Comparative Evaluation of Harmonic Injection Techniques for a Phase-Modular Three-Phase Six-Switch Buck-Boost Y-Inverter

Autor:	Grayson Zulauf, David Menzi, Saransh Chhawchharia, Hans-Peter Nee, Johann W. Kolar, Dominik Bortis
Rok vydání:	2022
Předmět:	Physics Three-phase Modulation Control theory Harmonic Buck–boost converter Inverter Topology (electrical circuits) Electrical and Electronic Engineering Pulse-width modulation Voltage
Zdroj:	IEEE Transactions on Power Electronics. 37:2519-2524
ISSN:	1941-0107 0885-8993
Popis:	Phase-modular buck-boost dc/ac inverters extend the voltage conversion range of conventional buck-type inverter topologies, and accordingly offer significant advantages for variable-speed motor drives powered from DC sources with wide-voltage-ranges like fuel cells or batteries. In this Letter, two new modulation schemes are applied to the Six-Switch Buck-Boost Y-Inverter (6YI) topology, with an analysis of the efficiency improvement for the proposed Third Harmonic Injection PWM (TPWM) and Discontinuous PWM (DPWM) schemes relative to conventional Sinusoidal Pulse Width Modulation (SPWM). TPWM substantially reduces conduction losses and DPWM extends this gain by eliminating high-frequency switching for 1/3 of the fundamental period. These gains are validated on a 1kW hardware demonstrator across a DC input voltage from 80V to 240V, with DPWM reducing total converter losses by 31% over SPWM for a peak efficiency at nominal load of 95.6% with a power density of 62.3W/in^3.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::31bc1a4dc1d6cce527785b8d9818f110 https://doi.org/10.1109/tpel.2021.3115903 Zobrazit plný text záznamu