Title

Variable Boundary Dual Mode Current Modulation Scheme For Three-Phase Micro-Inverter

Abstract

A traditional half-bridge three-phase inverter topology can achieve zero voltage switching by implementing BCM operation which requires no additional power devices or magnetic components. In this paper a variable boundary dualmode current modulation method that combines ZVS and ZCS is proposed in order to improve the efficiency of the BCM current controlled micro-inverter. Decreasing output current moves the ZVS/ZCS boundary toward the peak of the line half cycle which reduces the switching losses at light loads. Increasing output current will move this boundary toward the line zero crossing which reduces conduction losses at heavier loads. The experimental results show that using the proposed current modulation scheme peak efficiency of 98.7% for a 400W three-phase micro-inverter can be achieved with no additional cost. © 2014 IEEE.

Publication Date

1-1-2014

Publication Title

Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Number of Pages

650-654

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/APEC.2014.6803377

Socpus ID

84900410821 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84900410821

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