A digitally controlled amplifier with ripple cancellation

Author

Jackson, Deron K. ; Leeb, Steven B.

Author_Institution

Adept Technol., San Jose, CA, USA

Volume

18

Issue

1

fYear

2003

fDate

1/1/2003 12:00:00 AM

Firstpage

486

Lastpage

494

Abstract

This paper describes a large-signal linear, multirate digital controller for, among other possible servomechanical applications, charging electric vehicle batteries. This controller permits the power amplifier to track and deliver a desired current trajectory for a wide range of loads while providing a unity-power-factor interface to the electric utility. A computationally inexpensive technique for implementing output ripple cancellation is also described and demonstrated on a prototype converter.

Keywords

battery chargers; digital control; electric current control; electric vehicles; feedforward; power amplifiers; power factor; servomechanisms; voltage control; charging current control; current trajectory; digitally controlled amplifier; electric vehicle batteries charging; feedforward ripple cancellation; large-signal linear multirate digital controller; ripple cancellation; servomechanical applications; unity-power-factor interface; voltage control; Batteries; Control systems; Costs; Digital control; Frequency; Inverters; Power amplifiers; Rectifiers; Servomechanisms; Voltage;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2002.807138

Filename

1187468