The present disclosure provides "motorized vehicle control for detecting the state of each phase of a three-phase motor". An electrically powered vehicle includes: a traction battery; an inverter coupled to the traction battery and operable to convert direct current (DC) power from the traction battery to three-phase alternating current (AC) power; a three-phase electric machine coupled to the inverter through an associated cable; a sensor configured to generate a signal associated with a rotational position of a rotor of the three-phase motor; a current sensor associated with each cable/each phase of the three-phase electric machine; and a controller programmed to: generate a non-zero phase current at each of a plurality of predetermined regularly spaced rotational positions by adjusting a rotor angle or injecting a q-axis current; commanding the inverter to inject a test current pulse to the motor; and generate a diagnostic signal to detect cable or current sensor anomalies in the single phase in response to any one of the current sensor signals being less than an associated threshold.
本公开提供“用于检测三相马达的各个相的状态的电动化车辆控制”。一种电动化车辆包括:牵引电池;逆变器,其联接到牵引电池并且可操作以将来自牵引电池的直流(DC)电力转换为三相交流(AC)电力;三相电机,其通过相关联的电缆联接到逆变器;传感器,其被配置为产生与三相电机的转子的旋转位置相关联的信号;电流传感器,其与三相电机的每根电缆/每个相相关联;以及控制器,其被编程为:通过调整转子角度或注入q轴电流在多个预定规则间隔的旋转位置中的每个处产生非零相电流;命令逆变器向电机注入测试电流脉冲;并且响应于电流传感器信号中的任一个小于相关联的阈值而产生诊断信号以检测单相中的电缆或电流传感器异常。
Electrically powered vehicle control for detecting state of each phase of three-phase motor
用于检测三相马达的各个相的状态的电动化车辆控制
2022-05-27
Patent
Elektronische Ressource
Chinesisch
IPC: | H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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 , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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