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标题：单相PWM整流器低次电流谐波抑制方法研究 |
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作者：刘通，刘文生，赵卫 |
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| 2018年第4期 访问次数：948次 |
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摘要：在电力牵引传动系统中，为抑制整流器网侧低次电流谐波，分析了脉动电压对网侧电流的影响机理，在离散域，提出了电压环和电流环控制方法的改进方案，电压环采用陷波器和低通波器组合的方法滤除脉动电压，而在电流环嵌入奇次谐波重复控制器，讨论了奇次重复控制器的设计方法和系统跟踪电流指令能力，给出电流环控制参数的选取原则。实现电压环消除脉动电压的影响，电流环抑制网侧的电流谐波。通过仿真验证方法的有效性和正确性。
关键词：整流器；脉动电压；低次谐波；陷波器；奇次重复控制
Abstract: In the electric traction and transmission control system, in order to suppress the loworder current harmonics on the side of the rectifier, the influence mechanism of the ripple voltage on the grid side current was analyzed. In the discrete domain, an improved scheme of voltage loop and current loop control algorithm was proposed. And the combination of the notch filter and the lowwave filter filter out the ripple voltage, and in the current loop embedded odd harmonic repeat controller, discussed the odd repeat controller design method and system tracking current command capability, gave the current loop selection of control parameters. To achieve the effect of voltage ring to eliminate the ripple voltage, the current loop suppresses the current harmonics on the grid side. The validity and correctness of the method were verified by simulation.
Key words: rectifier; pulsating voltage; loworder harmonic; notch; oddorder repetition control |
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