CAJ | 학술논문

模块化多电平换流器的控制器是在d-q旋转坐标系中建立电压外环和电流内环的双闭环PI控制系统,滑模控制策略由于其脉冲生成方式的独特性而没有应用于模块化多电平换流器的控制领域.在深入研究两种控制策略的基础上,提出一种新型滑模控制系统,该控制系统减少一个电压外环PI调节环节,简化系统的参数调节过程,提高系统的自适应性.最后,在MATLAB/Simulink中搭建仿真模型,验证了该控制系统的可行性和优越性.
모괴화다전평환류기적공제기시재d-q선전좌표계중건립전압외배화전류내배적쌍폐배PI공제계통,활모공제책략유우기맥충생성방식적독특성이몰유응용우모괴화다전평환류기적공제영역.재심입연구량충공제책략적기출상,제출일충신형활모공제계통,해공제계통감소일개전압외배PI조절배절,간화계통적삼수조절과정,제고계통적자괄응성.최후,재MATLAB/Simulink중탑건방진모형,험증료해공제계통적가행성화우월성.
At present, controllers of MMC mostly adopt the double closed loops PI control system with voltage and current loop based on d-q coordinate, and the sliding-mode control strategy hasn't yet been used to MMC control due to its unique pulse generation style. After in-depth study of the two control strategies, this paper proposes a new sliding-mode control system, which reduces the PI regulation link, simplifies the debugging of parameters and improves the adaptiveness of the system. Finally, a simulation model is constructed in MATLAB/Simulink and the simulation results validate the feasibility and superiority of the proposed control strategy.