CN119853563B - A fault-tolerant drive control method for electrically excited DC synchronous motors for electric vehicles - Google Patents
A fault-tolerant drive control method for electrically excited DC synchronous motors for electric vehiclesInfo
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- CN119853563B CN119853563B CN202510065483.1A CN202510065483A CN119853563B CN 119853563 B CN119853563 B CN 119853563B CN 202510065483 A CN202510065483 A CN 202510065483A CN 119853563 B CN119853563 B CN 119853563B
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Classifications
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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
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
- H02P29/028—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the motor continuing operation despite the fault condition, e.g. eliminating, compensating for or remedying the fault
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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
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
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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
- H02P25/022—Synchronous motors
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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
- H02P25/022—Synchronous motors
- H02P25/03—Synchronous motors with brushless excitation
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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
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
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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
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/22—Multiple windings; Windings for more than three phases
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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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
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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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
- H02P6/085—Arrangements for controlling the speed or torque of a single motor in a bridge configuration
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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
- H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
- H02P2207/05—Synchronous machines, e.g. with permanent magnets or DC excitation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
本发明公开了一种电动汽车用电励磁直流同步电机容错驱动控制方法，涉及电励磁直流同步电机领域，该电励磁直流同步电机在未发生故障发生前，以正常策略进行电动控制，在励磁故障发生后，切换至故障电动模式，其中故障电动模式中兼顾了主功率变换器开关管故障容错控制，提高了四相电励磁直流同步电机在各种环境下运行的可靠性，适合应用于电动汽车等行业。
This invention discloses a fault-tolerant drive control method for an electrically excited DC synchronous motor for electric vehicles, relating to the field of electrically excited DC synchronous motors. Before a fault occurs, the electrically excited DC synchronous motor is controlled by a normal strategy. After an excitation fault occurs, it switches to a fault-tolerant motor mode. The fault-tolerant motor mode takes into account the fault-tolerant control of the main power converter switching transistor, improving the reliability of the four-phase electrically excited DC synchronous motor in various environments, and is suitable for applications in industries such as electric vehicles.
Description
Technical Field
The invention relates to the field of an electrically excited direct current synchronous motor, in particular to a fault-tolerant driving control method of the electrically excited direct current synchronous motor for an electric automobile.
Background
The electric excitation DC synchronous motor is a novel brushless DC motor developed on the basis of a switched reluctance motor, wherein an armature winding and an excitation winding are wound on a stator, and a rotor is free of windings, so that the brushless DC motor is simple and reliable in structure and flexible to control. The four-phase electro-excitation direct current synchronous motor has the advantages of good fault tolerance performance, suitability for severe working conditions, very flexible control and wide application prospect in the fields of electric automobiles, aviation and the like.
At present, the research on fault-tolerant control strategies related to the excitation faults of the four-phase electrically excited direct current synchronous motor is less. In the prior art, the fault-tolerant strategy of electric control for the four-phase electric excitation direct current synchronous motor is blank, and meanwhile, when the main power converter fails during excitation failure, further fault-tolerant control is required to be still blank. In order to fill the gap, a fault-tolerant driving control method of an electrically excited direct current synchronous motor for an electric automobile is researched.
Disclosure of Invention
The inventor provides a fault-tolerant driving control method for an electric excitation direct current synchronous motor for an electric automobile aiming at the problems and the technical requirements, and the fault-tolerant control can be realized when a switching tube in a main power topology is in fault under excitation faults. The technical scheme of the invention is as follows:
An electric fault-tolerant control strategy for an electrically excited direct current synchronous motor comprises a fault-tolerant topology, a four-phase electrically excited direct current synchronous motor, a position sensor, a load, an energy storage capacitor C and a direct current power supply U dc;
The positive electrode of the direct current power supply U dc is connected with the collector electrode of the upper switching tube of each bridge arm in the fault-tolerant topology, and the negative electrode of the direct current power supply U dc is connected with the emitter electrode of the lower switching tube of each bridge arm in the fault-tolerant topology;
the load is connected in parallel with the load energy storage capacitor and in parallel with a fault-tolerant topology, and the fault-tolerant topology is composed of an H-bridge converter and 4 electronic switches.
