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.
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。
This paper introduces the fully digit fieldbus control drive system which consists of PLC and frequency converter. The structure and application of the system are also discussed in detail.
介绍了以P LC为控制单元，变频器为执行单元的全数字现场总线控制传动系统，重点讨论了系统的构成和实际应用。
This specific frequency converter has the advantages of simple hardware, small volume and high ratio of performance to cost. It has applied successfully in AC motor drive of weft storage.
该专用变频器具有硬件简单、体积小、性能价格比高等特点，已成功地应用于纺机储纬器的交流电机驱动中。
Two-step drive device make the force-enduring reasonable, and the frequency converter control the motor, it is easier to adjust the speed of spindle.
二级传动结构，使受力更合理，变频控制电机，可以方便调整所需转速。
The carrier phase shift technique based parallel back-to-back PWM converter is used on the direct-drive wind power system, with a switching frequency as low as 1 kHz.
直驱型风力发电系统需要全功率变流器，在现有器件功率水平以及开关频率等诸多因素制约下，变流器直接并联的方式具备结构简单、模块化设计、易扩展的优点。
The carrier phase shift technique based parallel back-to-back PWM converter is used on the direct-drive wind power system, with a switching frequency as low as 1 kHz.
直驱型风力发电系统需要全功率变流器，在现有器件功率水平以及开关频率等诸多因素制约下，变流器直接并联的方式具备结构简单、模块化设计、易扩展的优点。
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