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Analysis and synthesis of fractional order repetitive control for power converters

机译:功率变换器分数阶重复控制的分析与综合

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Repetitive control is widely employed in power converters due to its zero-error compensation of periodic signals. However, conventional repetitive control is sensitive to frequency variations of the periodic signals. For example, in grid-connected applications, conventional repetitive controlled power converters will produce higher harmonics distortion under grid frequency variations. Based on finite impulse response (FIR) fractional delay filters, fractional order repetitive control (FORC) scheme provides fast online computation and frequency adaptability to compensate for harmonics in grid-connected applications at fixed sampling time. In this paper the analysis and synthesis of the proposed FORC are comprehensively investigated. A stability criterion for FORC systems is derived. As a case study, experimental tests on a standalone single-phase PWM inverter, supplying a non-linear rectifier load, are provided to evaluate the effectiveness of the proposed FORC. (C) 2015 Elsevier B.V. All rights reserved.
机译:重复控制由于其对周期信号的零误差补偿而被广泛应用于功率转换器中。然而,常规的重复控制对周期性信号的频率变化敏感。例如,在并网应用中,传统的重复控制功率转换器将在电网频率变化下产生更高的谐波失真。基于有限脉冲响应(FIR)分数延迟滤波器的分数阶重复控制(FORC)方案可提供快速的在线计算和频率适应性,以补偿固定采样时间并网应用中的谐波。本文对提出的FORC的分析和综合进行了全面研究。得出FORC系统的稳定性判据。作为案例研究,在提供非线性整流器负载的独立单相PWM逆变器上进行了实验测试,以评估所提出的FORC的有效性。 (C)2015 Elsevier B.V.保留所有权利。

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