Design of switching power amplifier in magnetic suspension system

Author

Li, Li Xiao ; Shi, Cui Tian

Author_Institution

Eng. Coll., Northeast Agric. Univ., Harbin, China

Volume

3

fYear

2010

fDate

24-26 Aug. 2010

Firstpage

244

Lastpage

247

Abstract

The switching power amplifier which is the plant of magnetic suspension control system is decisive of the stability of magnetic suspension control system, so the switching power amplifier was designed for magnetic suspension. At first, the simulation model of the switching power amplifier was proposed based on MATLAB/Simulink using power system block (PSB). The validity of the modeling method was verified by the consistency of the final simulation results with the experimental results. The half bridge structure was used in the main circuit. The PWM pulse that has a changeable duty and fixed frequency was generated by the internal counter of data acquisition card (NI-PCI6221). The output horsepower was changed by regulating the duty ratio of the pulse. Finally, the intention of adjusting current was obtained.

Keywords

network synthesis; power amplifiers; pulse width modulation; switching circuits; MATLAB/Simulink; PWM pulse; data acquisition card; magnetic suspension system; power system block; pulse duty ratio; simulation model; switching power amplifier design; Hardware; MATLAB; MOSFET circuits; Maximum likelihood detection; Nonlinear filters; Pulse width modulation; Switches; LabVIEW; Simulink; pwm; switching power amplifier;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer, Mechatronics, Control and Electronic Engineering (CMCE), 2010 International Conference on

Conference_Location

Changchun

Print_ISBN

978-1-4244-7957-3

Type

conf

DOI

10.1109/CMCE.2010.5610347

Filename

5610347