CN110932648A - Motor driving system with power factor correction - Google Patents

Motor driving system with power factor correction Download PDF

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Publication number
CN110932648A
CN110932648A CN201911406922.1A CN201911406922A CN110932648A CN 110932648 A CN110932648 A CN 110932648A CN 201911406922 A CN201911406922 A CN 201911406922A CN 110932648 A CN110932648 A CN 110932648A
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CN
China
Prior art keywords
motor
factor correction
power factor
excitation
power
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Pending
Application number
CN201911406922.1A
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Chinese (zh)
Inventor
沈磊
宣俊杰
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Hangzhou Dianzi University
Hangzhou Electronic Science and Technology University
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Hangzhou Electronic Science and Technology University
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Application filed by Hangzhou Electronic Science and Technology University filed Critical Hangzhou Electronic Science and Technology University
Priority to CN201911406922.1A priority Critical patent/CN110932648A/en
Publication of CN110932648A publication Critical patent/CN110932648A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/26—Power factor control [PFC]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)

Abstract

The invention relates to the field of power electronics, and discloses a motor driving system with power factor correction, which comprises: the power factor correction circuit comprises a rectification circuit, a power factor correction circuit, a motor driving circuit and a motor; the excitation winding in the motor is multiplexed as the inductance of the power factor correction circuit; the motor excitation winding provides a magnetic field for the motor and is also used as an energy buffer inductor of the power factor correction circuit, so that the motor driving system with the power factor correction provided by the invention can reduce the number of passive electric elements, save the production cost, improve the power density of a motor control system and improve the stability of the system.

