CAJ | 학술논문

　　并联有源电力滤波器是电网中谐波治理的一个重要组成部分。在实际工程应用时，受环境变化和系统运行工况随机变化的影响，有源电力滤波器的某些元器件参数及电网电压和频率会发生摄动，消弱了谐波抑制效果。文中提出一种并联有源电力滤波器谐波电流跟踪补偿和直流侧电容电压稳定的滑模统一控制策略。通过将滑模函数解耦，建立含参数摄动的并联有源电力滤波器系统的状态空间数学模型，推导出了滑动模态的稳定性条件，同时证明了该控制方法对系统的参数摄动具有很好的抑制效果。仿真结果表明该方法不仅设计简单、易于实现，而且具有很强的鲁棒性。
　　병련유원전력려파기시전망중해파치리적일개중요조성부분。재실제공정응용시，수배경변화화계통운행공황수궤변화적영향，유원전력려파기적모사원기건삼수급전망전압화빈솔회발생섭동，소약료해파억제효과。문중제출일충병련유원전력려파기해파전류근종보상화직류측전용전압은정적활모통일공제책략。통과장활모함수해우，건립함삼수섭동적병련유원전력려파기계통적상태공간수학모형，추도출료활동모태적은정성조건，동시증명료해공제방법대계통적삼수섭동구유흔호적억제효과。방진결과표명해방법불부설계간단、역우실현，이차구유흔강적로봉성。
In the power grid, shunt-wound active power filter plays an important part in harmonic elimination and the device parameter perturbation in SAPF or voltages and frequency variation in the power grid weaken harmonic suppression effect of SAPF due to random variation of both ambient environment and operating conditions. So this paper introduces an unified control strategy used for harmonic current tracking and DC capacitor voltage stability of SAPF which is realized by sliding mode variable structure control(SMVSC). The sliding mode function is decoupled and the system mathematical model with parameter perturbations is set up, but the stability condition of sliding mode is presented, and good effect for parameter perturbation is proved. Through the simulation, the results show that the presented method is simple to design,easy to realize and has strong robustness.