CN115333212A - Switched reluctance motor circuit integrating multiple charging modes and control method thereof - Google Patents
Switched reluctance motor circuit integrating multiple charging modes and control method thereof Download PDFInfo
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- CN115333212A CN115333212A CN202210956814.7A CN202210956814A CN115333212A CN 115333212 A CN115333212 A CN 115333212A CN 202210956814 A CN202210956814 A CN 202210956814A CN 115333212 A CN115333212 A CN 115333212A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- 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
- H02M1/4258—Arrangements for improving power factor of AC input using a single converter stage both for correction of AC input power factor and generation of a regulated and galvanically isolated DC output voltage
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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
- 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]
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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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/08—Reluctance motors
- H02P25/092—Converters specially adapted for controlling reluctance motors
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses a switched reluctance motor circuit integrating multiple charging modes and a control method thereof, relating to the technical field of electronic driving; the photovoltaic charging circuit comprises an asymmetric half-bridge circuit, a PFC (power factor correction) rectifying circuit and a photovoltaic charging circuit; the asymmetric half-bridge circuit is used for realizing the driving function of the reluctance motor; the single-phase PFC rectifying circuit is used for realizing a single-phase commercial power charging function; the photovoltaic charging circuit is used for realizing a photovoltaic charging function, the integration level of the multi-port conversion driving topology is high, various charging functions can be integrated without changing the topology of the traditional half-bridge circuit and adding a pair of interlocking relays and a diode, and compared with the traditional motor driving, the new topology does not influence the motor driving efficiency; the topology can be directly used for a switched reluctance motor driving topology, high-efficiency charging of commercial power can be realized without an additional circuit, and the solar maximum power tracking charging can be realized by assisting a photovoltaic panel, so that the size and cost of a controller are saved, and the energy and economic benefits are improved.
Description
Technical Field
The invention relates to the technical field of electronic driving, in particular to a switched reluctance motor circuit integrating multiple charging modes and a control method thereof.
Background
The switched reluctance motor has the advantages of stability, simple structure, high reliability, wide speed regulation range and wider application occasions; when the traditional switched reluctance motor drives a vehicle to run, the battery is basically used for supplying power, and when the electric quantity of the battery is exhausted and is in a feeding mode, the battery needs to be taken out or an external converter needs to be charged, so that the use is inconvenient, and the use cost is increased due to the need of additional power conversion equipment; furthermore, the converter cannot be adapted to batteries of all specifications and models, and the cost of the charging equipment needs to be further increased for wide adaptation range; with the need for further increase of the market of the electric vehicle, when the electric vehicle is in a power shortage state, no charging equipment is arranged around the electric vehicle or the use requirement is large, a large amount of time is spent for queuing, and the vehicle using experience of a vehicle owner is influenced to a certain extent; meanwhile, because the battery and the charging equipment are not usually produced by the same manufacturer, the charging efficiency cannot be guaranteed due to the fact that the battery and the charging equipment are not matched, and serious accidents such as burning of the charging equipment or spontaneous combustion of the battery can be even caused in serious cases.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a switched reluctance motor circuit integrating multiple charging modes and a control method thereof, and solves the problems in the prior art.
