Robust digital control of a broadband PWM power amplifier

Author

Suzuki, Nobutaka ; Higuchi, Kohji ; Kajikawa, Tatsuyoshi

Author_Institution

Univ. of Electro-Commun., Chofu, Japan

fYear

2012

fDate

17-21 Oct. 2012

Firstpage

1518

Lastpage

1521

Abstract

Lately, it is required that a PWM power amplifier has a wide bandwidth and good robustness. For example, it is in application of a testing power supply of a low frequency immunity examination, or a class-D amplifier. In this paper, we show that the bandwidth of PWM power amplifier can be extended and the good robustnes can be attained by using an approximate 2-degree-of-freedom (2DOF) digital controller. This controller is implemented on a DSP. It is demonstrated from experiments that the broadband and robust PWM power amplifier can be realized with this controller.

Keywords

PWM power convertors; digital control; digital signal processing chips; power amplifiers; robust control; wideband amplifiers; 2-degree-of-freedom digital controller; 2DOF digital controller; DSP; broadband PWM power amplifier; class-D ampllifier; low feequency immunity examination; power supply testing; robust PWM power amplifier; robust digital control; Bandwidth; Control systems; Digital signal processing; Power amplifiers; Power supplies; Pulse width modulation; Robustness; DSP; approximate 2DOF system; broad band PWM amplifier; robust digital control;

fLanguage

English

Publisher

ieee

Conference_Titel

Control, Automation and Systems (ICCAS), 2012 12th International Conference on

Conference_Location

JeJu Island

Print_ISBN

978-1-4673-2247-8

Type

conf

Filename

6393078