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2022 | OriginalPaper | Buchkapitel

Single Phase Five Level Step-Up Switched Capacitor Based Grid Connected Inverter with LCL Filter

verfasst von : Aratipamula Bhanuchandar, Bhagwan K. Murthy

Erschienen in: Recent Advances in Power Electronics and Drives

Verlag: Springer Nature Singapore

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Abstract

In this paper, single phase five level step-up switched capacitor based grid connected inverter with LCL filter has been presented and it comprises six unidirectional switches, eight diodes, two switched capacitors (SCs), and one dc source. Here, LCL filter has been integrated with grid and it provides higher ripple attenuation capability. The cascade connection of two SC units with 1:5 source configuration has the capability to generate 25 level output with RL load has been elucidated with Unified Rounding Control Scheme (URCS). Both in grid connected and RL load cases, the SCs are self-balanced without need of auxiliary circuits and separate complex control schemes. The five level inverter topology provides less per unit Total Standing Voltage (TSV) and boosting ability with single dc source. For grid connected case, a dq frame current control strategy has been applied to achieve Unity Power Factor (UPF) operation with respect to grid voltage and grid current. Finally, to verify the feasibility of proposed topology with RL load and grid connected cases have been validated through MATLAB/Simulink platform.

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Titel: Single Phase Five Level Step-Up Switched Capacitor Based Grid Connected Inverter with LCL Filter
verfasst von: Aratipamula Bhanuchandar
Bhagwan K. Murthy
Verlag: Springer Nature Singapore
Buch: Recent Advances in Power Electronics and Drives
Print ISBN: 978-981-16-9238-3

Electronic ISBN: 978-981-16-9239-0

Copyright-Jahr: 2022
DOI: https://doi.org/10.1007/978-981-16-9239-0_42