In order to realize the purpose, the invention is realized by the following technical scheme:
a switched reluctance motor circuit integrating multiple charging modes comprises: the photovoltaic charging circuit comprises an asymmetric half-bridge circuit, a PFC (power factor correction) rectifying circuit and a photovoltaic charging circuit;
an asymmetric half-bridge circuit comprising: one end of a relay KP1 of the asymmetric half-bridge circuit is connected with the anode of the first storage battery Vbat; the other end of the relay KP1 is connected with a collector of a power switch tube Q1, a collector of a power switch tube Q3, a collector of a power switch tube Q5, a cathode of a diode D3, a collector of a power switch tube Q7, a cathode of the diode D5, an anode of a capacitor C2 and an anode of a first photovoltaic cell panel PV; an emitting electrode of the power switch tube Q1 is connected with one end of the winding L1 and a collector electrode of the Q2; the other end of the winding L1 is connected with an emitting electrode of the power switch tube Q3 and a collector electrode of the power switch tube Q4; the cathode of the first storage battery Vbat is connected with the emitter of the power switch tube Q2, the emitter of the power switch tube Q4, the emitter of the power switch tube Q6, the emitter of the power switch tube Q8, the anode of the diode D2, the anode of the diode D4, the cathode of the capacitor C2 and the cathode of the first photovoltaic cell panel PV; an emitter of the power switch tube Q5 is connected with a cathode of the diode D2 and one end of the winding L2; the anode of the diode D3, the collector of the power switch tube Q6 and the other end of the winding L2; an emitter of the power switch tube Q7 is connected with a cathode of the diode D4 and one end of the winding L3; one end of the winding L3 is connected; the other end of the winding L3 is connected with the anode of the diode D5 and the collector of the power switch tube Q8;
the PFC rectifier circuit includes: the positive electrode of a second storage battery Vbat of the PFC rectification circuit is connected with the positive electrode of the capacitor C1 and one end of the relay KP 2; the collector of the power switch tube Q3 is connected with the cathode of the diode D3 and the collector of the power switch tube Q7; the other end of the relay KP2 is connected with the cathode of the diode D1; the anode of the diode D1 is connected with one end of the winding L1 and the collector of the power switch tube Q2; the other end of the winding L1 is connected with an emitting electrode of the power switch tube Q3 and a collector electrode of the power switch tube Q4; the cathode of the second storage battery Vbat is connected with the cathode of the capacitor C1, the emitter of the power switch tube Q2, the emitter of the power switch tube Q4, the emitter of the power switch tube Q6 and the anode of the diode D4; the anode of the diode D3 is connected with the collector of the power switch tube Q6 and one end of a single-phase mains supply end AC; the other end of the single-phase commercial power end AC is connected with an emitting electrode of a power switch tube Q7 and a cathode of a diode D4;
the photovoltaic charging circuit includes: the positive electrode of a third storage battery Vbat of the photovoltaic charging circuit is connected with the positive electrode of the capacitor C1 and one end of the relay KP 2; the collector electrode of the power switch tube Q3 is connected with the anode of the capacitor C2 and the anode of the second photovoltaic cell panel PV; the other end of the relay KP2 is connected with the cathode of the diode D1; the anode of the diode D1 is connected with the collector of the power switch tube Q2 and one end of the winding L1; the other end of the winding L1 is connected with an emitting electrode of a power switch tube Q3 and a collecting electrode of a power switch tube Q4; and the negative electrode of the third storage battery Vbat is connected with the cathode of the capacitor C1, the emitter of the power switch tube Q2, the emitter of the power switch tube Q4, the cathode of the capacitor C2 and the negative electrode of the second photovoltaic cell panel PV.
Further, the PFC rectification circuit is used for charging a battery by externally connecting alternating current at a single-phase commercial power end under a PFC working mode;
the photovoltaic charging circuit is used for charging the battery side through a circuit formed by a switch tube of a driver on the side of the photovoltaic battery panel in a photovoltaic charging mode;
the asymmetric half-bridge circuit is used for realizing the speed regulation of the motor by topologically distributing the current of three windings of the switched reluctance motor in a motor driving mode.
