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内置式永磁同步电机弱磁调速控制

, PP. 54-59

Keywords: 内置式,永磁同步电机,弱磁,调速,控制

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Abstract:

在对内置式永磁同步电机数学模型深入研究基础上,提出了一种最优弱磁路径控制策略,该控制策略是基于由直轴电流Id和交轴电流Iq所构成的状态空间,以最大电流曲线、最大磁链曲线和最小磁链转矩比曲线为边界而提出的一种最优弱磁路径。该控制策略以实现在电机任何转速下输出力矩范围最大化和电机电枢电流最小化为目标,指出了电机在各种转速下的力矩控制方法,充分挖掘电机的自身潜能,有效保证高速高精型数控机床的加工运行。仿真和实验研究表明,该控制策略可以大大提高电机的调速范围,同时保证转矩有良好的可控性。

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