This paper introduces the features of the frequency control technique of AC motor, and expounds the present situation, developing trends and applicability of the converter technique.
介绍了交流电动机变频调速技术的特点，阐述了变频技术的现状和发展趋向及其应用领域。
With this technique, the effect of equivalent high switching frequency converter has been obtained with low switching frequency converter.
提出了基于载波组合相移技术的电流型电力有源滤波器，在较低的开关频率下实现了等效的高频载波效果。
The technique of audio frequency slag melting has been exploited for top and bottom combined blown converter in 150 t combined blowing converter of Tangshan Iron and Steel Company.
在唐钢150t复吹转炉上开发出适用于百吨以上顶底复吹转炉的音频化渣技术，并根据音频曲线实现了转炉吹炼操作的量化分级管理。
Moreover, the size and weight of the converter can also be reduced by interleaving technique and increasing the frequency.
通过交错控制和提高开关频率，大大减小了变换器的体积和重量。
The principle of cascade H-bridge converter is analyzed. Variable-Frequency Carrier Bands PWM(VFCB-PWM) technique is discussed. Cascade H-bridge converter based on VFCB-PWM technique is proposed.
分析了级联H桥型变换器的工况，讨论了载波带频率变化的PWM（VFCB-PWM）技术，提出了基于VFCB-PWM技术的级联H桥型多电平变换器。
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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