CAJ | 학술논문

如何实现快速准确的并网同步是非理想电网电压情况下并网变换器安全高效运行的重要前提。针对电网电压不平衡、谐波和直流分量影响同步精度的问题，提出高阶解耦复数滤波并网同步方法，建立系统数学模型，进行系统稳定性分析和参数设计，并提出3种方案解决电压直流分量引起并网同步误差的问题，最后在TMS320F2812 DSP数字平台上对提出的方法进行实验研究，实验结果验证了提出方法的可行性和有效性。
여하실현쾌속준학적병망동보시비이상전망전압정황하병망변환기안전고효운행적중요전제。침대전망전압불평형、해파화직류분량영향동보정도적문제，제출고계해우복수려파병망동보방법，건립계통수학모형，진행계통은정성분석화삼수설계，병제출3충방안해결전압직류분량인기병망동보오차적문제，최후재TMS320F2812 DSP수자평태상대제출적방법진행실험연구，실험결과험증료제출방법적가행성화유효성。
Fast and accurate grid synchronization is of great importance for effectively operating the grid-connected converters under non-ideal grid voltages. In order to solve the problem of the negative effect of the unbalanced, distorted, dc-offset grid voltages on the accuracy of grid synchronization, a new high-order decoupled complex filter based solution is proposed in this paper. The mathematical model of the system is derived. The system stability analysis and parameter tuning procedure are discussed. Three solutions are presented to deal with the adverse effect of the dc component in voltages on the grid synchronization. Finally, the experimental tests are carried out on the TMS320F2812 DSP. The experimental results verify the effectiveness of the proposed method.