Description

Motor driving system with power factor correction
Technical Field
The invention relates to the field of power electronics, in particular to a motor driving system with power factor correction.
Background
Corresponding power quality standard (such as IEC 61000-3-2) is provided at home and abroad, and limit values of reactive current and harmonic current injected into a power grid by electric equipment are defined. For an ultra-low power speed regulating system, the generated harmonic current and reactive current are small, and most of the harmonic current and reactive current accord with relevant specifications. However, as the power of the plant increases, so does the reactive and harmonic current content. Measures must be taken to reduce the harmful current components and to ensure that the equipment complies with the relevant power quality specifications. Currently, a Power Factor Corrector (single-phase PFC circuit) is a widely adopted scheme for solving the above problems. The traditional single-phase PFC circuit needs an independent inductor as a necessary energy buffer element in the operation process, the inductor increases the volume and the weight of the system, increases extra loss, reduces the efficiency of the system and simultaneously improves the cost of the system. At present, a motor driving system composed of a single-phase PFC circuit and a motor driving circuit transmits additional power to the ground before a front-stage main switch of the single-phase PFC circuit performs switching for power factor correction, thereby reducing switching loss generated during the switching for power factor correction; or the driving scheme of the motor driving circuit is improved to improve the power density of the whole set of motor driving system; or a filter circuit is added to filter the power supply, so that various interferences are eliminated and the cleanness of the power supply is ensured. These improvements to the motor drive system are not mentioned with respect to coupling power devices. The advantages of the coupled power device are that: the number of devices is reduced, the stability of the system is improved, the production cost is saved, and the power density of the motor control system is improved.
Disclosure of Invention
Aiming at the problem that the improvement of a motor driving system consisting of a single-phase power factor correction circuit and a motor driving circuit at present is lack of a coupling power device, the invention provides the motor driving system with the power factor correction, a shared magnetic element provides a magnetic field for a motor, and the shared magnetic element is also used as an inductor of the power factor correction circuit, and the power factor correction circuit and the motor simultaneously utilize the shared magnetic element to realize respective functions so as to form a truly functional integrated motor driving system. The specific technical scheme is as follows:
a motor drive system with power factor correction, comprising: the power factor correction circuit is connected with the motor driving power converter and the electric excitation motor; the excitation winding of the electric excitation motor is multiplexed as the inductance of the power factor correction circuit; the excitation winding also provides an energy buffer function for the power factor correction circuit while establishing a magnetic field for the electrically excited motor.
Furthermore, the input end of the rectifying circuit is connected to an alternating current power supply, the output end of the rectifying circuit is connected with the input end of the power factor correction circuit, the output end of the power factor correction circuit is connected with the input end of the motor driving circuit, the inductance port of the power factor correction circuit is connected with the excitation winding of the electrically excited motor, and the output end of the motor driving circuit is connected with the armature of the electrically excited motor.
Further, the motor driving system with power factor correction is characterized in that an excitation winding of the electrically excited motor is multiplexed as an inductor of a power factor correction circuit, and the multiplexing comprises partial multiplexing and complete multiplexing; a partial multiplexing finger; all multiplexing means that all excitation windings of the motor are used as energy buffer inductors of the power factor correction circuit.
Further, the motor driving system with power factor correction is characterized in that a part of excitation windings of the partially multiplexed motor is used as an energy buffer inductor of the power factor correction circuit, and other part of excitation windings are connected with the motor in a series excitation mode, a parallel excitation mode, an other excitation mode and the like.
Further, the motor driving system with power factor correction is characterized in that all the excitation windings of the all-multiplexing-finger motor are used as energy buffering inductors of the power factor correction circuit.
Further, the motor driving system with power factor correction is characterized in that the electrically excited motor comprises a direct current brush electrically excited motor, an alternating current excited motor and an alternating current mixed excited motor.
Further, the motor driving system with power factor correction is characterized in that the alternating current excitation motor completely establishes a motor magnetic field by an excitation winding, and comprises a single-phase and multi-phase electric excitation magnetic flux switching motor, an electric excitation synchronous motor, a stator electric excitation motor, an electric excitation variable reluctance motor, an electric excitation magnetic field modulation motor, an electric excitation vernier motor and an electric excitation switch flux linkage motor.
Further, the motor driving system with power factor correction is characterized in that a part of magnetic field of the alternating current hybrid excitation motor is established by a magnet, and a part of magnetic field is established by an excitation winding; the hybrid excitation magnetic flux switching motor comprises a single-phase and multi-phase hybrid excitation magnetic flux switching motor, a hybrid excitation synchronous motor, a stator hybrid excitation motor, a hybrid excitation variable reluctance motor, a hybrid excitation magnetic field modulation motor, a hybrid excitation vernier motor and a hybrid excitation switch flux linkage motor.
Further, the motor driving system with power factor correction is characterized in that the motor driving power converter comprises a full-bridge power converter, a multi-level power converter and a DC-DC power converter, wherein the full-bridge power converter is used for driving a direct-current brush electric excitation motor; and single-phase and multi-phase bi-level converters and multi-level converters for driving the alternating current excited motor and the alternating current hybrid excited motor.
Further, the motor driving system with power factor correction is characterized in that the power factor correction circuit comprises a Boost power converter, a Buck-Boost power converter, a Cuk power converter, a Sepic power converter, a Zeta power converter, a forward power converter, a flyback power converter, a forward and reverse power converter, a Z-source converter and derivative circuits thereof.
