CAJ | 학술논문

电压源型逆变器(voltage source inverters，VSI)通常使用电压电流双闭环控制，也有新型的单电压环控制被提出；同时为了抑制低次谐波，一般引入并联的谐振控制器结构。首先从传递函数的角度，详细对比双环和单环控制，得出开关频率较低时，两种控制策略的动态性能差别不大的结论；
전압원형역변기(voltage source inverters，VSI)통상사용전압전류쌍폐배공제，야유신형적단전압배공제피제출；동시위료억제저차해파，일반인입병련적해진공제기결구。수선종전체함수적각도，상세대비쌍배화단배공제，득출개관빈솔교저시，량충공제책략적동태성능차별불대적결론；
Voltage Source Inverters (VSI) commonly use the double loop control strategy, while new single loop control strategies have been proposed. In order to suppress the low-order harmonics, parallel resonant controllers are also introduced. This paper firstly makes a comparison of single loop and double loop control strategies, as viewed from transfer functions, and concludes that these two control strategies have almost the same dynamic response under low switching frequencies. Then deep analysis is carried out on problems existing in the present parallel resonant controllers design. On this basis, a novel single loop control strategy based on phase lead correction is proposed. It can simplify the control parameters designing, and dramatically improves the performance of VSI by adjusting the magnitude-phase characteristics of the controlled object. The analysis and experimental results show that the novel single-loop controller maintains low total harmonic distortion content and fast transient response.