高压电器Issue(12)：168-173,6.DOI:10.13296/j.1001-1609.hva.2015.12.029
基于CPS-SVPWM调制的链式STATCOM直流侧电压控制策略
Cascade-STATCOM DC Voltage Control Strategy Based on CPS-SVPWM Modulation
摘要
Abstract
H bridge cascaded chain STATCOM can be used for reactive power compensation in the high voltage (10 kV or 35 kV) systems. When the traditional SPWM modulation method is used, the disadvantage is low utilization rate of device’s DC voltage, and it needs multiple cascaded H bridges which causes high cost and low reliability. Space vector modulation(SVPWM) technology has the advantage of improving the utilization ratio of voltage and effectively reducing the number of H bridge, but it’s too complicated for computation when the level number is large. Therefore, this paper proposes a simplified SVPWM algorithm which applies to the star connection chain STATCOM. What’s more, the SVPWN algorithm combines the two level space vector modulation technique with carrier phase-shifted modulation technology together, which effectively improves the utilization rate of DC voltage and reduces the complexity of calculation. On this basis, in order to realize stability and balance of voltage of DC side in each H bridge, this paper puts forward a hierarchical control strategy of DC voltage. Simulation model is built in the simulation software PSCAD, which verified the feasibility and accuracy of modulation algorithm and control strategy of the DC voltage.关键词
H桥级联/STATCOM/多电平/简化SVPWM/分层电压控制Key words
cascade H-bridge/STATCOM/multi-level/simplified SVPWM/hierarchical voltage control引用本文复制引用
王宝安,白晨阳,陈豪,商娇..基于CPS-SVPWM调制的链式STATCOM直流侧电压控制策略[J].高压电器,2015,(12):168-173,6.基金项目
江苏省自然科学基金资助项目(BK20130627)。Project Supported by the Natural Science Foundation of Jiangsu Province(BK20130627) （BK20130627）
