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| 摘要: |
| 直流电容器上所存储的能量大小直接决定了动态电压恢复器(DVR)对电压跌落补偿的能力。提出了一种新颖的多DVR共用直流电容的方法,共用电容可以在补偿电压跌落的同时进行能量的补充,省去了为给电容补充能量而专门配制的整流设备,节约了DVR成本。对DVR控制电压跌落的策略进行了分析,结果表明在使用最小能量补偿法时,这种方法能可靠补偿线路深度、长时间的电压跌落。仿真表明了结果的正确性。 |
| 关键词: 电压跌落,DVR,公用直流电容,最小能量补偿 |
| DOI： |
| 分类号:TM732 |
| 基金项目: |
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| Method for reliable and economical operation of DVR |
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CHEN Yong CHEN Jin-cao
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| Abstract: |
| The energy stored in DC capacitor decides the compensation performance of DVR(Dynamic Voltage Restorer) on voltage sag.A method using a common DC capacitor shared by multi DVRs is presented,which can compensate the voltage sag and complement the energy at the same time.No more special rectifiers are needed.The control strategy of DVR for voltage sag is analyzed,and the minimal energy compensation method is found to be reliable and effective for deep and long-duration voltage sages.Simulations verify its correctness. |
| Key words: voltage sag,DVR,common DC capacitor,minimal energy compensation |