The four-phase electro-excitation direct-current synchronous motor is characterized in that four groups of H-bridge converters have the same structure, each H-bridge converter comprises a first bridge arm and a second bridge arm which are respectively formed by reversely connecting an upper switching tube and a lower switching tube in series, two ends of the lower switching tube in the two bridge arms are respectively connected with a diode in parallel in an opposite mode, meanwhile, the positive end of an A-phase winding and the positive end of a C-phase winding are connected with an electronic switch, and the negative end of the A-phase winding and the negative end of the C-phase winding are connected with an electronic switch;
The four-phase electrically excited direct current synchronous motor is characterized in that the three-phase armature winding comprises an A-phase winding, a B-phase winding, a C-phase winding and a D-phase winding, a first H-bridge converter is connected with the A-phase winding, a second H-bridge converter is connected with the B-phase winding, a third H-bridge converter is connected with the C-phase winding, and a fourth H-bridge converter is connected with the D-phase winding.
When the four-phase electric excitation direct current synchronous motor does not detect excitation faults, the four-phase electric excitation direct current synchronous motor works in a normal strategy state, the controller controls the electronic switches K1, K2, K3 and K4 to be disconnected, and adopts a switching-on logic in normal operation, and when the four-phase electric excitation direct current synchronous motor detects excitation faults, the excitation circuit is disconnected, and fault-tolerant control is performed by adopting a fault-tolerant strategy.
The beneficial technical effects of the invention are as follows:
The application discloses a fault-tolerant driving control method of an electric excitation direct current synchronous motor for an electric automobile, which is characterized in that before an excitation fault occurs, K1, K2, K3 and K4 are closed, normal electric operation is performed in a mode of positive electricity through ascending of an inductance and negative electricity through descending of an inductance, after the excitation fault occurs, the electric excitation direct current synchronous motor is switched to a fault-tolerant mode, the running reliability of the four-phase electric excitation direct current synchronous motor under various environments is improved, and the method is suitable for industries such as automobiles.
In addition, the four-phase electro-magnetic direct current synchronous motor adopts the H-bridge converter, which is beneficial to independent windings of each phase, and the problem of current gap possibly caused by midpoint potential change is avoided, and the control strategy is more flexible. The motor power generation process is not required to be connected with the power consumption phase in series, so that the motor operation efficiency can be improved, and the motor has good fault tolerance.
Drawings
Fig. 1 is a control structure diagram of a four-phase electrically excited dc synchronous motor of the present application.
Fig. 2 is a topological conduction diagram of the converter when the four-phase electrically excited direct current synchronous motor has excitation faults when the motor electrical angle is located in the [0 degree, 90 degree ] interval and the switching tube has no fault in the fault-tolerant topology.
Fig. 3 is a schematic diagram of fault-tolerant control logic when the four-phase electrically excited dc synchronous motor of the present application has an excitation fault and the switching tube in the fault-tolerant topology has no fault.
Fig. 4 is a topological conduction diagram of the converter when the motor electrical angle of the application is located in the [90 °,180 ° ] interval, the four-phase electrically excited direct current synchronous motor has excitation fault, and the switching tube S1 in the fault tolerant topology has fault.
Fig. 5 is a schematic diagram of fault-tolerant control logic when the four-phase electrically excited dc synchronous motor of the present application has an excitation fault and the switching tube S1 in the fault-tolerant topology has a fault.
Fig. 6 is a topological conduction diagram of the converter when the motor electrical angle is located in the [0 °,90 ° ] interval, the four-phase electrically excited direct current synchronous motor has excitation faults, and the switching tubes S13 and S14 in the fault-tolerant topology have faults.
Fig. 7 is a schematic diagram of fault-tolerant control logic when the switching tubes S13 and S14 in the four-phase electrically excited dc synchronous motor of the present application have a fault-excited and fault-tolerant topology.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings.
