CN210478413U - Motor controller electromagnetic compatibility circuit, motor controller and electric automobile - Google Patents
Motor controller electromagnetic compatibility circuit, motor controller and electric automobile Download PDFInfo
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- CN210478413U CN210478413U CN201921191226.9U CN201921191226U CN210478413U CN 210478413 U CN210478413 U CN 210478413U CN 201921191226 U CN201921191226 U CN 201921191226U CN 210478413 U CN210478413 U CN 210478413U
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Abstract
The utility model provides a machine controller electromagnetic compatibility circuit, machine controller and electric automobile relates to the anti-interference field of machine controller. This motor controller electromagnetic compatibility circuit includes: the first electromagnetic compatibility circuit is arranged in a low-voltage control unit of the motor controller; the second electromagnetic compatibility circuit is arranged in a power conversion circuit of the motor controller and is connected with the low-voltage control unit; and the high-voltage power driving unit is connected with the second electromagnetic compatible circuit. The utility model discloses a scheme has avoided in the controller working process, the frequent switching of high tension switchgear pipe break-make to and the noise that the power conversion circuit during operation produced, thereby disturb the normal operating of its own circuit or other equipment, guaranteed the fail safe nature of controller work.
Description
Technical Field
The utility model relates to an electromagnetism anti-interference field, in particular to electric machine controller electromagnetism anti-interference technique.
Background
The electrical architecture of a new energy electric vehicle can be divided into high voltage components and low voltage components. The motor controller is an important component of a high-voltage component of an electric automobile, and has the function of controlling the rotation and the rotating speed of a vehicle-mounted driving motor so as to drive the electric automobile to advance.
The motor controller includes a low voltage control unit and a high voltage power drive unit. The high-voltage power driving unit is mainly formed by connecting a plurality of high-voltage switch tubes in parallel. The low-voltage control unit is connected with the high-voltage power driving unit through a flat cable and provides control signals for the high-voltage power driving unit to enable the high-voltage switch triode to be switched on and off, and the vehicle-mounted power battery provides electric energy for the motor through the high-voltage switch triode to enable the vehicle to run. The vehicle-mounted storage battery generates positive and negative voltages required by a gate signal for controlling the on and off of the high-voltage switch triode through the power supply conversion circuit. The high-voltage switch tube is frequently switched on and off, and noise signals generated when the power supply conversion circuit works can be transmitted to disturbance and radiation disturbance along the shell of the controller, the low-voltage connector and the low-voltage wire harness, so that the normal operation of the circuit or other equipment is disturbed.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a machine controller electromagnetic compatibility circuit, machine controller and electric automobile for in solving prior art in the controller working process, the frequent switching of high tension switchgear pipe break-make, and the noise that the power transformation circuit during operation produced, thereby disturb the problem of the normal operating of its own circuit or other equipment.
In order to solve the technical problem, the utility model discloses a following technical scheme:
an embodiment of the utility model provides a machine controller electromagnetic compatibility circuit, include:
the first electromagnetic compatibility circuit is arranged in a low-voltage control unit of the motor controller;
the second electromagnetic compatibility circuit is arranged in a power conversion circuit of the motor controller and is connected with the low-voltage control unit;
and the high-voltage power driving unit is connected with the second electromagnetic compatible circuit.
Further, the first electromagnetic compatibility circuit includes:
a capacitance circuit that suppresses common mode noise;
an inductance that suppresses common mode noise;
the inductance circuit is connected with the capacitance circuit;
and the capacitor is connected with the inductance circuit.
Further, the capacitance circuit includes:
the first Y capacitor, the second Y capacitor, the first three-terminal capacitor and the second three-terminal capacitor;
one end of the first Y capacitor is connected with the anode of the low-voltage power supply input port of the motor controller, and the other end of the first Y capacitor is grounded;
one end of the second Y capacitor is connected with the negative electrode of the low-voltage power supply input port of the motor controller, and the other end of the second Y capacitor is grounded;
one end of the first three-terminal capacitor is connected to the positive electrode of the power supply in series, the other end of the first three-terminal capacitor is grounded, and the third terminal of the first three-terminal capacitor is connected with the inductive circuit;
and one end of the second three-terminal capacitor is connected in series with the power supply negative electrode, the other end of the second three-terminal capacitor is grounded, and the third terminal of the second three-terminal capacitor is connected with the inductive circuit.