Further, the working state of the motor driving mode comprises:
motor drive mode state 1: the relay KP1 is controlled to be closed, the power switch tubes Q1 and Q4 are conducted, and other relays and the power switch tubes in the topology are in a turn-off state; at the moment, the first storage battery Vbat and the first photovoltaic panel PV provide energy for the winding L1, and current flows out of the first storage battery Vbat and the first photovoltaic panel, passes through the relay KP1, the power switch tube Q1, the winding L1 and the power switch tube Q4, and finally flows back to the first storage battery Vbat and the first photovoltaic panel PV to form a loop;
motor drive mode state 2: under the condition of a motor driving mode state 1, a power switch tube Q4 is closed, and at the moment, current on a winding flows through a freewheeling diode of a power switch tube Q3 and then flows back to a winding L1 through the power switch tube Q1; meanwhile, the current of the first photovoltaic cell panel PV flows into the first storage battery Vbat through the control relay KP1 and then flows back to the negative side of the first photovoltaic cell panel to form a loop;
motor drive mode state 3: under the condition of the motor driving mode state 2, the power switch tube Q1 is closed, at the moment, the current on the winding passes through a freewheeling diode of the power switch tube Q3, then flows into the first storage battery Vbat through the control relay KP1, and then the current continuously passes through the freewheeling diode of the power switch tube Q2 to form a loop; meanwhile, the current of the first photovoltaic cell panel PV flows into the first storage battery Vbat through the control relay KP1 and then flows back to the negative side of the first photovoltaic cell panel to form a loop.
Further, the operating states of the PFC operating mode include:
PFC operating mode state 1: the relay KP2 is controlled to be closed, the power switch tubes Q2 and Q3 are conducted, and other relays and the power switch tubes in the topology are in a turn-off state; at the moment, the commercial power energy passes through a rectifier bridge formed by freewheeling diodes of the power switch tubes Q6 and Q7 and the diodes D3 and D4, and then the current flows back to the negative side of the rectifier bridge to form a loop after passing through the power switch tube Q3, the winding L1 and the power switch tube Q2;
PFC operating mode state 2: under the condition of a PFC working mode state 1, turning off power switching tubes Q2 and Q3; at this time, the current on the winding L1 flows to the second battery Vbat through the diode D1 and the control relay KP2, and then flows back to the winding L1 through the freewheeling diode of the power switch tube Q4 to form a loop.
Further, the operating state of the photovoltaic charging mode includes:
photovoltaic charge mode state 1: the relay KP2 is controlled to be closed, the power switch tubes Q2 and Q3 are conducted, and other relays and the power switch tubes in the topology are in a turn-off state; at the moment, the energy of the second photovoltaic cell panel PV flows back to the negative side of the second photovoltaic cell panel PV to form a loop through the power switch tube Q3, the winding L1 and the power switch tube Q2;
photovoltaic charge mode state 2: under the condition of the photovoltaic charging mode state 1, the power switch tubes Q2 and Q3 are closed; at the moment, the current on the winding L1 flows to the third storage battery Vbat through the diode D1 and the control relay KP2, and then flows back to the winding L1 through the freewheeling diode of the power switch tube Q4 to form a loop.
The invention provides a switched reluctance motor circuit integrating multiple charging modes and a control method thereof, and the switched reluctance motor circuit has the following beneficial effects:
the switched reluctance motor circuit integrating multiple charging modes and the control method thereof realize multiple charging methods of a battery on the basis of the original asymmetric half-bridge circuit, realize the charging function without increasing the cost, can increase the endurance capacity of the battery, enhance the power density of the controller, can perform charging matching according to the model of the battery, improve the charging efficiency and simultaneously prolong the service life of the battery.
