Starting from a new aspect, it explained a new way to realize energy saving without retrofitting DCS and control logic at site in the application of high voltage frequency conversion.

从全新的角度，诠释了高压变频在系统应用中不对DCS和现场控制逻辑改造，即可实现节能应用的一种新方法。

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By comparing the characteristic of different technology, the influence on unit stable running by high voltage frequency conversion is summarized. Also the development tendency is predicted.

对不同形式的高压变频技术特点进行了比较，总结了高压变频装置对机组稳定运行的影响及高压变频技术的发展趋势。

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Adopt IGBT frequency conversion of German Siemens and voltage feedback series resonance circuit. The conversion efficiency is reaching up to above 97.5%.

采用德国西门子IGBT变频，电压反馈串联谐振电路。变换效率高达97.5%以上。

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