Further, the inductor includes:
and one end of the first inductor is respectively connected with the first Y capacitor and the second Y capacitor, and the other end of the first inductor is respectively connected with the first three-terminal capacitor and the second three-terminal capacitor.
Further, the inductive circuit includes:
a second inductor and a third inductor;
one end of the second inductor is connected with the positive electrode of the power supply, and the other end of the second inductor is connected with the first three-terminal capacitor;
and one end of the third inductor is connected with the negative electrode of the power supply, and the other end of the third inductor is connected with the second three-terminal capacitor.
Further, the capacitor includes:
and the first X capacitor is connected between the anode and the cathode of the power supply.
Further, the second electromagnetic compatibility circuit includes:
an RC absorption circuit for suppressing interference noise;
a switching diode connected in parallel with the RC absorption circuit;
the first group of capacitors is connected with the switch diode;
an output end;
a second set of capacitors to suppress electromagnetic noise connected in parallel with the first set of capacitors.
Further, the RC absorption circuit for suppressing interference noise includes:
the first RC absorption circuit, the second RC absorption circuit and the third RC absorption circuit;
the first RC absorption circuit comprises a first resistor and a first capacitor, and the first resistor is connected with the first capacitor;
the second RC absorption circuit comprises a second resistor and a second capacitor, and the second resistor is connected with the second capacitor;
the third RC absorption circuit comprises a third resistor and a third capacitor, and the third resistor is connected with the third capacitor.
Further, the switching diode includes:
a first switching diode, a second switching diode, and a third switching diode;
the first switching diode is connected in parallel with the first RC absorption circuit;
the second switch diode is connected in parallel with the second RC absorption circuit;
the third switching diode is connected in parallel with the third RC absorption circuit.
Further, the output terminal includes:
a first output terminal, a second output terminal, and a third output terminal;
further, the first set of capacitors for suppressing common mode noise includes:
a second X capacitor, a third X capacitor and a fourth X capacitor;
the second X capacitor is connected between the positive electrode and the negative electrode of the first output end;
the third X capacitor is connected between the positive electrode and the negative electrode of the second output end;
and the fourth X capacitor is connected between the positive electrode and the negative electrode of the third output end.
Further, the second set of capacitances for suppressing electromagnetic noise comprises:
the first support capacitor, the second support capacitor and the third support capacitor;
further, the first support capacitor includes:
the fourth capacitor is connected with the fifth capacitor and is connected between the positive electrode and the negative electrode of the first output end;
the second supporting capacitor comprises a sixth capacitor and a seventh capacitor, and the sixth capacitor is connected with the seventh capacitor and connected between the positive electrode and the negative electrode of the second output end;
the third supporting capacitor comprises an eighth capacitor and a ninth capacitor, and the eighth capacitor is connected with the ninth capacitor and connected between the positive electrode and the negative electrode of the third output end.
Further, the high voltage power driving unit includes:
the first high-voltage switching triode, the second high-voltage switching triode, the third high-voltage switching triode, the fourth high-voltage switching triode, the fifth high-voltage switching triode and the sixth high-voltage switching triode;
the first high-voltage switching triode is connected with the second high-voltage switching triode;
the third high-voltage switching triode is connected with the fourth high-voltage switching triode;
the fifth high-voltage switching triode is connected with the sixth high-voltage switching triode;
the first high-voltage switch triode and the second high-voltage switch triode are connected in parallel, the third high-voltage switch triode and the fourth high-voltage switch triode are connected in parallel, and the fifth high-voltage switch triode and the sixth high-voltage switch triode are connected in parallel.
Further, the electromagnetic compatibility circuit of the power conversion circuit is connected to the high-voltage power driving unit, and includes:
a point potential between an emitter of the first high-voltage switching transistor and a collector of the second high-voltage switching transistor is connected to a point potential of the first support capacitor, a point potential between an emitter of the third high-voltage switching transistor and a collector of the fourth high-voltage switching transistor is connected to a point potential of the second support capacitor, and a point potential between an emitter of the fifth high-voltage switching transistor and a collector of the sixth high-voltage switching transistor is connected to a point potential of the third support capacitor.
