In this paper, a voltage oriented control strategy for three-level PWM rectifier based on Sliding Mode Control (SMC) is introduced in order to obtain fast and accurate response of dc-bus voltage. To verify the validit...In this paper, a voltage oriented control strategy for three-level PWM rectifier based on Sliding Mode Control (SMC) is introduced in order to obtain fast and accurate response of dc-bus voltage. To verify the validity of the analysis and the feasibility of the proposed control method a set of simulation tests have been conducted using Matlab/Simulink. The simulation results show that compared to the conventional PI controller, the SMC can reduce drastically the three-level rectifier’s voltage fluctuation and improve the dynamic response of dc-bus significantly.展开更多
围绕通信不间断电源(Uninterruptible Power Supply,UPS)系统中多电平脉冲宽度调制(Pulse Width Modulation,PWM)逆变拓扑的谐波控制展开研究,深入分析多电平逆变结构在提升输出波形质量和降低谐波失真方面的技术优势。结合通信电源对...围绕通信不间断电源(Uninterruptible Power Supply,UPS)系统中多电平脉冲宽度调制(Pulse Width Modulation,PWM)逆变拓扑的谐波控制展开研究,深入分析多电平逆变结构在提升输出波形质量和降低谐波失真方面的技术优势。结合通信电源对高可靠性和低干扰的实际需求,构建基于PWM优化与滤波器参数设计的复合型谐波控制策略。通过建模仿真实验对不同调制方式与滤波结构进行对比分析,结果表明所提方法在降低总谐波失真、提升系统稳定性与电能质量方面具有明显优势,可为通信UPS系统的结构优化和工程应用提供理论支撑与实践参考。展开更多
文摘In this paper, a voltage oriented control strategy for three-level PWM rectifier based on Sliding Mode Control (SMC) is introduced in order to obtain fast and accurate response of dc-bus voltage. To verify the validity of the analysis and the feasibility of the proposed control method a set of simulation tests have been conducted using Matlab/Simulink. The simulation results show that compared to the conventional PI controller, the SMC can reduce drastically the three-level rectifier’s voltage fluctuation and improve the dynamic response of dc-bus significantly.
文摘围绕通信不间断电源(Uninterruptible Power Supply,UPS)系统中多电平脉冲宽度调制(Pulse Width Modulation,PWM)逆变拓扑的谐波控制展开研究,深入分析多电平逆变结构在提升输出波形质量和降低谐波失真方面的技术优势。结合通信电源对高可靠性和低干扰的实际需求,构建基于PWM优化与滤波器参数设计的复合型谐波控制策略。通过建模仿真实验对不同调制方式与滤波结构进行对比分析,结果表明所提方法在降低总谐波失真、提升系统稳定性与电能质量方面具有明显优势,可为通信UPS系统的结构优化和工程应用提供理论支撑与实践参考。
