Kakar, Saifullah and Md. Ayob, Shahrin and Mohamad Nordin, Norjulia and Lee, Sze Sing and Arif, M. Saad (2021) Switched-capacitor-based modular t-type inverter with reduced switch count. In: 8th IEEE International Conference on Power and Energy, PECon 2020, 7 - 8 December 2020, Penang, Virtual.
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Official URL: http://dx.doi.org/10.1109/PECon48942.2020.9314519
Abstract
Switched-capacitor (SC) based inverter topologies are very attractive for renewable energy applications to step-up low dc voltage to higher ac voltage in single-stage without the need of front-end dc-dc converters, thus improving overall system efficiency, reliability and power density. This paper presents a new modular multilevel inverter based on switched-capacitor technique. Herein, series-parallel conversion technique is utilized to effectively self-balance the switched-capacitor voltages. Compared to other latest SC-based MLIs topology, the proposed structure features several advantages such as: low number of conducting semiconductor devices in load current paths and SC Charging paths. In addition, each capacitor is charged for at least half of the fundamental period that reduces voltage ripple and improves the inverter efficiency. Consequently, the presented inverter is suitable for high levels generation to achieve the rated ac voltage directly from a low voltage dc source. The merits and feasibility of the proposed inverter are verified through simulation for seven levels with sinusoidal PWM at different modulation indices and load conditions.
Item Type: | Conference or Workshop Item (Paper) |
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Uncontrolled Keywords: | Neutral point clamped, Self-balancing |
Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
Divisions: | Electrical Engineering |
ID Code: | 94175 |
Deposited By: | Widya Wahid |
Deposited On: | 28 Feb 2022 13:25 |
Last Modified: | 28 Feb 2022 13:25 |
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