t3 between T1, T2 is less than maintenance electric current I
hold, bidirectional thyristor 26 turns off, and starts have electric current to flow through in rectifier 28, and the output H1 of position transducer 20 exports high level again.Because C point current potential is lower than E point current potential, without drive current between the control pole G of bidirectional thyristor 26 and second plate T1, therefore bidirectional thyristor 26 keeps turning off.Because the resistance of resistance R1 and R2 in rectifier 28 is much larger than the resistance value of coil of stator of motor 16, now flow through the current value of stator coil 16 much smaller than the current value flowing through stator coil 16 between time period t 1 and t2, substantially actuating force is not produced to rotor 14, therefore, rotor 14 continues to rotate along clockwise direction under effect of inertia.At second positive half cycle of AC power, identical with first positive half cycle, electric current is successively through control pole G and the second plate T1 of resistance R1, resistance R3, diode D5 and bidirectional thyristor 26, bidirectional thyristor 26 conducting again, the electric current flowing through stator coil 16 continues to drive rotor 14 to rotate along clockwise direction, same, A, B two node be shorted therefore resistance R1 and R2 not power consumption; To power-half cycle, the electric current between two anodes T1, T2 of bidirectional thyristor 26 is less than maintenance electric current I
holdtime, bidirectional thyristor 26 turns off again, and rotor continues to rotate along clockwise direction under effect of inertia.
Time point t4, the rotor field Hb that position transducer 20 detects becomes South from North, and now AC power is still at its positive half cycle, and bidirectional thyristor 26 conducting, by A, B 2 short circuits, in rectifier 28, no current flows through.After AC power enters negative half period, the electric current flowing through two anodes T1, T2 of bidirectional thyristor 26 reduces gradually, and at time point t5, bidirectional thyristor 26 is turned off.Flow through the second plate T1 of bidirectional thyristor 26 successively with after-current and control pole G, diode D6, resistance R4, position transducer 20, resistance R2 and stator coil 16.Along with drive current increases gradually, at time point t6, bidirectional thyristor 26 conducting again, by A, B two node short circuits again, resistance R1 and R2 not power consumption, position transducer 20 is because stopping without supply power voltage exporting.Have larger reverse current to flow through in stator coil 16, because now rotor field is South, therefore rotor 14 continues to be driven clockwise.Between time point t5 and t6, the first voltage stabilizing didoe Z1 and the second voltage stabilizing didoe Z2 conducting, have voltage to export between two output C, D of therefore rectifier 28.At time point t7, AC power enters positive half cycle again, and bidirectional thyristor 26 current over-zero turns off, and control circuit voltage increases gradually after this.Along with voltage increases gradually, start have electric current to flow through in rectifier 28, the output H1 of position transducer 20 exports as low level, and without drive current between the control pole G of bidirectional thyristor 26 and second plate T1, therefore bidirectional thyristor 26 turns off.Because the electric current flowing through stator coil 16 is very little, therefore substantially actuating force is not produced to rotor 14.At time point t8, power supply is just, position transducer output low level, maintains off state after bidirectional thyristor 26 current over-zero, and rotor continues to rotate along clockwise direction under effect of inertia.According to the utility model, after stator coil energising, rotor only need revolve turn around can accelerate to synchronous with stator field.
The circuit of the utility model embodiment starts along fixed-direction when can ensure that motor is energized at every turn.In the application such as fan, water pump, the impeller driven by rotor can be made to adopt flexure type blade, thus improve the efficiency of fan, water pump.In addition, even if the utility model embodiment utilizes three terminal bidirectional thyristor also can keep the feature of conducting after switch without drive current, avoid resistance R1 and R2 of rectifier 28 still power consumption after three terminal bidirectional turn on thyristors, therefore, it is possible to improve efficiency greatly.