The application discloses a fault-tolerant driving control method of an electric excitation direct current synchronous motor for an electric automobile, which is characterized in that an electric fault-tolerant control strategy of the electric excitation direct current synchronous motor comprises fault-tolerant topology, a four-phase electric excitation direct current synchronous motor, a position sensor, a load and an energy storage capacitor C, and a direct current power supply U dc;
The positive electrode of the direct current power supply U dc is connected with the collector electrode of the upper switching tube of each bridge arm in the fault-tolerant topology, and the negative electrode of the direct current power supply U dc is connected with the emitter electrode of the lower switching tube of each bridge arm in the fault-tolerant topology;
the load is connected in parallel with the load energy storage capacitor and in parallel with a fault-tolerant topology, and the fault-tolerant topology is composed of an H-bridge converter and 4 electronic switches.
The four-phase electro-excitation direct-current synchronous motor is characterized in that four groups of H-bridge converters have the same structure, each H-bridge converter comprises a first bridge arm and a second bridge arm which are respectively formed by reversely connecting an upper switching tube and a lower switching tube in series, two ends of the lower switching tube in the two bridge arms are respectively connected with a diode in parallel in an opposite mode, meanwhile, the positive end of an A-phase winding and the positive end of a C-phase winding are connected with an electronic switch, and the negative end of the A-phase winding and the negative end of the C-phase winding are connected with an electronic switch;
The four-phase electrically excited direct current synchronous motor is characterized in that the three-phase armature winding comprises an A-phase winding, a B-phase winding, a C-phase winding and a D-phase winding, a first H-bridge converter is connected with the A-phase winding, a second H-bridge converter is connected with the B-phase winding, a third H-bridge converter is connected with the C-phase winding, and a fourth H-bridge converter is connected with the D-phase winding.
The working process of the four-phase electrically excited DC synchronous motor is described as follows in combination with the structure shown in FIG. 1:
When the current sensor does not detect the excitation fault, the four-phase electro-magnetic direct-current synchronous motor works in a normal strategy state, the controller controls the electronic switches K1, K2, K3 and K4 to be switched off, controls the switches S9, S2, S5, S14, S4, S11, S7 and S16 to be switched on when the motor electric angle is in a [0 degree and 90 degree interval, controls the switches S1, S10, S6, S13, S4, S11, S7 and S16 to be switched on when the motor electric angle is in a [90 degree and 180 degree interval, controls the switches S1, S10, S6, S13, S3, S12, S8 and S15 to be switched on when the motor electric angle is in a [180 degree and 360 degree ] interval, and controls the switches S9, S2, S5, S14, S3, S12, S8 and S15 to be switched on when the motor electric angle is in a [180 degree and 270 degree interval.
When the current sensor detects an excitation fault, the controller controls the excitation circuit to be disconnected, the operation is switched to a fault-tolerant mode, when the four-phase electro-magnetic direct-current synchronous motor has excitation fault and a switching tube in fault-tolerant topology does not have fault, the motor electrical angle is located in a [0 degree, 90 degree ] interval, and the topological conduction diagram and the fault-tolerant conduction logic of the converter are respectively shown in fig. 2 and 3:
Firstly, the electronic switches K1, K2, K3 and K4 are controlled to be disconnected, and when the electric angle of the motor is located in the interval of [0 DEG, 90 DEG ], the electronic switches S5, S14, S7 and S16 are controlled to be conducted;
When the electric angle of the motor is located in the [90 DEG, 180 DEG ] interval, controlling the conduction of S1, S10, S7 and S16;
when the electric angle of the motor is located in the interval of 180 degrees and 270 degrees, controlling the conduction of S1, S10, S3 and S12;
When the motor electrical angle is in the [270 DEG, 360 DEG ] interval, the control S5, S14, S3 and S12 are conducted.
