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US 12,447,867 B2Granted
Method, apparatus, device, and system for processing asynchronous motor, and transportation means
AssigneeHuawei Digital Power Technologies Co., Ltd.
InventorsChaoqiang Wu, Mengxuan Lin, Chaojie Shi
Life of this patent
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Abstract
A method for processing an asynchronous motor includes obtaining indication trigger information; and injecting, in response to the indication trigger information, a first current into a stator winding of the asynchronous motor, where the first current is for generating heat without a torque for the asynchronous motor, and the heat heats a battery pack through a heat exchanger.
Claims20
A method for processing an asynchronous motor comprising:
- obtaining indication trigger information;
- injecting, in response to the indication trigger information, a first current into a stator winding of the asynchronous motor;
- generating, using the first current, heat without generating torque in the asynchronous motor;
- heating a battery pack with the heat through a heat exchanger;
- and
- injecting a second current into coils of the stator winding comprising a U1-U2 coil, a V1-V2 coil, and a W1-W2 coil after superimposing with the first current when the asynchronous motor is in a running state, wherein the second current is a three-phase current for driving the asynchronous motor to run, wherein the first current comprises IU, IV, and IW, wherein a first amplitude of a third current in one of the U1-U2 coil, V1-V2 coil, or the W1-W2 coil is twice of a second amplitude of each of a fourth current and a fifth current of other two coils, and wherein a first direction of the third current is opposite to second directions of the fourth current and the fifth current.
3 more elements
A system comprising:
- an asynchronous motor comprising a stator winding, wherein the asynchronous motor is a three-phase asynchronous motor comprising a U1-U2 coil, a V1-V2 coil, and a W1-W2 coil;
- a power system coupled to the asynchronous motor;
- a motor controller coupled to the power system and configured to:
- obtain indication trigger information;
- control, in response to the indication trigger information, the power system to inject a first current into the stator winding, wherein the first current comprises IU, IV, and IW;
- generate, with the first current, heat without generating torque in the asynchronous motor;
- and
- control the power system to inject a second current into coils of the stator winding after superimposing with the first current when the asynchronous motor is in a running state, wherein a first amplitude of a third current in one of the U1-U2 coil, V1-V2 coil, or the W1-W2 coil is twice of a second amplitude of each of a fourth current and a fifth current of other two coils, and wherein a first direction of the third current is opposite to second directions of the fourth current and the fifth current;
- a battery pack coupled to the motor controller;
- and
- a heat exchanger coupled to the asynchronous motor and the battery pack and configured to provide heating to the battery pack using the heat.
8 more elements
A vehicle, comprising:
- a coolant;
- and
- a system comprising:
- an asynchronous motor comprising a stator winding, wherein the asynchronous motor is coupled to the coolant, and wherein the asynchronous motor is a three-phase asynchronous motor comprising a U1-U2 coil, a V1-V2 coil, and a W1-W2 coil;
- a power system coupled to the asynchronous motor;
- a motor controller coupled to the power system and configured to:
- obtain indication trigger information;
- control, in response to the indication trigger information, the power system to inject a first current into the stator winding, wherein the first current comprises IU, IV, and IW;
- generate, with the first current, heat for the coolant without generating torque;
- and
- control the power system to inject a second current into coils of the stator winding after superimposing with the first current when the asynchronous motor is in a running state, wherein a first amplitude of a third current in one of the U1-U2 coil, V1-V2 coil, or the W1-W2 coil is twice of a second amplitude of each of a fourth current and a fifth current of other two coils, and wherein a first direction of the third current is opposite to second directions of the fourth current and the fifth current;
- a battery pack coupled to the motor controller;
- and
- a heat exchanger coupled to the battery pack and the asynchronous motor and configured to provide heating to the battery pack using the heat provided to the coolant.
11 more elements
Dependencies are inferred from the claim text.