Fig. 7 illustrates the another kind of embodiment of motor circuit in Fig. 2.Wherein, the stator winding 16 of motor and AC power 24 are series between two pins 21 of integrated circuit 18.Two node A, B are connected with two pins 21 respectively.First anode T2 and the second plate T1 of three terminal bidirectional thyristor 26 are connected two node A, B respectively.Rectifier 28 and three terminal bidirectional thyristor 26 are parallel between two node A, B.Alternating current between two node A, B is converted to low-voltage DC by rectifier 28, is preferably between 3 volts to 18 volts.Rectifier 28 comprises the first resistance R1 and the full-wave rectification bridge be series between two node A, B.First resistance R1 can be used as reducing transformer, described full-wave rectification bridge comprises two rectification branch roads in parallel, one of them rectification branch road comprises the first diode D1 and the 3rd diode D3 of differential concatenation, another rectification branch road comprises voltage stabilizing didoe Z2 and the 4th voltage stabilizing didoe Z4 of differential concatenation, the tie point of the negative electrode of described first diode D1 and the negative electrode of the 3rd diode D3 forms the high voltage output C of rectifier 28, and the tie point of the anode of the second voltage stabilizing didoe Z2 and the anode of the 4th voltage stabilizing didoe Z4 forms the low voltage output D of rectifier 28.The power positive end of two output C and D difference link position transducers 20 and power supply negative terminal.ON-OFF control circuit 30 comprises the 5th diode D5 between the output H1 and the control pole G of controllable bidirectional alternating-current switch 26 of position transducer 20 of the 3rd resistance R3, the 4th resistance R4 and differential concatenation and the 6th diode D6.The negative electrode output H1 of link position transducer and the control pole G of controllable bidirectional alternating-current switch respectively of the 5th diode D5 and the 6th diode D6.3rd resistance R3 one end connects the high voltage output C of rectifier, and the other end connects the tie point of the anode of the 5th diode D5 and the 6th diode D6.The two ends of the 4th resistance R4 connect the negative electrode of the 5th diode D5 and the 6th diode D6 respectively.
Fig. 8 illustrates the another kind of embodiment of motor circuit in Fig. 2.Distinguish part with previous embodiment to be, in the rectifier of Fig. 8, replaced voltage stabilizing didoe Z2 and Z4 in Fig. 7 by general-purpose diode D2 and D4.In addition, in Fig. 8 rectifier 28 two output C, D between be connected to voltage stabilizing didoe Z7 as pressurizer.
Fig. 9 illustrates the another kind of embodiment of motor circuit in Fig. 2.Wherein, the stator winding 16 of motor and AC power 24 are series between two pins 21 of integrated circuit 18.Two node A, B are connected with two pins 21 respectively.First anode T2 and the second plate T1 of three terminal bidirectional thyristor 26 are connected two node A, B respectively.Rectifier 28 and three terminal bidirectional thyristor 26 are parallel between two node A, B.Alternating current between two node A, B is converted to low-voltage DC by rectifier 28, is preferably between 3 volts to 18 volts.Rectifier 28 comprises the first resistance R1 and the full-wave rectification bridge be series between two node A, B.First resistance R1 can be used as reducing transformer, described full-wave rectification bridge comprises two rectification branch roads in parallel, one of them rectification branch road comprises two thyristor S1 and S3 of differential concatenation, and another rectification branch road comprises the second diode D2 and the 4th diode D4 of differential concatenation.The tie point of the negative electrode of two thyristor S1 and S3 forms the high voltage output C of rectifier 28, and the tie point of the anode of the second diode D2 and the anode of the 4th diode D4 forms the low voltage output D of rectifier 28.The positive and negative power supply terminal of two output C and D difference link position transducers 20.ON-OFF control circuit 30 comprises the 3rd resistance R3, NPN triode T6 and the 4th resistance R4 be series between the output H1 of the position transducer 20 and control pole G of controllable bidirectional alternating-current switch 26 and the 5th diode D5.The output H1 of the negative electrode link position transducer of the 5th diode D5.3rd resistance R3 one end connects the high voltage output C of rectifier, the output H1 of other end link position transducer.The output H1 of the base stage link position transducer of NPN triode T6, emitter connects the anode of the 5th diode D5, and collector electrode connects the high voltage output C of rectifier.
In the present embodiment, a reference voltage can be inputted, by terminal SC2 to the control end input control signal of S1 and S3 to the negative electrode of two thyristor S1 and S3 by terminal SC1.When the control signal that terminal SC2 inputs is high level, S1 and S3 conducting, when the control signal that terminal SC2 inputs is low level, S1 and S3 turns off.According to this configuration, under circuit normal operation, can make terminal SC2 input high level that S1 and S3 is switched between turn-on and turn-off by predetermined way.When needing when breaking down to stop motor, the control signal that terminal SC2 inputs can be become low level from high level, make S1 and S3 keep turning off, now, the all power-off of bidirectional thyristor 26, change-over circuit 28 and position transducer 20, ensure that whole circuit is in zero power consumption state.
