Variable Duty Cycle Control with PSO-PI Controller for Power Factor Correction and Fast Regulation

Babu, Jambulingam Jawahar; Thirumavalavan, Vinopraba

doi:10.1007/s40031-021-00674-7

Cited by 1 publication

(1 citation statement)

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“…However, in the application where the load is often changing rapidly, the circuit response speed is slow, and the interference will lead to the voltage fluctuation of the output DC bus, which will cause additional pressure on the devices in the system. This not only reduces the control performance of the system, but also does harm to the load [7,8]. In addition, the voltage power level transfer function of the AC-DC converter is the transfer function of non-minimum phase system, so it is necessary to suppress the negative regulation caused by unstable zero and shorten the regulation time of the system [9].…”

Section: Introductionmentioning

confidence: 99%

Research on Cascaded Single Phase PFC Based on Predictive PI Control

Shi

Qian

2022

WEVJ

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In order to improve the charging speed and reduce the occupied volume of an electric vehicle charger, a single-phase boost power factor corrector (PFC) system with cascade CHB (cascaded H-bridge) topology was adopted. Due to the periodic fluctuation of single-phase AC input, there is a large double power frequency ripple component in the output voltage of an AC-DC converter. When capacitor voltage is used as output for feedback control, the control system has the characteristics of a non-minimum phase system. In light of these factors that affect the dynamic stability of the system, a control method is proposed to improve the dynamic characteristics of the system without affecting its steady-state performance. The predictive PI control strategy was adopted to predict the error input signal of the lag process to attenuate the jitter in the control system and improve the dynamic performance and anti-interference of the system. Finally, the feasibility of the scheme was verified by experiments.

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Section: Introductionmentioning

confidence: 99%