動態電壓恢復器與其瞬變電壓控制機制

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

104104913

專利證號

I 556078

專利獲證名稱

動態電壓恢復器與其瞬變電壓控制機制

專利所屬機關 (申請機關)

國立虎尾科技大學

獲證日期

2016/11/01

技術說明

動態電壓恢復器（Dynamic Voltage Restorer：DVR）是近年來解決上述問題如電壓驟降、電壓突升等問題的重要方法。其以串聯的方式來補償電源電壓之變動，可達到較佳的系統效率及穩定輸出電壓。本發明關於一種動態電壓恢復器與其瞬變電壓控制機制。此動態電壓恢復器係用以補償電壓驟降以及電壓突升。此動態電壓恢復器主要是包括一變壓器以及一雙向全橋交流對交流轉換器。此雙向全橋交流對交流轉換器具有正負電壓增益，並且以順序導通脈波寬度調變方式，完成電壓極性可逆之交流轉換器。而本發明的雙向全橋轉換器經由低頻變壓器與輸入電壓串聯達到電壓補償穩定輸出功能。 A dynamic voltage restorer (DVR) and a transient voltage control mechanism are provided in the present invention. The DVR is for solving the voltage swell and the voltage sag of the AC line voltage. The DVR includes a transformer and a bi-directional full bridge AC to AC converter. The bi-directional full bridge AC to AC converter is designed with a positive voltage gain and a negative voltage gain, and its control mechanism adopts a sequential conduction PWM so as to convert an AC voltage with reversible polarity. The bi-directional full bridge AC to AC converter of the present invention is coupled to the low-frequency transformers, thus the compensation voltage is coupled to the input AC voltage to stabilize and compensate the output AC voltage.

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