When the four-phase electrically excited direct current synchronous motor has excitation faults and a single-tube fault occurs in a switching tube in a fault-tolerant topology, (taking an S1 fault as an example, and the rest of the cases are analogized). The topological conduction diagram and fault-tolerant conduction logic of the converter when the electric angle of the motor is located in the [90 DEG, 180 DEG ] interval are respectively shown in the figures 4 and 5:
Firstly, the electronic switches K1, K2, K3 and K4 are controlled to be disconnected, and when the electric angle of the motor is located in the interval of [0 DEG, 90 DEG ], the electronic switches S5, S14, S7 and S16 are controlled to be conducted;
When the electric angle of the motor is located in the [90 DEG, 180 DEG ] interval, controlling the conduction of S2, S9, S7 and S16;
When the electric angle of the motor is located in the interval of 180 degrees and 270 degrees, controlling the conduction of S2, S9, S3 and S12;
When the motor electrical angle is in the [270 DEG, 360 DEG ] interval, the control S5, S14, S3 and S12 are conducted.
When the four-phase electrically excited direct current synchronous motor has excitation faults and the switching tube in the fault-tolerant topology has the same bridge arm double-tube open-circuit faults or the switching tube has the same phase two upper tube open-circuits or two lower tube open-circuits faults, (taking C phase as an example, S13 and S14 have faults, at the moment, the AC winding passes current in opposite directions in an inductance rising area, and the rest conditions are analogized). The topological conduction diagram and fault-tolerant conduction logic of the converter when the electric angle of the motor is located in the [0 degree, 90 degree ] interval are respectively shown in fig. 6 and 7:
Firstly, controlling the electronic switch K2 to be conducted, and controlling the electronic switches K1, K3 and K4 to be disconnected, and controlling the electronic switches S6, S9, S7 and S16 to be conducted when the electric angle of the motor is located in a [0 degree, 90 degree ] interval;
When the electric angle of the motor is located in the [90 DEG, 180 DEG ] interval, controlling the conduction of S1, S10, S7 and S16;
when the electric angle of the motor is located in the interval of 180 degrees and 270 degrees, controlling the conduction of S1, S10, S3 and S12;
When the motor electrical angle is in the [270 DEG, 360 DEG ] interval, the control S6, S9, S3 and S12 are conducted.
When the four-phase electrically excited direct current synchronous motor has excitation faults and the switching tube in the fault-tolerant topology has three-tube open circuits or more (1-phase in AC and 1-phase two-phase open circuit fault in BD), fault-tolerant guide logic (taking two-phase open circuit faults of S13, S14, S15 and S16 as examples and the rest as analogy) is as follows:
firstly, controlling the electronic switches K2 and K4 to be conducted, and controlling the electronic switches K1 and K3 to be disconnected, and controlling the electronic switches S6, S9, S8 and S11 to be conducted when the electric angle of the motor is located in a [0 degree, 90 degree ] interval;
when the electric angle of the motor is located in the [90 DEG, 180 DEG ] interval, controlling the conduction of S1, S10, S8 and S11;
when the electric angle of the motor is located in the interval of 180 degrees and 270 degrees, controlling the conduction of S1, S10, S3 and S12;
When the motor electrical angle is in the [270 DEG, 360 DEG ] interval, the control S6, S9, S3 and S12 are conducted.
In the process of controlling the states of a switching tube and an electronic switch in the fault-tolerant topology, the controller carries out PI regulation on the error of the actual rotating speed and the given rotating speed to obtain given current, then carries out PI regulation on the given current and the actual current of the current 4-phase winding to obtain corresponding duty ratio signals, and carries out AND operation with fault-tolerant on logic to carry out chopper control on the current of the four-phase armature winding so as to realize closed-loop control on the rotating speed.
The above is only a preferred embodiment of the present application, and the present application is not limited to the above examples. It is to be understood that other modifications and variations which may be directly derived or contemplated by those skilled in the art without departing from the spirit and concepts of the present application are deemed to be included within the scope of the present application.