An embodiment of the utility model provides a still provide a motor controller, include: the motor controller comprises a low-voltage control unit, a power supply conversion circuit, a high-voltage power driving unit and the motor controller electromagnetic compatibility circuit.
The embodiment of the utility model provides an electric automobile is still provided, including foretell machine controller.
The utility model has the advantages that:
in the above scheme, the motor controller electromagnetic compatibility circuit includes: the first electromagnetic compatibility circuit is arranged in a low-voltage control unit of the motor controller; the second electromagnetic compatibility circuit is arranged in a power conversion circuit of the motor controller and is connected with the low-voltage control unit; and the high-voltage power driving unit is connected with the second electromagnetic compatible circuit. The high-voltage switch tube can effectively inhibit frequent switching of on and off of the high-voltage switch tube and noise generated when the power supply conversion circuit works, and the working reliability of the motor controller is ensured.
Drawings
Fig. 1 shows a schematic connection diagram of a first electromagnetic compatibility circuit, a second electromagnetic compatibility circuit and a high-voltage power driving unit according to the present invention;
fig. 2 is a schematic circuit diagram of a first electromagnetic compatibility circuit provided in a low-voltage control unit of the motor controller according to the present invention;
FIG. 3 is a schematic diagram showing the internal principle of a three-terminal capacitor;
fig. 4 is a schematic circuit diagram of a second electromagnetic compatibility circuit provided in the power conversion circuit of the motor controller according to the present invention;
fig. 5 shows a schematic circuit diagram of the high voltage power driving unit of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses in to the controller working process, the frequent switching of high tension switchgear pipe break-make to and the noise that power conversion circuit during operation produced, thereby disturb the problem of its own circuit or the normal operating of other equipment, provide a machine controller electromagnetic compatibility circuit.
As shown in fig. 1, an embodiment of the present invention provides an electromagnetic compatibility circuit of a motor controller, including:
a first electromagnetic compatibility circuit 100 provided in a low-voltage control unit of the motor controller;
the second electromagnetic compatible circuit 200 is arranged in a power conversion circuit of the motor controller and is connected with the low-voltage control unit;
and a high-voltage power driving unit connected to the second electromagnetic compatibility circuit 200.
The utility model discloses an in this embodiment, the interference noise that produces when electromagnetic compatibility circuit can effectively restrain the machine controller operation. The interference noise is prevented from influencing the normal operation of the circuit or other equipment, so that the safety and the reliability of the electric automobile during operation are improved.
As shown in fig. 2, in an optional embodiment of the present invention, the first electromagnetic compatibility circuit 100 includes:
the capacitor circuit 101 is used for suppressing common mode noise generated when the low-voltage control unit works;
the inductor is used for suppressing the common mode noise generated when the low-voltage control unit works;
the inductance circuit 102 is connected with the capacitance circuit 101 and used for suppressing the differential mode noise generated when the low-voltage control unit works;
and the capacitor for suppressing the differential mode noise is connected with the inductance circuit 102 and is used for suppressing the differential mode noise generated when the low-voltage control unit works.
Optionally, the capacitance circuit 101 includes:
the circuit comprises a first Y capacitor Y1, a second Y capacitor Y2, a first three-terminal capacitor C1 and a second three-terminal capacitor C2.
One end of the first Y capacitor Y1 is connected with the anode of the low-voltage power supply input port of the motor controller, and the other end of the first Y capacitor Y1 is grounded;
one end of the second Y capacitor Y2 is connected with the negative electrode of the low-voltage power supply input port of the motor controller, and the other end of the second Y capacitor Y2 is grounded;
one end of the first three-terminal capacitor C1 is connected in series with the positive electrode of the power supply, the other end of the first three-terminal capacitor C1 is grounded, and the third terminal of the first three-terminal capacitor C1 is connected with the inductive circuit;
one end of the second three-terminal capacitor C2 is connected in series with the power supply negative electrode, the other end of the second three-terminal capacitor C2 is grounded, and the third terminal of the second three-terminal capacitor C2 is connected with the inductive circuit;
the first Y capacitor Y1 and the second Y capacitor Y2 are of the same specification and model and are used for inhibiting common-mode noise brought by input ends; the first three-terminal capacitor C1 and the second three-terminal capacitor C2 are of the same specification and model, as shown in fig. 3, and include two capacitors and an inductor for suppressing common mode noise.