Figure 10 illustrates the circuit theory diagrams of the single-phase permanent-magnet synchronous motor 10 according to another embodiment of the utility model.Wherein, the stator winding 16 of motor and an integrated circuit 18 are series at AC power 24 two ends.Be integrated with the drive circuit of motor in integrated circuit 18, this drive circuit can make motor all start along a fixed-direction when each energising.In the utility model, by the encapsulation of the drive circuit of motor in integrated circuits, can circuit cost be reduced, and improve the reliability of circuit.
In the utility model, visual actual conditions, rectifier, testing circuit, ON-OFF control circuit, controllable bidirectional alternating-current switch is all or part of in integrated circuits integrated, such as, can be as shown in Figure 3, only integrated detection circuit, ON-OFF control circuit, controllable bidirectional alternating-current switch in integrated circuits, and rectifier is located at integrated circuit external.
Again such as, can also be as depicted in the embodiments of figs. 10 and 11, reduction voltage circuit 32 and two-way controllable AC switch 26 are located at outside integrated circuit, and integrated rectifier (can only comprise rectifier bridge and not comprise dropping resistor or other voltage drop elements), testing circuit and ON-OFF control circuit in integrated circuits.In the present embodiment, partial low-power is in integrated circuits integrated, and be located at as the reduction voltage circuit 32 of high power portion and two-way controllable AC switch 26 outside integrated circuit.In another embodiment shown in Figure 12, also can be also in integrated circuits integrated by reduction voltage circuit 32, and two-way controllable AC switch is located at outside integrated circuit.
Along fixed-direction start when the single-phase permanent-magnet synchronous motor of the utility model embodiment can ensure that motor is energized at every turn and rotate.At blower fan if ventilating fan, lampblack absorber etc. and water pump are as in the application such as circulating pump, draining pump, the impeller/fan driven by rotor can be allowed to adopt flexure type blade, thus improve the efficiency of blower fan, water pump.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.Such as, drive circuit of the present utility model is not only applicable to single-phase permanent-magnet synchronous motor, is also applicable to the magneto of other types as single-phase DC brushless motor.
Claims (22)
1. an electric machine assembly, comprising can by the motor of an ac power supply and motor-drive circuit, described motor comprise stator and can relative stator rotate rotor, described stator comprises stator core and is wound in the stator winding on stator core, the controllable bidirectional alternating-current switch that described drive circuit comprises an integrated circuit and is connected with described integrated circuit, described controllable bidirectional alternating-current switch and described stator winding be series at be configured to be connected described AC power two terminals between, rectifier is integrated with in described integrated circuit, testing circuit and ON-OFF control circuit at least wherein two, described rectifier is for generation of the direct voltage being at least supplied to described testing circuit, described testing circuit is for detecting the polarity of the magnetic field of described rotor, described ON-OFF control circuit is configured to the polarity of the rotor field detected according to polarity and the described testing circuit of described AC power, control described controllable bidirectional alternating-current switch to switch between conducting and cut-off state in a predefined manner.
2. electric machine assembly as claimed in claim 1, it is characterized in that, described ON-OFF control circuit be configured to only described AC power be positive half period and testing circuit detect rotor field be the first polarity and described AC power be negative half-cycle and testing circuit detect rotor field for make the conducting of described controllable bidirectional alternating-current switch with the first opposite polarity second polarity chron.
3. electric machine assembly as claimed in claim 1, it is characterized in that, described drive circuit also comprises the reducing transformer be connected with described rectifier.
4. electric machine assembly as claimed in claim 1, it is characterized in that, described rectifier and reducing transformer are connected between two nodes and form a branch road, described two-way exchange switch and described branch circuit parallel connection.
5. electric machine assembly as claimed in claim 3, it is characterized in that, described drive circuit also comprises the pressurizer for stablizing described direct voltage, and described rectifier, reducing transformer, pressurizer, testing circuit, ON-OFF control circuit are all integrated in described integrated circuit.
6. electric machine assembly as claimed in claim 3, it is characterized in that, described rectifier is integrated in described integrated circuit, and described reducing transformer is located at described integrated circuit external.
7. electric machine assembly as claimed in claim 6, is characterized in that, being also integrated with the pressurizer for stablizing described direct voltage in described integrated circuit.
8. the electric machine assembly as described in any one of claim 1 to 7, is characterized in that, described controllable bidirectional alternating-current switch is three terminal bidirectional thyristor.
9. the electric machine assembly as described in any one of claim 1 to 7, is characterized in that, is provided with Magnetic Sensor in described testing circuit, and described integrated circuit is installed near described rotor with the polarity of the magnetic field and the change that make rotor described in the perception of described Magnetic Sensor energy.