Further, the motor driving system with power factor correction is characterized in that the rectification circuit comprises single-phase, three-phase and multi-phase half-wave uncontrolled rectification, full-wave uncontrolled rectification, half-wave controllable rectification and full-wave controllable rectification.
The invention has the beneficial effects that:
the motor driving system with the power factor correction function can reduce the number of devices, save the production cost, improve the power density of a motor control system and improve the stability of the system.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a first motor driving system with power factor correction according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second motor driving system with power factor correction according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a third motor driving system with power factor correction according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present invention more clearly understood, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
As shown in fig. 1, a motor driving system with power factor correction according to an embodiment includes: a rectifier circuit 11, a power factor correction circuit 12, a motor drive circuit 13, and a motor 14. The input end of the rectifying circuit 11 is connected to an alternating current power supply AC, and the output end is connected to the power factor correction circuit 12; the power factor correction circuit 12 implements a power factor correction function. The output end of the power factor correction circuit 12 is connected to the motor driving circuit 13, and the motor driving circuit 13 drives the motor 14 to rotate. The excitation inductance of the electric machine 14 is coupled to the energy buffer inductance of the power factor correction circuit 12. The whole set of motor driving system with power factor correction realizes the rotation of the driving motor while realizing the power factor correction.
As shown in fig. 2, the second embodiment provides another motor driving system with power factor correction. The field winding of the hybrid field ac machine M is inductively coupled to the energy buffer of the pfc circuit at L1. The diodes D1, D2, D3, and D4 constitute a full bridge rectifier circuit. The diode D1 and the diode D4 are connected in series, the diode D2 and the diode D3 are connected in series, the diode D3 and the cathode of the diode D4 are connected and serve as the anode of the rectified output voltage, and the diode D1 and the anode of the diode D2 are connected and serve as the cathode of the rectified output voltage; one pole of the alternating current power AC is connected between the diode D1 and the diode D4, and the other pole of the alternating current power AC is connected between the diode D2 and the diode D3.
The field winding L1, the MOSFET Q1, the diode D5 and the capacitor C1 form a Boost circuit as the power factor correction circuit. One end of the excitation winding L1 is connected to the positive electrode of the output of the rectification circuit, the anode of the diode D1 and the drain of the power switch tube MOSFET Q1 are connected together and are connected to the other end of the excitation winding L1, one end of the capacitor C1 is connected to the cathode of the diode D1, and the other end of the capacitor C1 and the source of the power switch tube MOSFET Q1 are connected to the negative electrode of the output of the rectification circuit.
The MOSFETs Q2, Q3, Q4, Q5, Q6, and Q7 constitute a three-phase inverter circuit. The power switch tube MOSFET Q2 and the power switch tube MOSFET Q5 are connected in series, the power switch tube MOSFET Q3 and the power switch tube MOSFET Q6 are connected in series, the power switch tube MOSFET Q4 and the power switch tube MOSFET Q7 are connected in series and then connected in parallel two by two to form a three-phase inverter circuit, and inverted three-phase signals are respectively output from a node between the power switch tube MOSFET Q2 and the power switch tube MOSFET Q5, a node between the power switch tube MOSFET Q3 and the power switch tube MOSFET Q6, and a node between the power switch tube MOSFET Q4 and the power switch tube MOSFET Q7 and are connected to the hybrid excitation alternating current motor.
And the AC side outputs alternating current to the full-bridge rectifying circuit to supply power to the Boost circuit. And controlling the on and off of the MOSFET Q1 to realize the functions of power factor correction of a Boost circuit and outputting a stable voltage. The Boost circuit outputs stable voltage and provides stable voltage for the three-phase inverter circuit. The variable frequency speed regulation of the hybrid excitation alternating current motor is realized by controlling the on and off of the MOSFETs Q2, Q3, Q4, Q5, Q6 and Q7.
As shown in fig. 3, the third motor driving system with power factor correction is provided in the third embodiment. The excitation winding of the direct current brush motor is composed of two parts: a field winding L1 and a field winding L2. Wherein the excitation winding L1 is inductively coupled to an energy buffer of a power factor correction circuit, and the excitation winding L2 is supplied with a stable voltage by the power factor correction circuit. The diodes D1, D2, D3, and D4 constitute a full bridge rectifier circuit.
The diode D1 and the diode D4 are connected in series, the diode D2 and the diode D3 are connected in series, the diode D3 and the cathode of the diode D4 are connected and serve as the anode of the output voltage of the rectifying circuit, and the diode D1 and the anode of the diode D2 are connected and serve as the cathode of the rectified output voltage; one pole of the alternating current power AC is connected between the diode D1 and the diode D4, and the other pole of the alternating current power AC is connected between the diode D2 and the diode D3.
The winding L1, the MOSFET Q1, the diode D5 and the capacitor C1 form a Buck-Boost circuit as the power factor correction circuit. The drain electrode of the MOSFET Q1 is connected with the output positive electrode of the rectifying circuit, and the source electrode of the MOSFET Q1 is connected with the cathode of the diode D5 and one end of the excitation winding L1. The anode of the diode D5 is connected to one end of the capacitor C1. The other end of the capacitor C1 is connected to the other end of the excitation winding L1. Two ends of the excitation winding L2 are respectively connected with two ends of the capacitor C1.
MOSFETs Q2, Q3, Q4, Q5 constitute an H-bridge circuit. The power switch tube MOSFET Q2 and the power switch tube MOSFET Q5 are connected in series, the power switch tube MOSFET Q3 and the power switch tube MOSFET Q6 are connected in series and then connected in parallel to form an H-bridge circuit, and the H-bridge circuit is connected to the direct-current brush motor through the node between the power switch tube MOSFET Q2 and the power switch tube MOSFET Q5 and the node between the power switch tube MOSFET Q3 and the power switch tube MOSFET Q6.
And the AC side outputs alternating current to the full-bridge rectifying circuit to supply power to the Buck-Boost circuit. And the function of power factor correction and stable voltage output of the Buck-Boost circuit is realized by controlling the on and off of the MOSFET Q1. The Buck-Boost circuit outputs a stable voltage to provide the H-bridge circuit and the excitation winding L2 with a stable voltage. The speed regulation control of the direct current brush motor is realized by controlling the on and off of the MOSFETs Q2, Q3, Q4 and Q5.