Optionally, the inductor includes:
a first inductor L1, wherein one end of the first inductor L1 is connected to the first Y capacitor Y1 and the second Y capacitor Y2, respectively, and the other end of the first inductor L1 is connected to the first three-terminal capacitor C1 and the second three-terminal capacitor C2, respectively;
the first inductor L1 is a common-mode inductor, and is configured to suppress common-mode noise generated when the low-voltage control unit operates.
Optionally, the inductive circuit 102 includes:
a second inductance L2 and a third inductance L3.
One end of the second inductor L2 is connected with the positive electrode of a power supply, and the other end of the second inductor L2 is connected with the first three-terminal capacitor C1;
one end of the third inductor L3 is connected with the negative electrode of a power supply, and the other end of the third inductor L3 is connected with the second three-terminal capacitor C2;
the second inductor L2 and the third inductor L3 are differential mode inductors, and are used for suppressing differential mode noise generated when the low-voltage control unit operates, and ensuring accuracy of an output signal.
Optionally, the capacitor includes:
and the first X capacitor X1 is connected between the positive electrode and the negative electrode of the power supply, and is used for inhibiting differential mode noise generated when the low-voltage control unit works and ensuring the accuracy of an output signal.
Optionally, as shown in fig. 4, the second electromagnetic compatibility circuit 200 includes:
an RC absorption circuit for suppressing interference noise;
a switching diode connected in parallel with the RC absorption circuit;
the first group of capacitors is connected with the switch diode;
an output end;
a second set of capacitors to suppress electromagnetic noise connected in parallel with the first set of capacitors.
In the embodiment of the utility model, the RC absorption circuit is used for absorbing the voltage peak at the two ends of the switching diode due to the parasitic effect when the secondary output of the power circuit is output, thereby suppressing the interference noise; the first group of capacitors is used for suppressing common mode noise; the second group of capacitors are used for inhibiting the situation that the voltage peak is too high when the on-off switching of the high-voltage switch triode is carried out due to the fact that the impedance of the gate signals of the high-voltage switch triode is different due to the fact that the wiring length of the circuit board is different, and therefore electromagnetic noise is reduced.
Optionally, the RC absorbing circuit for suppressing interference noise includes:
a first RC absorber circuit 201, a second RC absorber circuit 202, and a third RC absorber circuit 203.
The first RC absorbing circuit 201 comprises a first resistor RU1 and a first capacitor CU1, wherein the first resistor RU1 is connected with the first capacitor CU1 and is used for absorbing voltage spikes at two ends of the switching diode DU1 due to parasitic effects when the power supply circuit outputs, so that interference noise is suppressed;
the second RC absorbing circuit 202 comprises a second resistor RV1 and a second capacitor CV1, and the second resistor RV1 is connected to the second capacitor CV1, and is configured to absorb a voltage spike across the switching diode DU2 due to a parasitic effect when the power supply circuit outputs, so as to suppress interference noise;
the third RC absorbing circuit 203 comprises a third resistor RW1 and a third capacitor CW1, and the third resistor RW1 is connected to the third capacitor CW1, and is used for absorbing a voltage spike across the switching diode DU3 due to a parasitic effect when the power circuit outputs, so as to suppress interference noise.
Optionally, the switching diode includes:
a first switching diode DU1, a second switching diode DV1, and a third switching diode DW 1.
The first switching diode DU1 is connected in parallel with the first RC snubber circuit 201;
said second switching diode DV1 is connected in parallel with said second RC absorption circuit 202;
the third switching diode DW1 is connected in parallel with the third RC snubber circuit 203.
Optionally, the output terminal includes:
a first output terminal PU, a second output terminal PV and a third output terminal PW;
the first set of capacitors includes:
a second X capacitor XU1, a third X capacitor XV1 and a fourth X capacitor XW 1.
The second X capacitor XU1 is connected between the positive electrode and the negative electrode of the first output end PU and is used for suppressing common mode noise of the circuit;
the third X capacitor XV1 is connected between the positive and negative poles of the second output end PV and is used for suppressing the common mode noise of the circuit;
and the fourth X capacitor XW1 is connected between the positive electrode and the negative electrode of the third output end PW and is used for suppressing common mode noise of the circuit.
