Dynamic overmodulation characteristics of triangle intersection PWM methods

Author

Hava, Ahmet M. ; Sul, Seung-Ki ; Kerkman, Russel J. ; Lipo, Thomas A.

Author_Institution

Wisconsin Univ., Madison, WI, USA

Volume

2

fYear

1997

fDate

5-9 Oct 1997

Firstpage

1520

Abstract

In this paper, the dynamic overmodulation characteristics of current regulated carrier-based high-performance PWM-VSI drives are investigated. Dynamic and steady state overmodulation operating modes are clearly distinguished, and the requirements for obtaining high performance in each mode are shown to be significantly different. Dynamic overmodulation characteristics of the popular triangle intersection PWM methods are modeled and shown to be unique for each method. The study reveals that space vector PWM (SVPWM) exhibits a minimum voltage magnitude error characteristic. It also indicates all the advanced triangle intersection PWM methods including SVPWM have limited dynamic overmodulation performance. To enhance the performance, an algorithm with superior performance is adapted from the direct digital PWM approach. Detailed induction motor drive simulations illustrate the deficiency of popular triangle intersection PWM methods and the performance gained with the new dynamic overmodulation algorithm

Keywords

DC-AC power convertors; PWM invertors; electric machine analysis computing; induction motor drives; power supplies to apparatus; PWM VSI; algorithm; dynamic overmodulation characteristics; induction motor drive simulations; power supplies; space vector PWM; triangle intersection PWM methods; voltage magnitude error characteristic; AC motors; Digital modulation; Frequency; Linearity; Pulse width modulation; Pulse width modulation inverters; Pulsed power supplies; Space vector pulse width modulation; Steady-state; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE

Conference_Location

New Orleans, LA

ISSN

0197-2618

Print_ISBN

0-7803-4067-1

Type

conf

DOI

10.1109/IAS.1997.629054

Filename

629054