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.

• This report represents the work of one or more WPI undergraduate students submitted to the faculty as evidence of completion of a degree requirement. WPI routinely publishes these reports on its website without editorial or peer review.

Creator

• Shaw, Jeremy S.
• Eggleston, Daniel P.
• Doucet, James Michael

Publisher

• Worcester Polytechnic Institute

Identifier

• E-project-042507-092653

Advisor

• Bitar, Stephen John

Year

• 2007

Sponsor

• NECAMSID

Date created

• 2007-04-25

Resource type

• Major Qualifying Project

Major

• Electrical & Computer Engineering

Rights statement

• In Copyright