Faculty Advisor

Bitar, Stephen John

Abstract

An improved pure sinewave DC/AC inverter design is presented, utilizing a unique three-level PWM switching scheme. Existing sinewave inverters typically use two-level PWM that results in larger switching voltage transitions, leading to power inefficiencies. This project incorporates a fully analog control circuit comprised of a high frequency triangle-wave generator, 60Hz sinewave oscillator, high speed comparators and a MOSFET H-Bridge, to successfully implement the desired three-level output. A passive low-pass filter is then used to filter out harmonics in the signal.

Publisher

Worcester Polytechnic Institute

Date Accepted

April 2007

Major

Electrical and Computer Engineering

Project Type

Major Qualifying Project

Accessibility

Unrestricted

Advisor Department

Electrical and Computer Engineering

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