High speed, big package, ac motor drives beam directly, controlled by PLC. Stepless speed regulated by inverter, winding at a constant linear speed.

高速度、大卷装、交流电机直接拖动经轴，并由plc控制，变频器实现无级调速，恒线速卷绕。

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The precise motor parameters affect the quality of the motor control system seriously in high performance ac drives of induction machine.

感应电机高性能交流调速方法中，电机参数的准确性严重影响着电机控制系统的控制品质。

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Direct Torque Control (DTC) has the advantages of less reference frame commutation-computation and less influence by motor parameter variations in AC drives system.

交流调速中直接转矩控制具有坐标变换运算量小和受电机参数变化影响小的特点。

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The battery powers a high-response 80kW AC synchronous motor, rated at 107 horsepower and 187 lb-ft of torque, which drives the front wheels through a single speed reducer.

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