Claims (2)
1. The fault-tolerant driving control method of the electric excitation direct current synchronous motor for the electric automobile is characterized by comprising fault-tolerant topology, a four-phase electric excitation direct current synchronous motor, a position sensor, a load, an energy storage capacitor C and a direct current power supply U dc;
The positive electrode of the direct current power supply U dc is connected with the collector electrode of the upper switching tube of each bridge arm in the fault-tolerant topology, and the negative electrode of the direct current power supply U dc is connected with the emitter electrode of the lower switching tube of each bridge arm in the fault-tolerant topology;
The load is connected with the energy storage capacitor in parallel and is connected with a fault-tolerant topology in parallel, and the fault-tolerant topology is composed of 4H-bridge converters and 4 electronic switches K1, K2, K3 and K4;
the four groups of H-bridge converters have the same structure, each group of H-bridge converter comprises a first bridge arm and a second bridge arm which are respectively formed by connecting an upper switch tube and a lower switch tube in series, and two ends of the upper switch tube and the lower switch tube in the two bridge arms are respectively connected with a diode in anti-parallel, meanwhile, the positive end of an A-phase winding and the positive end of a C-phase winding are connected with an electronic switch K1, the negative end of the A-phase winding and the negative end of the C-phase winding are connected with an electronic switch K2, the positive end of a B-phase winding and the positive end of a D-phase winding are connected with an electronic switch K3, and the negative end of the B-phase winding and the negative end of the D-phase winding are connected with an electronic switch K4;
The four-phase armature winding comprises an A-phase winding, a B-phase winding, a C-phase winding and a D-phase winding, wherein a first H-bridge converter is connected with the A-phase winding, a second H-bridge converter is connected with the B-phase winding, a third H-bridge converter is connected with the C-phase winding, and a fourth H-bridge converter is connected with the D-phase winding;
Each group of H-bridge converters contains 4 switching tubes, wherein:
The switching tubes S1, S2, S9 and S10 of the first H-bridge converter respectively control the on-off of the positive end and the negative end of the A-phase winding;
The switching tubes S3, S4, S11 and S12 of the second H-bridge converter respectively control the on-off of the positive end and the negative end of the B-phase winding;
The switching tubes S5, S6, S13 and S14 of the third H-bridge converter respectively control the on-off of the positive end and the negative end of the C-phase winding;
The switching tubes S7, S8, S15 and S16 of the fourth H-bridge converter respectively control the on-off of the positive end and the negative end of the D-phase winding;
When the four-phase electric excitation direct current synchronous motor is excited normally, the controller controls the electronic switches K1, K2, K3 and K4 to be disconnected, and when the electric angle of the motor is positioned During the interval, the control S9, S2, S5, S14, S4, S11, S7 and S16 is conducted, and the motor electric angle is positionedDuring the interval, the control S1, S10, S6, S13, S4, S11, S7 and S16 is conducted, and the motor electric angle is positionedDuring the interval, the control S1, S10, S6, S13, S3, S12, S8 and S15 is conducted, and the motor electric angle is positionedDuring the interval, the control S9, S2, S5, S14, S3, S12, S8 and S15 are conducted;
when the four-phase electrically excited direct current synchronous motor has excitation faults and a switching tube in the fault-tolerant topology does not have faults, the fault-tolerant conduction logic is as follows:
Firstly, the electronic switches K1, K2, K3 and K4 are controlled to be disconnected, when the electric angle of the motor is positioned During the interval, the control S5, S14, S7 and S16 are conducted;
The electric angle of the motor is positioned During the interval, the control S1, S10, S7 and S16 are conducted;
The electric angle of the motor is positioned During the interval, the control S1, S10, S3, S12 is conducted, and the motor electric angle is positionedDuring the interval, the control S5, S14, S3 and S12 are conducted;
when the four-phase electro-excited direct current synchronous motor has excitation faults and a single-tube fault occurs in a switching tube in a fault-tolerant topology, fault-tolerant conduction logic is as follows, and when the S1 fault is:
Firstly, the electronic switches K1, K2, K3 and K4 are controlled to be disconnected, when the electric angle of the motor is positioned During the interval, the control S5, S14, S7 and S16 are conducted;
