Carrier Based PWM Methods of Dual Cascaded Inverter for Solar Power Plant Solid State Transformer

Satiawan, I Nyoman Wahyu and Citarsa, Ida Bagus Fery and Suksmadana, I Made Budi and Ray, Pravat Kumar (2021) Carrier Based PWM Methods of Dual Cascaded Inverter for Solar Power Plant Solid State Transformer. In: International Conference on Smart-Green Technology in Electrical and Information Systems (ICSGTEIS), 28-30 October 2021, Sanur, Bali, Indonesia.

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Official URL: https://ieeexplore.ieee.org/document/9650353

Abstract

A new structure of solid state transformer (SST) for grid connected solar power plant is introduced in this paper. The SST utilizes dual cascaded multi-level inverter configuration. This paper investigates the performance of various PWM methods for the proposed SST. The dual cascaded inverter is controlled by using carrier based PWM methods, i.e Phase Shifted PWM, Level Shifted PWM and its variations. Simulation results show that the Overlapping Carrier (OC)-PWM method generates the highest fundamental component in the output. The Phase Disposition (DP)-PWM produces the best quality output voltage with the lowest value of THD (16,92%) among the PWM methods while the PS PWM method provides the worst THD (39,41%). However, after filtering, the PS-PWM method generates the most sinusoidal waveform that indicates by significant improvement in the value of THD (0.029%). The PS-PWM is able to remove the low order harmonics better and send them into the around 4 kHz and it side band which is twice of the applied switching frequency (2 kHz).

Item Type: Conference or Workshop Item (Paper)
Keywords (Kata Kunci): Grid connected solar power plant, Solid state transformer, Carrier based PWM, dual cascaded inverter, THD
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Fakultas Teknik
Depositing User: I Nyoman Wahyu Satiawan, S.T.M.Sc
Date Deposited: 19 May 2023 06:01
Last Modified: 19 May 2023 06:01
URI: http://eprints.unram.ac.id/id/eprint/38091

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