Drawings
FIG. 1 is a schematic diagram of a switched reluctance motor circuit topology integrating multiple charging modes according to the present invention;
FIG. 2 shows an equivalent circuit of a multi-port transition drive topology in a motor drive mode of operation;
FIG. 3 shows an equivalent circuit of the multi-port conversion driving topology in the PFC operation mode;
FIG. 4 shows an equivalent circuit of the multi-port transition drive topology in the photovoltaic charging mode;
fig. 5 shows the current flow of the first mode of operation of the asymmetric half-bridge circuit in the drive motor mode;
fig. 6 shows the current flow of the asymmetric half-bridge circuit in the second operating mode in the driving motor mode;
fig. 7 shows the current flow of the asymmetric half-bridge circuit in the third operating mode in the driving motor mode;
fig. 8 shows the current flowing direction of the PFC rectifier circuit in the first operation mode in the PFC operation mode;
fig. 9 shows the current flowing direction of the PFC rectifier circuit in the second operation mode in the PFC operation mode;
fig. 10 shows the current flow of the photovoltaic charging circuit in the first operating mode in the photovoltaic charging mode;
fig. 11 shows the current flow of the photovoltaic charging circuit in the second operation mode in the photovoltaic charging mode.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
A switched reluctance motor circuit integrated with multiple charging modes comprises a control relay KP1, a control relay KP2, a power switch tube Q1, a power switch tube Q2, a power switch tube Q3, a power switch tube Q4, a power switch tube Q5, a power switch tube Q6, a power switch tube Q7, a power switch tube Q8, a storage battery Vbat, a diode D1, a diode D2, a diode D3, a diode D4, a diode D5, a winding L1, a winding L2, a winding L3, a capacitor C1, a capacitor C2, a single-phase commercial power end AC and a photovoltaic cell panel PV; one end of the relay KP1 is connected with the anode of the storage battery Vbat, the anode of the capacitor C1 and one end of the relay KP 2; the other end of the relay KP1 is connected with a collector of a power switch tube Q1, a collector of a power switch tube Q3, a collector of a power switch tube Q5, a cathode of a diode D3, a collector of a power switch tube Q7, a cathode of the diode D5, an anode of a capacitor C2 and an anode of a photovoltaic cell panel PV; the other end of the relay KP2 is connected with the cathode of the diode D1; the anode of the diode D1 is connected with the emitter of the power switch tube Q1, the collector of the power switch tube Q2 and one end of the winding L1; the other end of the winding L1 is connected with an emitting electrode of the power switch tube Q3 and a collector electrode of the power switch tube Q4; the cathode of the storage battery Vbat is connected with the cathode of the capacitor C1, the emitter of the power switch tube Q2, the emitter of the power switch tube Q4, the emitter of the power switch tube Q6, the emitter of the power switch tube Q8, the anode of the diode D2, the anode of the diode D4, the cathode of the capacitor C2 and the cathode of the photovoltaic cell panel PV; an emitting electrode of the power switch tube Q5 is connected with a cathode of the diode D2 and one end of the winding L2; the anode of the diode D3 is connected with the collector of the power switch tube Q6, the other end of the winding L2 and one end of a single-phase commercial power end AC; the other end of the single-phase commercial power end AC is connected with an emitting electrode of a power switch tube Q7, a cathode of a diode D4 and one end of a winding L3; the other end of the winding L3 is connected with the anode of the diode D5 and the collector of the power switch tube Q8; when in use, L1 refers to a first phase winding of the 6/4 pole switched reluctance motor, L2 refers to a second phase winding of the 6/4 pole switched reluctance motor, and L3 refers to a third phase winding of the 6/4 pole switched reluctance motor; the emitter of the power switch tube Q1 is connected with the collector of the Q4 to form a first phase winding of the 6/4-pole switched reluctance motor, the emitter of the power switch tube Q5 is connected with the collector of the Q6 to form a second phase winding of the 6/4-pole switched reluctance motor, and the emitter of the power switch tube Q7 is connected with the collector of the Q8 to form a third phase winding of the 6/4-pole switched reluctance motor; furthermore, the power switch tube Q1, the power switch tube Q2, the power switch tube Q3, the power switch tube Q4, the power switch tube Q5, the power switch tube Q6, the power switch tube Q7 and the power switch tube Q8 may be MOS tubes or IGBT tubes according to the magnitude relation of the current and the voltage of the driving motor.
