A. Praneeth, N. A. Azeez, Lalit Patnaik, S. Williamson
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Proportional resonant controllers in on-board battery chargers for electric transportation
A Power Factor Correction (PFC) converter comprises the initial stage of a grid connected on-board battery charger for electric vehicles. Generally, the control scheme for the nested PFC converter consists of two Proportional Integral (PI) controllers for maintaining the input current and the intermediate DC voltage respectively. The problem with the PI current controller is its inability to track the reference sine wave signal when there is a sudden change in load, which introduces the harmonic distortions at the input current. To overcome these issues, this paper proposes the design of a Proportional Resonant (PR) current controller for the front-end rectifier in a universal battery charger. A 1 kW PFC converter with PR controller under different load conditions is simulated and presented in this paper.
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