Claims (10)

1. A motor drive system with power factor correction, comprising: the power factor correction circuit is connected with the motor driving power converter and the electric excitation motor; the excitation winding of the electric excitation motor is multiplexed as the inductance of the power factor correction circuit; the excitation winding also provides an energy buffer function for the power factor correction circuit while establishing a magnetic field for the electric excitation motor;
the input end of the rectification circuit is connected to an alternating current power supply, the output end of the rectification circuit is connected with the input end of the power factor correction circuit, the output end of the power factor correction circuit is connected with the input end of the motor driving circuit, an inductance port of the power factor correction circuit is connected with an excitation winding of the electrically excited motor, and the output end of the motor driving circuit is connected with an armature of the electrically excited motor.
2. A motor drive system with power factor correction as defined in claim 1 wherein the field winding of said electrically excited motor is multiplexed as the inductance of the power factor correction circuit, including partial multiplexing and full multiplexing; a partial multiplexing finger; all multiplexing means that all excitation windings of the motor are used as energy buffer inductors of the power factor correction circuit.
3. The motor driving system with power factor correction according to claim 2, wherein the partial multiplexing means that a part of the excitation winding of the motor is used as an energy buffer inductor of the power factor correction circuit, and the other part of the excitation winding is connected with the motor in a series excitation mode, a parallel excitation mode, an alternative excitation mode and the like.
4. A motor drive system with power factor correction as set forth in claim 2 wherein said total reuse means that all field windings of the motor act as energy snubber inductors for the power factor correction circuit.
5. A motor drive system with power factor correction as set forth in claim 1 wherein said electrically excited motor comprises a dc brushed electrically excited motor, an ac hybrid excited motor.
6. A motor drive system with power factor correction as claimed in claim 5 wherein said AC-excited motor creates a motor field entirely from the excitation windings, including single and multi-phase electrically excited flux switching motors, electrically excited synchronous motors, stator electrically excited motors, electrically excited variable reluctance motors, electrically excited field modulation motors, electrically excited vernier motors, electrically excited switched reluctance motors.
7. A motor drive system with power factor correction as set forth in claim 5 wherein said AC hybrid excitation motor has a portion of the magnetic field created by the magnets and a portion of the magnetic field created by the field winding; the hybrid excitation magnetic flux switching motor comprises a single-phase and multi-phase hybrid excitation magnetic flux switching motor, a hybrid excitation synchronous motor, a stator hybrid excitation motor, a hybrid excitation variable reluctance motor, a hybrid excitation magnetic field modulation motor, a hybrid excitation vernier motor and a hybrid excitation switch flux linkage motor.
8. A motor drive system with power factor correction as set forth in claim 1 wherein said motor drive power converter comprises a full bridge power converter, a multilevel power converter and a DC-DC power converter for driving a DC brushed electrically excited motor; and single-phase and multi-phase bi-level converters and multi-level converters for driving the alternating current excited motor and the alternating current hybrid excited motor.
9. A motor drive system with power factor correction as set forth in claim 1 wherein said power factor correction circuit comprises a Boost power converter, a Buck-Boost power converter, a Cuk power converter, a Sepic power converter, a Zeta power converter, a forward power converter, a flyback power converter, a forward flyback power converter, a Z-source converter, and their derivatives.
10. The motor drive system with power factor correction of claim 1, wherein said rectifying circuits comprise single phase, three phase and multiphase half-wave uncontrolled rectification, full-wave uncontrolled rectification, half-wave controlled rectification and full-wave controlled rectification.
CN201911406922.1A 2019-12-31 2019-12-31 Motor driving system with power factor correction Pending CN110932648A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114337459A (en) * 2021-12-31 2022-04-12 西比里电机技术(苏州)有限公司 Driving topology circuit applicable to two-phase switched reluctance motor with wide power supply voltage

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CN102347725A (en) * 2011-06-16 2012-02-08 南京航空航天大学 Controllable single-phase bridge rectifying generating system with doubly salient electromagnetic motor
WO2014206719A3 (en) * 2013-06-24 2015-03-19 Electrolux Appliances Aktiebolag Electric household appliance with an electronic control device for controlling an universal electric motor
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Publication number Priority date Publication date Assignee Title
CN114337459A (en) * 2021-12-31 2022-04-12 西比里电机技术(苏州)有限公司 Driving topology circuit applicable to two-phase switched reluctance motor with wide power supply voltage
CN114337459B (en) * 2021-12-31 2023-12-08 西比里电机技术(苏州)有限公司 Driving topology circuit suitable for two-phase switch reluctance motor with wide power supply voltage

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Application publication date: 20200327