A switched reluctance motor circuit integrating multiple charging modes and a control method thereof comprise an asymmetric three-phase half-bridge circuit (shown in figure 2), a PFC rectifying circuit (shown in figure 3) and a photovoltaic charging circuit (shown in figure 4);
the asymmetric half-bridge circuit comprises a first storage battery Vbat, a control relay KP1, power switch tubes Q1-Q8, diodes D2-D5, windings L1-L3 and a capacitor C2; one end of a relay KP1 of the asymmetric half-bridge circuit is connected with the anode of the first storage battery Vbat; the other end of the relay KP1 is connected with a collector of a power switch tube Q1, a collector of a power switch tube Q3, a collector of a power switch tube Q5, a cathode of a diode D3, a collector of a power switch tube Q7, a cathode of the diode D5, an anode of a capacitor C2 and an anode of a first photovoltaic cell panel PV; an emitting electrode of the power switch tube Q1 is connected with one end of the winding L1 and a collector electrode of the Q2; the other end of the winding L1 is connected with an emitting electrode of the power switch tube Q3 and a collector electrode of the power switch tube Q4; the cathode of the first storage battery Vbat is connected with the emitter of the power switch tube Q2, the emitter of the power switch tube Q4, the emitter of the power switch tube Q6, the emitter of the power switch tube Q8, the anode of the diode D2, the anode of the diode D4, the cathode of the capacitor C2 and the cathode of the first photovoltaic cell panel PV; an emitter of the power switch tube Q5 is connected with a cathode of the diode D2 and one end of the winding L2; the anode of the diode D3, the collector of the power switch tube Q6 and the other end of the winding L2; an emitting electrode of the power switch tube Q7 is connected with a cathode of the diode D4 and one end of the winding L3; the other end of the winding L3 is connected to the anode of the diode D5 and the collector of the power switch Q8.
The PFC rectifying circuit comprises a second storage battery Vbat, a control relay KP2, a diode D1, diodes D3-D4, a winding L1, power switching tubes Q3-Q4, power switching tubes Q6-Q7, a single-phase commercial power end AC and a capacitor C1; the positive electrode of a second storage battery Vbat of the PFC rectification circuit is connected with the positive electrode of the capacitor C1 and one end of the relay KP 2; the collector of the power switch tube Q3 is connected with the cathode of the diode D3 and the collector of the power switch tube Q7; the other end of the relay KP2 is connected with the cathode of the diode D1; the anode of the diode D1 is connected with one end of the winding L1 and the collector of the power switch tube Q2; the other end of the winding L1 is connected with an emitting electrode of the power switch tube Q3 and a collector electrode of the power switch tube Q4; the cathode of the second storage battery Vbat is connected with the cathode of the capacitor C1, the emitter of the power switch tube Q2, the emitter of the power switch tube Q4, the emitter of the power switch tube Q6 and the anode of the diode D4; the anode of the diode D3 is connected with the collector of the power switch tube Q6 and one end of a single-phase mains supply end AC; the other end of the single-phase mains supply end AC is connected with an emitting electrode of the power switch tube Q7 and a cathode of the diode D4.
The photovoltaic charging circuit comprises a third storage battery Vbat, a control relay KP2, a diode D1, power switch tubes Q2-Q3, a capacitor C2 and a second photovoltaic cell panel PV; the positive electrode of a third storage battery Vbat of the photovoltaic charging circuit is connected with the positive electrode of the capacitor C1 and one end of the relay KP 2; the collector electrode of the power switch tube Q3 is connected with the anode of the capacitor C2 and the anode of the second photovoltaic cell panel PV; the other end of the relay KP2 is connected with the cathode of the diode D1; the anode of the diode D1 is connected with the collector of the power switch tube Q2 and one end of the winding L1; the other end of the winding L1 is connected with an emitting electrode of the power switch tube Q3 and a collector electrode of the power switch tube Q4; and the cathode of the third storage battery Vbat is connected with the cathode of the capacitor C1, the emitter of the power switch tube Q2, the emitter of the power switch tube Q4, the cathode of the capacitor C2 and the cathode of the second photovoltaic cell panel PV.
