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.
使用这种方式构建的易维护代码将降低调试、修复和扩展代码所面临的风险。
Building easily maintainable code in this manner will enable you to debug, fix, and extend your code with lower risk.
海洋平台电力配电自动化系统的基本框架结构为：结构上采用两级控制，三层网络方式，安全可靠，先进易扩展。
The sea platform electric power distribution automated system basic structure is: In the structure USES two level control, three networks ways, safe reliable, advanced are easy to expand.
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