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在电动车用感应电动机驱动系统最大效率控制技术基础上，着重分析了转子磁通的变化规律，并与Ｕ／ｆ恒定控制、矢量控制作了比较和分析。
Based on the maximum efficiency control technology of induction motor drive system for electric vehicle, the variation law of rotor flux is emphatically analyzed and compared with U / f constant control and vector control.