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High Performance Modulation of High-Frequency AC Link Inverter

Kulkarni, Abhijit and John, Vinod (2015) High Performance Modulation of High-Frequency AC Link Inverter. In: ITEC-India 2015, 27-29 August, 2015, Chennai. (In Press)


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Official URL: https://eprints.iisc.ernet.in/secure/52828/1/itec0...


Inverters with high voltage conversion ratio are used in systems with sources such as batteries, photovoltaic (PV) modules or fuel cells. Transformers are often used in such inverters to provide the required voltage conversion ratio and isolation. In this paper, a compact high-frequency (HF) transformer interfaced AC link inverter with lossless snubber is discussed. A high performance synchronized modulation scheme is proposed for this inverter. This modulation addresses the issue of over-voltage spikes due to transformer leakage inductance and it is shown that the circuit can operate safely even when the turn-on delay, such as dead-time, is not used in the HF rectifier section. The problem of spurious turn-on in the HF inverter switches is also mitigated by the proposed modulation method. The circuit performance is validated experimentally with a $900W$ prototype inverter.

Item Type: Conference Paper
Additional Information: Copy right of this article belongs to the ITEC-India
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 10 Dec 2015 05:42
Last Modified: 11 Dec 2015 05:10
URI: http://eprints.iisc.ac.in/id/eprint/52828

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