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发明公开
CN103973190A 无传感器的电动机控制 失效 - 权利终止

无传感器的电动机控制
摘要：
本发明涉及无传感器的电动机控制。一种电动机控制系统包括功率逆变器和控制电路，所述控制电路被配置为根据基于电压的控制模式中的目标电压或根据基于电流的控制模式中的目标电流控制所述功率逆变器。所述控制器通过操作将所述控制电路的操作在所述基于电压的控制模式与所述基于电流的控制模式之间切换。所述控制器可被配置为以较低的电动机操作速度在所述基于电流的控制模式中操作所述控制电路，此时定子电流余量更重要，并且可被配置为以较高的电动机操作速度在所述基于电压的控制模式中操作所述控制电路，此时定子电压余量更重要。
摘要（英）：

An electric motor control system includes a power inverter and control circuitry configured to control the power inverter either according to a target voltage in a voltage-based control mode or according to a target current in a current-based control mode. A controller is operable to switch operation of the control circuitry between the voltage-based control mode and the current-based control mode. The controller may be configured to operate the control circuitry in the current-based control mode at lower motor operating speeds where stator current margin is of greater significance, and to operate the control circuitry in the voltage-based control mode at higher motor operating speeds where stator voltage margin is of greater significance.

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