The L1 in the driving topology refers to a winding of a first phase of the 6/4-pole switched reluctance motor, an emitter of the power switch tube Q1 and a collector of the power switch tube Q1 are connected with one end of the winding of the first phase of the 6/4-pole switched reluctance motor, and an emitter of the power switch tube Q3 and a collector of the power switch tube Q4 are connected with the other end of the winding of the first phase of the 6/4-pole switched reluctance motor.
The L2 in the driving topology refers to a second phase winding of the 6/4-pole switched reluctance motor, an emitter of a power switch tube Q5 is connected with a cathode of a diode D2 and is connected with one end of the second phase winding of the 6/4-pole switched reluctance motor, and a collector of the power switch tube Q6 is connected with an anode of the diode D5 and is connected with the other end of the second phase winding of the 6/4-pole switched reluctance motor.
The L3 in the driving topology refers to a third phase winding of the 6/4 pole switched reluctance motor, an emitter of a power switch tube Q7 and a cathode of a diode D4 are connected with one end of a first phase winding of the 6/4 pole switched reluctance motor, and a collector of a power switch tube Q8 and an anode of a diode D5 are connected with the other end of the first phase winding of the 6/4 pole switched reluctance motor.
When the driving motor works in a mode, the topology works in an asymmetric half-bridge circuit mode; the relay KP1 is controlled to be opened, and the relay KP2 is controlled to be closed; the circuit is equivalent to an asymmetric half-bridge circuit, when the motor rotates, the power switch tube of the corresponding phase is opened at a proper time, so that current flows through the winding of the switched reluctance motor, and the current of the winding is controlled at a proper duty ratio, thereby achieving an ideal control effect.
In a mains supply charging mode, the topology works in a PFC (power factor correction) rectification circuit mode; the relay KP2 is controlled to be opened, and the relay KP1 is controlled to be closed; at this time, the driving signals of the power switch tube Q1, the power switch tube Q2, the power switch tube Q4, the power switch tube Q5, the power switch tube Q6, the power switch tube Q7 and the power switch tube Q8 are kept at low level in the mode; meanwhile, an AC port is connected with a mains supply, and the circuit is equivalent to a PFC (power factor correction) rectification circuit; by controlling the duty ratio of the power switch tube Q3, the mains current tracks the mains voltage to realize power factor correction, the reactive loss is reduced, and the charging efficiency is improved.
When the photovoltaic cell panel is in a charging mode, the topology works in a photovoltaic charging circuit mode; the relay KP2 is controlled to be opened, and the relay KP1 is controlled to be closed; at this time, the driving signals of the power switch tube Q1, the power switch tube Q4, the power switch tube Q5, the power switch tube Q6, the power switch tube Q7 and the power switch tube Q8 are kept at a low level in the mode; meanwhile, the photovoltaic array is connected into a topology, and the circuit becomes a photovoltaic charging circuit; the maximum power tracking control is realized by controlling the duty ratios of the power switching tubes Q2 and Q3 and selectively introducing an MPPT algorithm, so that the photovoltaic cell panel works at the maximum power point, and the efficient charging of the circuit is realized.
In the above embodiment, the driving signals of the power switch tube Q1, the power switch tube Q2, the power switch tube Q4, the power switch tube Q5, the power switch tube Q6, the power switch tube Q7 and the power switch tube Q8 are kept at low level in the mode, the power switch tube needs to drive signals, and the driving signals enter from the base electrode; the single-phase mains supply AC terminal is connected into the controller only in the mains supply charging mode, and the other two modes (the motor driving mode and the photovoltaic charging mode) are in the disconnected state.