Optionally, the second set of capacitances to suppress electromagnetic noise comprises:
a first support capacitor 204, a second support capacitor 205, and a third support capacitor 206;
the first supporting capacitor 204 comprises a fourth capacitor CU2 and a fifth capacitor CU3, the fourth capacitor CU2 is connected to the fifth capacitor CU3, and is connected between the positive electrode and the negative electrode of the first output end PU, so as to absorb high-amplitude pulsating current and keep the voltage fluctuation of the first output end within a certain range;
the second supporting capacitor 205 comprises a sixth capacitor CV2 and a seventh capacitor CV3, and the sixth capacitor CV2 is connected to the seventh capacitor CV3, connected between the positive and negative poles of the second output terminal PV, and configured to absorb high-amplitude pulsating current, so that voltage fluctuation of the second output terminal is kept within a certain range;
the third supporting capacitor 206 comprises an eighth capacitor CW2 and a ninth capacitor CW3, and the eighth capacitor CW2 is connected to the ninth capacitor CW3 and connected between the positive and negative poles of the third output PW to absorb the high-amplitude ripple current, so that the voltage ripple of the third output is kept within a certain range.
Alternatively, as shown in fig. 5, the high voltage power driving unit includes:
a first high voltage switching transistor Q1, a second high voltage switching transistor Q2, a third high voltage switching transistor Q3, a fourth high voltage switching transistor Q4, a fifth high voltage switching transistor Q5, and a sixth high voltage switching transistor Q6;
the first high-voltage switching transistor Q1 is connected with the second high-voltage switching transistor Q2;
the third high-voltage switching transistor Q3 is connected to the fourth high-voltage switching transistor Q4;
the fifth high-voltage switching transistor Q5 is connected with the sixth high-voltage switching transistor Q6;
a connection circuit of the first high-voltage switching transistor Q1 and the second high-voltage switching transistor Q2, a connection circuit of the third high-voltage switching transistor Q3 and the fourth high-voltage switching transistor Q4, and a connection circuit of the fifth high-voltage switching transistor Q5 and the sixth high-voltage switching transistor Q6 are connected in parallel;
the vehicle-mounted power battery supplies electric energy to the motor through the on and off of the high-voltage switch triode.
Optionally, the electromagnetic compatibility circuit 200 of the power conversion circuit, connected to the high-voltage power driving unit, includes:
a potential at a point between the emitter of the first high-voltage switching transistor Q1 and the collector of the second high-voltage switching transistor Q2 is connected to a potential at a point of the first support capacitor 204, a potential at a point between the emitter of the third high-voltage switching transistor Q3 and the collector of the fourth high-voltage switching transistor Q4 is connected to a potential at a point of the second support capacitor 205, and a potential at a point between the emitter of the fifth high-voltage switching transistor Q5 and the collector of the sixth high-voltage switching transistor Q6 is connected to a potential at a point of the third support capacitor 206;
here, the connection of the high-voltage switching transistor to the high-voltage switching transistor may be a midpoint potential, which is selected as the point potential.
In a preferred embodiment of the present invention, since the parasitic resistance of the ceramic capacitor is small, the ceramic capacitor is preferred for all the capacitors to reduce the electromagnetic interference problem caused by the occurrence of the birth control resistance of the capacitor itself.
An embodiment of the utility model provides a still provide a motor controller, include: the motor controller comprises a low-voltage control unit, a power supply conversion circuit, a high-voltage power driving unit and the motor controller electromagnetic compatibility circuit;
in the working process of the controller, the high-voltage switch tube is frequently switched on and off and the power conversion circuit generates noise during working, so that the normal operation of the circuit or other equipment is interfered.
Electric automobile motor controller electromagnetic compatibility circuit can place in motor controller drive circuit power input port department for during restraining high-voltage switch pipe break-make, and the noise signal that the high frequency transformer during operation produced.
The embodiment of the utility model provides an electric automobile is still provided, including foretell machine controller.
The electromagnetic compatibility circuit is added at the power supply input port of the driving circuit of the motor controller of the electric automobile, and the ceramic capacitor is added at the secondary output port of the switching power supply, so that the interference noise generated when the motor controller operates is suppressed. The interference noise is prevented from influencing the normal operation of the circuit or other equipment, and the safety and the reliability of the electric automobile during operation are further improved.