10. the electric machine assembly as described in any one of claim 1 to 7, is characterized in that, does not establish Magnetic Sensor in described testing circuit.
11. electric machine assemblies as described in any one of claim 1 to 7, is characterized in that, do not establish microprocessor in described drive circuit.
12. electric machine assemblies as described in any one of claim 1 to 7, it is characterized in that, described electric machine assembly does not establish printed circuit board (PCB).
13. electric machine assemblies as described in any one of claim 1 to 7, it is characterized in that, described motor is single-phase permanent-magnet synchronous motor, described rotor comprises at least one block permanent magnet, uneven magnetic circuit is formed between described stator and p-m rotor, make described p-m rotor when static its pole axis relative to distortion angle of stator, after described stator winding electrifying described rotor steady-state process with 60f/p circle/minute rotating speed constant-speed operation, wherein f is the frequency of described AC power, and p is the number of pole-pairs of described rotor.
14. 1 kinds for motor-driven integrated circuit, comprise: housing, the some pins stretched out from described housing and the ON-OFF control circuit be located on semiconductor chip, described semiconductor chip and ON-OFF control circuit are packaged in described housing, described ON-OFF control circuit is configured to the control signal of rotor field polarity information generation for controlling a two-way alternating-current switch conducting or cut-off according to described motor, to control the step mode of described motor.
15. integrated circuits as claimed in claim 14, is characterized in that, described semiconductor chip are also integrated with the testing circuit of the rotor field polarity for detecting described motor.
16. integrated circuits as claimed in claim 15, is characterized in that, described semiconductor chip is also integrated with the rectifier that can produce the direct voltage being at least supplied to described testing circuit.
17. integrated circuits as claimed in claim 16, is characterized in that, described semiconductor chip being also integrated with the pressurizer for stablizing described direct voltage.
18. integrated circuits as claimed in claim 14, it is characterized in that, described two-way exchange switch is encapsulated in described housing.
19. integrated circuits as claimed in claim 14, is characterized in that, do not establish microprocessor in described integrated circuit.
20. integrated circuits as described in any one of claim 14 to 19, it is characterized in that, the pin of described integrated circuit is no more than four.
21. 1 kinds of pumps, comprising the pump case with pump chamber, the entrance and exit communicated with described pump chamber, being rotatably located at impeller in described pump chamber and for driving the electric machine assembly of described impeller, it is characterized in that, described electric machine assembly has the feature as described in any one of claim 1 to 13.
22. 1 kinds of blower fans, comprise flabellum and for driving the electric machine assembly of described flabellum, it is characterized in that, described electric machine assembly has the feature as described in any one of claim 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520594368.5U CN204993125U (en) | 2015-08-07 | 2015-08-07 | Motor element , integrated circuit who is used for motor drive , fan and pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520594368.5U CN204993125U (en) | 2015-08-07 | 2015-08-07 | Motor element , integrated circuit who is used for motor drive , fan and pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204993125U true CN204993125U (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520594368.5U Expired - Fee Related CN204993125U (en) | 2015-08-07 | 2015-08-07 | Motor element , integrated circuit who is used for motor drive , fan and pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204993125U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107251405A (en) * | 2014-08-08 | 2017-10-13 | 德昌电机(深圳)有限公司 | Electric machine assembly and for motor-driven integrated circuit |
| CN108075696A (en) * | 2016-11-15 | 2018-05-25 | 德昌电机(深圳)有限公司 | Motor and motor-drive circuit |
| CN109672373A (en) * | 2017-08-25 | 2019-04-23 | 德昌电机(深圳)有限公司 | Motor and its driving circuit and driving method |
-
2015
- 2015-08-07 CN CN201520594368.5U patent/CN204993125U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107251405A (en) * | 2014-08-08 | 2017-10-13 | 德昌电机(深圳)有限公司 | Electric machine assembly and for motor-driven integrated circuit |
| CN108075696A (en) * | 2016-11-15 | 2018-05-25 | 德昌电机(深圳)有限公司 | Motor and motor-drive circuit |
| CN108075696B (en) * | 2016-11-15 | 2021-08-06 | 德昌电机(深圳)有限公司 | Motor and motor drive circuit |
| CN109672373A (en) * | 2017-08-25 | 2019-04-23 | 德昌电机(深圳)有限公司 | Motor and its driving circuit and driving method |
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