该变频器采用单元串联多电平技术，可以得到阶梯SPWM波形，无需输出滤波器，可直接驱动普通电动机。
The (frequency) converter (adopted) multilevel technology with cells series, which could obtain stepped SPWM waveforms, and could drive ordinary motor directly with no output filter.
这种电动机的定子绕组由一个多匝绕组和一个少匝绕组串联而成。
The stator winding of the motor is made up of a multi-circle winding and a minor-circle winding in series.
该文提出一种串联磁路结构双定子混合式直接驱动电动机方案。
In this paper, a novel double-stator hybrid direct drive motor scheme is presented with series magnetic circuit.
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