2021
DOI: 10.1002/cta.3088
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An active parallel power decoupling circuit with a dual loop control scheme for micro‐inverters

Abstract: An important challenge in single‐stage single‐phase micro‐inverters is reducing required capacitance by various active power decoupling (APD) techniques in order to use film capacitors with a longer lifetime instead of electrolytic capacitors. In this paper, a photovoltaic (PV)‐side parallel APD circuit based on a bidirectional flyback converter is proposed. This topology is able to increase the average and ripple voltages for the capacitor due to having a transformer and thus can reduce the required capacitan… Show more

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Cited by 5 publications
(2 citation statements)
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“…Grid-supporting inverters supply reactive power and varying active power at predefined droop setting [2]. Grid-feeding inverters maintain a constant current output and provide active power in phase with the grid because they focus on MPPT and zero reactive power [3,4]. Therefore, integrating PV, inverter and energy storage as an AC-PV module might help solve this energy problem.…”
Section: Introductionmentioning
confidence: 99%
“…Grid-supporting inverters supply reactive power and varying active power at predefined droop setting [2]. Grid-feeding inverters maintain a constant current output and provide active power in phase with the grid because they focus on MPPT and zero reactive power [3,4]. Therefore, integrating PV, inverter and energy storage as an AC-PV module might help solve this energy problem.…”
Section: Introductionmentioning
confidence: 99%
“…However, PI controllers suffer from relatively low loop gains at the fundamental frequency and the corresponding harmonics. In previous research, [24][25][26] the proportional resonant (PR) control is proposed. It provides infinite gain at the resonant frequency and can track the sinusoidal signal without static error, but the PR controller is hard to realize, and the control gain is limited when the bus voltage frequency fluctuates.…”
mentioning
confidence: 99%