Claims (5)
1. A switch reluctance motor circuit integrating multiple charging modes is characterized in that: comprises an asymmetric half-bridge circuit, a PFC rectifying circuit and a photovoltaic charging circuit,
the asymmetric half-bridge circuit comprises: one end of a relay KP1 of the asymmetric half-bridge circuit is connected with the anode of a first storage battery Vbat; the other end of the relay KP1 is connected with a collector of a power switch tube Q1, a collector of a power switch tube Q3, a collector of a power switch tube Q5, a cathode of a diode D3, a collector of a power switch tube Q7, a cathode of the diode D5, an anode of a capacitor C2 and an anode of a first photovoltaic cell panel PV; an emitting electrode of the power switch tube Q1 is connected with one end of the winding L1 and a collector electrode of the Q2; the other end of the winding L1 is connected with an emitting electrode of the power switch tube Q3 and a collector electrode of the power switch tube Q4; the cathode of the first storage battery Vbat is connected with the emitter of the power switch tube Q2, the emitter of the power switch tube Q4, the emitter of the power switch tube Q6, the emitter of the power switch tube Q8, the anode of the diode D2, the anode of the diode D4, the cathode of the capacitor C2 and the cathode of the first photovoltaic cell panel PV; an emitting electrode of the power switch tube Q5 is connected with a cathode of the diode D2 and one end of the winding L2; the anode of the diode D3, the collector of the power switch tube Q6 and the other end of the winding L2; an emitter of the power switch tube Q7 is connected with a cathode of the diode D4 and one end of the winding L3; the other end of the winding L3 is connected with the anode of the diode D5 and the collector of the power switch tube Q8;
the PFC rectification circuit includes: the positive electrode of a second storage battery Vbat of the PFC rectification circuit is connected with the positive electrode of the capacitor C1 and one end of the relay KP 2; the collector of the power switch tube Q3 is connected with the cathode of the diode D3 and the collector of the power switch tube Q7; the other end of the relay KP2 is connected with the cathode of the diode D1; the anode of the diode D1 is connected with one end of the winding L1 and the collector of the power switch tube Q2; the other end of the winding L1 is connected with an emitting electrode of the power switch tube Q3 and a collector electrode of the power switch tube Q4; the cathode of the second storage battery Vbat is connected with the cathode of the capacitor C1, the emitter of the power switch tube Q2, the emitter of the power switch tube Q4, the emitter of the power switch tube Q6 and the anode of the diode D4; the anode of the diode D3 is connected with the collector of the power switch tube Q6 and one end of a single-phase mains supply end AC; the other end of the single-phase commercial power end AC is connected with an emitting electrode of a power switch tube Q7 and a cathode of a diode D4;
the photovoltaic charging circuit includes: the positive electrode of a third storage battery Vbat of the photovoltaic charging circuit is connected with the positive electrode of a capacitor C1 and one end of a relay KP 2; the collector electrode of the power switch tube Q3 is connected with the anode of the capacitor C2 and the anode of the second photovoltaic cell panel PV; the other end of the relay KP2 is connected with the cathode of the diode D1; the anode of the diode D1 is connected with the collector of the power switch tube Q2 and one end of the winding L1; the other end of the winding L1 is connected with an emitting electrode of the power switch tube Q3 and a collector electrode of the power switch tube Q4; and the cathode of the third storage battery Vbat is connected with the cathode of the capacitor C1, the emitter of the power switch tube Q2, the emitter of the power switch tube Q4, the cathode of the capacitor C2 and the cathode of the second photovoltaic cell panel PV.
2. A control method of a switched reluctance motor circuit integrating a plurality of charging modes according to claim 1,
the PFC rectifying circuit is used for externally connecting alternating current to a single-phase commercial power end to charge a battery in a PFC working mode;
the photovoltaic charging circuit is used for charging the battery side through a circuit formed by a photovoltaic battery panel side through a driver switch tube in a photovoltaic charging mode;
the asymmetric half-bridge circuit is used in a motor driving mode, and realizes motor speed regulation by topologically distributing currents of three windings of the switched reluctance motor.