The foregoing is directed to the preferred embodiments of the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the invention, and that such changes and modifications are intended to be included within the scope of the invention.
Claims (15)
1. An electromagnetic compatibility circuit for a motor controller, comprising:
a first electromagnetic compatibility circuit (100) provided in a low-voltage control unit of the motor controller;
the second electromagnetic compatibility circuit (200) is arranged in a power conversion circuit of the motor controller and is connected with the low-voltage control unit;
and the high-voltage power driving unit is connected with the second electromagnetic compatibility circuit (200).
2. The motor controller electromagnetic compatibility circuit according to claim 1, characterized in that said first electromagnetic compatibility circuit (100) comprises:
a capacitance circuit (101) that suppresses common mode noise;
an inductance that suppresses common mode noise;
an inductance circuit (102) for suppressing differential mode noise, connected to the capacitance circuit (101);
and a capacitor for suppressing the differential mode noise, connected to the inductance circuit (102).
3. The motor controller electromagnetic compatibility circuit according to claim 2, characterized in that said capacitive circuit (101) comprises:
a first Y capacitor (Y1), a second Y capacitor (Y2), a first three-terminal capacitor (C1) and a second three-terminal capacitor (C2);
one end of the first Y capacitor (Y1) is connected with the anode of the low-voltage power supply input port of the motor controller, and the other end of the first Y capacitor is grounded;
one end of the second Y capacitor (Y2) is connected with the negative electrode of the low-voltage power supply input port of the motor controller, and the other end of the second Y capacitor is grounded;
one end of the first three-terminal capacitor (C1) is connected in series with the positive electrode of the power supply, the other end of the first three-terminal capacitor is grounded, and the third terminal of the first three-terminal capacitor is connected with the inductive circuit;
one end of the second three-terminal capacitor (C2) is connected in series with the negative electrode of the power supply, the other end of the second three-terminal capacitor is grounded, and the third terminal of the second three-terminal capacitor is connected with the inductive circuit.
4. The motor controller electromagnetic compatibility circuit of claim 3, wherein said inductor comprises:
and one end of the first inductor (L1) is respectively connected with the first Y capacitor (Y1) and the second Y capacitor (Y2), and the other end of the first inductor (L1) is respectively connected with the first three-terminal capacitor (C1) and the second three-terminal capacitor (C2).
5. The motor controller electromagnetic compatibility circuit of claim 4, wherein said inductive circuit (102) comprises:
a second inductance (L2) and a third inductance (L3);
one end of the second inductor (L2) is connected with the positive electrode of a power supply, and the other end of the second inductor is connected with the first three-terminal capacitor (C1);
one end of the third inductor (L3) is connected with the negative electrode of a power supply, and the other end of the third inductor is connected with the second three-terminal capacitor (C2).
6. The motor controller electromagnetic compatibility circuit of claim 2, wherein said capacitor comprises:
a first X capacitor (X1), the first X capacitor (X1) is connected between the positive pole and the negative pole of the power supply.
7. The motor controller electromagnetic compatibility circuit according to claim 1, characterized in that said second electromagnetic compatibility circuit (200) comprises:
a resistance-capacitance RC absorption circuit for suppressing interference noise;
a switching diode connected in parallel with the RC absorption circuit;
the first group of capacitors is connected with the switch diode;
an output end;
a second set of capacitors to suppress electromagnetic noise connected in parallel with the first set of capacitors.
8. The motor controller electromagnetic compatibility circuit of claim 7 wherein said RC snubber circuit for suppressing interference noise comprises:
a first RC absorption circuit (201), a second RC absorption circuit (202), and a third RC absorption circuit (203);
the first RC absorption circuit (201) comprises a first resistor (RU1) and a first capacitor (CU1), and the first resistor (RU1) is connected with the first capacitor (CU 1);
the second RC absorption circuit (202) comprises a second resistor (RV1) and a second capacitor (CV1), and the second resistor (RV1) is connected with the second capacitor (CV 1);
the third RC absorption circuit (203) comprises a third resistor (RW1) and a third capacitor (CW1), and the third resistor (RW1) is connected with the third capacitor (CW 1).
