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电网技术  2010 

电动汽车双馈电机转子电流最小化控制

, PP. 122-127

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Abstract:

提出了一种基于双馈电机的电动汽车驱动系统。该系统低速运行状态类似同步机,特性硬;超同步运行时定、转子同时输入能量,调速范围宽、动态响应快;变频器发生严重故障的情况下,电机仍可作为感应电机使用。针对双馈电机定、转子能量双向流通使低速电机电流及驱动功率过大的缺点,采用无功功率控制的方法,降低转子无功功率,实现了转子电流最小化,减小了驱动装置中开关元件的容量等级,获得了较同等级异步电机更低的损耗。利用Matlab/Simulink对系统的运行性能进行了分析,结果验证了该控制策略的正确性和可行性。

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