3. The method for controlling a switched reluctance motor circuit integrating a plurality of charging modes according to claim 2,
the operating state of the motor drive mode includes:
motor drive mode state 1: the relay KP1 is controlled to be closed, the power switch tubes Q1 and Q4 are conducted, and other relays and the power switch tubes in the topology are in a turn-off state; at the moment, the first storage battery Vbat and the first photovoltaic panel PV provide energy for the winding L1, and current flows out of the first storage battery Vbat and the first photovoltaic panel, passes through the relay KP1, the power switch tube Q1, the winding L1 and the power switch tube Q4, and finally flows back to the first storage battery Vbat and the first photovoltaic panel PV to form a loop;
motor drive mode state 2: under the condition of a motor driving mode state 1, a power switch tube Q4 is closed, and at the moment, current on a winding flows through a freewheeling diode of a power switch tube Q3 and then flows back to a winding L1 through the power switch tube Q1; meanwhile, the current of the first photovoltaic cell panel PV flows into the first storage battery Vbat through the control relay KP1 and then flows back to the negative side of the first photovoltaic cell panel to form a loop;
motor drive mode state 3: under the condition of the motor driving mode state 2, the power switch tube Q1 is closed, at the moment, the current on the winding passes through a freewheeling diode of the power switch tube Q3, then flows into the first storage battery Vbat through the control relay KP1, and then the current continuously passes through the freewheeling diode of the power switch tube Q2 to form a loop; meanwhile, the current of the first photovoltaic cell panel PV flows into the first storage battery Vbat through the control relay KP1 and then flows back to the negative side of the first photovoltaic cell panel to form a loop.
4. The method for controlling a switched reluctance motor circuit integrating a plurality of charging modes according to claim 2,
the working state of the PFC working mode comprises the following steps:
PFC operating mode state 1: the relay KP2 is controlled to be closed, the power switch tubes Q2 and Q3 are conducted, and other relays and the power switch tubes in the topology are in a turn-off state; at the moment, the commercial power energy passes through a rectifier bridge formed by freewheeling diodes of the power switch tubes Q6 and Q7 and diodes D3 and D4, and then the current flows back to the negative side of the rectifier bridge to form a loop through the power switch tube Q3, the winding L1 and the power switch tube Q2;
PFC operating mode state 2: under the condition of a PFC working mode state 1, turning off power switching tubes Q2 and Q3; at this time, the current on the winding L1 flows to the second battery Vbat through the diode D1 and the control relay KP2, and then flows back to the winding L1 through the freewheeling diode of the power switch tube Q4 to form a loop.
5. The method for controlling the switched reluctance motor circuit integrating multiple charging modes according to claim 2, wherein the operating state of the photovoltaic charging mode comprises:
photovoltaic charge mode state 1: the relay KP2 is controlled to be closed, the power switch tubes Q2 and Q3 are conducted, and other relays and the power switch tubes in the topology are in a turn-off state; at the moment, the energy of the second photovoltaic cell panel PV flows back to the negative side of the second photovoltaic cell panel PV to form a loop through the power switch tube Q3, the winding L1 and the power switch tube Q2;
photovoltaic charge mode state 2: under the condition of the photovoltaic charging mode state 1, the power switching tubes Q2 and Q3 are closed; at this time, the current on the winding L1 flows to the third battery Vbat through the diode D1 and the control relay KP2, and then flows back to the winding L1 through the freewheeling diode of the power switch tube Q4 to form a loop.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN117955400A (en) * | 2023-12-26 | 2024-04-30 | 深蓝探索动力科技无锡有限公司 | Control method and device for driving circuit of switched reluctance motor, electronic equipment and storage medium |
CN117997213A (en) * | 2023-12-26 | 2024-05-07 | 深蓝探索动力科技无锡有限公司 | Control method for driving circuit of switched reluctance motor and electronic equipment |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN117955400A (en) * | 2023-12-26 | 2024-04-30 | 深蓝探索动力科技无锡有限公司 | Control method and device for driving circuit of switched reluctance motor, electronic equipment and storage medium |
CN117997213A (en) * | 2023-12-26 | 2024-05-07 | 深蓝探索动力科技无锡有限公司 | Control method for driving circuit of switched reluctance motor and electronic equipment |
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