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.
基于DSP的电动汽车用交流电机的直接转矩控制是电机高性能交流变频调速的新技术之一。
Direct Torque Control (DTC) of induction motor based on DSP is new technology of high performance AC — frequency conversion — rate of regulation.
MGTY-300/710电牵引采煤机采用了变频调速与直接转矩控制技术，是一种新型的电牵引采煤机。
MGTY-300/710 D. C. electricity-powered shearer is a new type shearer, which a frequency converter and direct torque control are employed.
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