A self-balancing space vector switching modulator for three-level motor drives

Author

Zhou, Dongsheng

Author_Institution

Rockwell Autom., Mequon, WI, USA

Volume

3

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

1369

Abstract

This paper describes on how to formulate a self-balancing space vector modulator for the three-level neutral point clamp topology typically used for high power induction motor drives. Besides the space vector modulation principle being used to calculate pattern times within one control update cycle, several other techniques are proposed in order to obtain a production quality modulator. These include a pivot point concept to be used for pattern selections in order to achieve minimum switching losses, techniques for neutral point voltage balancing, power device minimum on/off time guarantee, adjacent state switching, and sine triangular equivalent etc. The derived modulator was successfully implemented with a 3500 hp motor drive. Lab test results show the effectiveness of the modulator

Keywords

DC-AC power convertors; PWM invertors; induction motor drives; modulators; power supplies to apparatus; switching circuits; 3500 hp; neutral point voltage balancing; pattern selections; pattern times; pivot point concept; production quality modulator; self-balancing space vector switching modulator; switching losses minimisation; three-level induction motor drives; three-level neutral point clamp topology; Automation; Belts; Clamps; Motor drives; Pulse width modulation inverters; Region 1; Switches; Switching loss; Topology; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual

Conference_Location

Vancouver, BC

ISSN

0275-9306

Print_ISBN

0-7803-7067-8

Type

conf

DOI

10.1109/PESC.2001.954311

Filename

954311