9. The motor controller electromagnetic compatibility circuit of claim 8, wherein said switching diode comprises:
a first switching diode (DU1), a second switching diode (DV1), and a third switching diode (DW 1);
the first switching diode (DU1) is connected in parallel with the first RC absorber circuit (201);
the second switching diode (DV1) is connected in parallel with the second RC absorption circuit (202);
the third switching diode (DW1) is connected in parallel with the third RC absorption circuit (203).
10. The motor controller emc circuit of claim 7, wherein the output comprises:
a first output (PU), a second output (PV) and a third output (PW);
the first group of capacitors for suppressing common mode noise comprises:
a second X capacitance (XU1), a third X capacitance (XV1) and a fourth X capacitance (XW 1);
the second X capacitor (XU1) is connected between the positive electrode and the negative electrode of the first output end (PU);
the third X capacitor (XV1) is connected between the positive and negative poles of the second output terminal (PV);
the fourth X capacitor (XW1) is connected between the positive pole and the negative pole of the third output end (PW).
11. The motor controller emc circuit of claim 10 wherein said second set of capacitors to suppress electromagnetic noise comprises:
a first support capacitance (204), a second support capacitance (205), and a third support capacitance (206);
the first supporting capacitor (204) comprises a fourth capacitor (CU2) and a fifth capacitor (CU3), and the fourth capacitor (CU2) is connected with the fifth capacitor (CU3) and connected between the positive pole and the negative pole of the first output end (PU);
the second supporting capacitor (205) comprises a sixth capacitor (CV2) and a seventh capacitor (CV3), the sixth capacitor (CV2) is connected with the seventh capacitor (CV3) and is connected between the positive pole and the negative pole of the second output terminal (PV);
the third supporting capacitor (206) comprises an eighth capacitor (CW2) and a ninth capacitor (CW3), and the eighth capacitor (CW2) is connected with the ninth capacitor (CW3) and is connected between the positive pole and the negative pole of the third output terminal (PW).
12. The motor controller emc circuit of claim 11, wherein the high voltage power drive unit comprises:
a first high-voltage switching transistor (Q1), a second high-voltage switching transistor (Q2), a third high-voltage switching transistor (Q3), a fourth high-voltage switching transistor (Q4), a fifth high-voltage switching transistor (Q5), and a sixth high-voltage switching transistor (Q6);
the first high-voltage switching transistor (Q1) is connected with the second high-voltage switching transistor (Q2);
the third high-voltage switching transistor (Q3) is connected with the fourth high-voltage switching transistor (Q4);
the fifth high-voltage switching transistor (Q5) is connected with the sixth high-voltage switching transistor (Q6);
the first high-voltage switching transistor (Q1) is connected in parallel with a connection circuit of the second high-voltage switching transistor (Q2), a connection circuit of the third high-voltage switching transistor (Q3) is connected in parallel with a connection circuit of the fourth high-voltage switching transistor (Q4), and a connection circuit of the fifth high-voltage switching transistor (Q5) is connected in parallel with a connection circuit of the sixth high-voltage switching transistor (Q6).
13. The motor controller electromagnetic compatibility circuit of claim 12, wherein said power converter circuit electromagnetic compatibility circuit (200) is connected to said high voltage power drive unit and comprises:
a point potential between the emitter of the first high-voltage switching transistor (Q1) and the collector of the second high-voltage switching transistor (Q2) is connected to a point potential of the first supporting capacitor (204), a point potential between the emitter of the third high-voltage switching transistor (Q3) and the collector of the fourth high-voltage switching transistor (Q4) is connected to a point potential of the second supporting capacitor (205), and a point potential between the emitter of the fifth high-voltage switching transistor (Q5) and the collector of the sixth high-voltage switching transistor (Q6) is connected to a point potential of the third supporting capacitor (206).
14. A motor controller, comprising: a low voltage control unit, a power converter circuit and a high voltage power drive unit, further comprising a motor controller electromagnetic compatibility circuit as claimed in any one of claims 1 to 13.
15. An electric vehicle characterized by comprising the motor controller according to claim 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921191226.9U CN210478413U (en) | 2019-07-26 | 2019-07-26 | Motor controller electromagnetic compatibility circuit, motor controller and electric automobile |
Applications Claiming Priority (1)
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| CN201921191226.9U CN210478413U (en) | 2019-07-26 | 2019-07-26 | Motor controller electromagnetic compatibility circuit, motor controller and electric automobile |
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