Grainger CEME Seminars

Back to Listing

Generator Back-Electromotive-Force Shaping for DC Output with Low Ripple Voltage

Event Type
Seminar/Symposium
Sponsor
Grainger CEME
Location
4070 ECEB
Date
Dec 2, 2019   3:00 - 4:00 pm  
Speaker
Qichen Jin
Views
28

Slides

Video

 

Abstract

There are two major approaches to convert three-phase AC to DC: a passive approach that uses rectifier diodes and capacitors and an active approach that deploys MOSFET/IGBT. Both approaches have associated drawbacks. The extensive use of active switching devices and capacitors impairs the overall reliability of the converter system. For an integrated three-phase generator rectifier system, such as in offshore wind farms or electrical ships, trade-offs can be made between generators and rectifiers in such a way as to make feasible the simplest rectifier bridge implementation. The goal is to find the optimal trapezoida-shaped back-emf such that the output DC ripple loss is minimized while a near-unity power factor of the generator is maintained.

link for robots only