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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This technique dramatically extends the potential of wind-up power, and brings more power-hungry devices, such as the landmine detector, within its scope.

ECONOMIST: Clockwork technology