An Efficient Three-Phase Zero-Voltage Switching Passive Resonant Pole Inverter

Wang, Qiang; Wang, Xinmiao; Wang, Youzheng

doi:10.1109/tcsii.2023.3278331

IEEE Trans. Circuits Syst. II

2023

DOI: 10.1109/tcsii.2023.3278331

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An Efficient Three-Phase Zero-Voltage Switching Passive Resonant Pole Inverter

Qiang Wang

Xinmiao Wang

Youzheng Wang

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2024

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Cited by 2 publications

References 14 publications

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Analysis and design of an efficient three‐phase voltage source inverter with performance optimization

Wang,

He,

Wang

2024

Circuit Theory & Apps

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SummaryThe paper designs a novel efficient three‐phase voltage source inverter with performance optimization. When auxiliary circuits connected in parallel with every bridge arm are involved in working process of the designed inverter, main switches will realize zero‐voltage switching in the wide load range, which is beneficial for further decline of the loss of main switches. Furthermore, the optimized duty cycle of the gate drive signal of auxiliary switches is used to restrict circuiting current loss. Besides, when the designed inverter works in a dead zone, the resonance will occur in the auxiliary circuits to cause the output phase voltage to vary from zero or the DC supply voltage to the DC supply voltage or zero as soon as possible, which is beneficial for further decline of the output phase voltage error and the suppression of dead effect. The paper provides relevant analysis on each working status within a switching period along with design requirements. By analyzing test waveforms, it affirms that main switches realize zero‐voltage switching. The efficiency of the designed inverter reaches 98.8% at rating condition. The experiment affirms that the designed inverter has an edge over another two inverters for comparison in performance optimization.

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Analysis and design of an efficient three‐phase voltage source inverter with performance optimization

Wang,

He,

Wang

2024

Circuit Theory & Apps

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Design of a new modular‐isolated‐forward‐based active snubber cell for power switches

Bodur,

Gundogan,

Bakan

2024

Circuit Theory & Apps

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In this paper, a new modular‐isolated‐forward‐based active snubber cell (SC) for power switches is designed. In the proposed new SC, the zero voltage transition (ZVT) technique is implemented with a forward converter although the current counterparts generally use a flyback converter. In the converter with the new SC, the main switch is turned on with ZVT (full zero voltage switching [ZVS]) and turned off with ZVS, the main diode is turned off with zero current switching (ZCS), the auxiliary switch is turned on with ZCS and turned off with ZVS, and the parasitic capacitor energies are recovered. In addition, thanks to the forward converter, it has been possible to minimize the transformer leakage inductance and greatly reduce the current values of devices in the new SC. The new cell is applied to a single‐phase, grid‐connected, T‐type three‐level inverter (T2‐3LI) as an example. A detailed steady‐state analysis of this inverter was made, and the theoretical analysis was confirmed with measurement results taken from a prototype with 100 kHz and 3.3 kW values. Compared to its hard switching (HS) equivalent, in the converter with soft switching (SS) cell, the total circuit loss was reduced from about 248 W to 86 W, thus achieving an increase in the total efficiency from 92.5% to 97.4%.

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An Efficient Three-Phase Zero-Voltage Switching Passive Resonant Pole Inverter

Cited by 2 publications

References 14 publications

Analysis and design of an efficient three‐phase voltage source inverter with performance optimization

Analysis and design of an efficient three‐phase voltage source inverter with performance optimization

Design of a new modular‐isolated‐forward‐based active snubber cell for power switches

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