摘要
针对目前动态电压恢复器(Dynamic Voltage Restorer,DVR)补偿能力有限、储能电容较大等问题,提出了一种改进的DVR拓扑结构.新的拓扑结构通过一个二极管不可控整流器从负载侧上获得能量,再利用升压斩波电路的升压特性,把直流侧电压稳定在一定范围内,保证在电网电压发生跌落严重的情况下,逆变器仍能正常维持工作.它可以有效地控制逆变器直流侧电压稳定,增大了补偿电压的范围,延长补偿时间,从而提高DVR的补偿能力.本文详细介绍了改进的拓扑结构主电路,对boost的功能和参数设计进行了分析.最后通过仿真实验来证明提出的新型DVR系统可行性.
Focus on the limited compensation of Dynamic Voltage Restorer（DVR） with a larger energy storage capacitor,a new type of DVR topology was proposed.The new topology was controlled by a diode rectifier gaining energy from the load side.With the use of the step-up features of step-up chopper circuit（boost）,the DC side voltage was stable within a certain range to ensure that when the power voltage dropped occurring seriously,the inverter could still work normally.It can effectively control the inverter DC side voltage,increase the compensation voltage range,extend compensation time and enhance the ability to compensate.A new topology of the main circuit was introduced in detail,and the boost function and parameter designing were analyzed.Finally,simulation experiment demonstrated the feasibility of proposed new DVR system.
出处
《佳木斯大学学报（自然科学版）》
CAS
2010年第6期891-893,896,共4页
Journal of Jiamusi University：Natural Science Edition