The electric angle of the motor is positioned During the interval, the control S2, S9, S7 and S16 are conducted;
The electric angle of the motor is positioned During the interval, the control S2, S9, S3 and S12 are conducted;
The electric angle of the motor is positioned During the interval, the control S5, S14, S3 and S12 are conducted;
When the four-phase electro-excited direct current synchronous motor has excitation faults and the switching tube has the same bridge arm double-tube open-circuit faults or the switching tube has two upper tube open-circuits or two lower tube open-circuits faults on the same phase in fault tolerant topology, fault tolerant conduction logic is as follows, and when the C phases S13 and S14 have faults, the AC winding is conducted with currents in opposite directions in an inductance rising area:
firstly, the electronic switch K2 is controlled to be turned on, the electronic switches K1, K3 and K4 are controlled to be turned off, and when the electric angle of the motor is positioned During the interval, the control S6, S9, S7 and S16 are conducted;
The electric angle of the motor is positioned During the interval, the control S1, S10, S7 and S16 are conducted;
The electric angle of the motor is positioned During the interval, the control S1, S10, S3 and S12 are conducted;
The electric angle of the motor is positioned During the interval, the control S6, S9, S3 and S12 are conducted;
When the four-phase electrically excited direct current synchronous motor has excitation faults and the switching tube in the fault-tolerant topology has more than three open circuits, the fault-tolerant conduction logic is as follows, when 1 phase in the AC and 1 phase in the BD have two-phase open circuit faults, namely, S13, S14, S15 and S16 have two-phase open circuit faults:
Firstly, the electronic switches K2 and K4 are controlled to be conducted, the electronic switches K1 and K3 are controlled to be disconnected, and when the electric angle of the motor is positioned During the interval, the control S6, S9, S8 and S11 are conducted;
The electric angle of the motor is positioned During the interval, the control S1, S10, S8 and S11 are conducted;
The electric angle of the motor is positioned During the interval, the control S1, S10, S3 and S12 are conducted;
The electric angle of the motor is positioned In the section, the control S6, S9, S3, S12 is turned on.
2. The fault-tolerant drive control method of an electrically excited direct current synchronous motor for an electric automobile according to claim 1, wherein in the process of controlling the states of a switching tube and an electronic switch in a fault-tolerant topology, the error between the actual rotation speed and the given rotation speed is PI-regulated to obtain a given current, the given current and the actual current of the current 4-phase winding are PI-regulated to obtain a corresponding duty ratio signal, and the corresponding duty ratio signal is AND-operated with fault-tolerant on logic to perform chopper control on the current of the four-phase armature winding to realize closed-loop control on the rotation speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510065483.1A CN119853563B (en) | 2025-01-16 | 2025-01-16 | A fault-tolerant drive control method for electrically excited DC synchronous motors for electric vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510065483.1A CN119853563B (en) | 2025-01-16 | 2025-01-16 | A fault-tolerant drive control method for electrically excited DC synchronous motors for electric vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN119853563A CN119853563A (en) | 2025-04-18 |
| CN119853563B true CN119853563B (en) | 2025-12-19 |
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| CN113890433A (en) * | 2021-09-28 | 2022-01-04 | 南京航空航天大学 | Electro-magnetic doubly salient motor capable of ensuring fault-tolerant power generation power by improving bus voltage |
| CN114785236A (en) * | 2022-03-28 | 2022-07-22 | 河北工业大学 | Bipolar fault-tolerant control method for switched reluctance motor power converter |
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| CN110311522B (en) * | 2019-07-15 | 2021-11-23 | 南京航空航天大学 | Four-phase symmetric electro-magnetic doubly salient motor |
| US11909281B2 (en) * | 2022-02-14 | 2024-02-20 | Jiangsu University | Stator-based permanent magnet field-enhanced hybrid-excitation motor capable of operating under multiple working conditions and drive control method thereof |
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| CN113890433A (en) * | 2021-09-28 | 2022-01-04 | 南京航空航天大学 | Electro-magnetic doubly salient motor capable of ensuring fault-tolerant power generation power by improving bus voltage |
| CN114785236A (en) * | 2022-03-28 | 2022-07-22 | 河北工业大学 | Bipolar fault-tolerant control method for switched reluctance motor power converter |
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