Design of Switching Power Amplifier in Magnetic Suspension System
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 (NIPCI6221). The output horsepower was changed by regulating the duty ratio of the pulse. Finally, the intention of adjusting current was obtained.
switching power amplifier LabVIEW Simulink pwm
Li Xiao li Cui Tian shi
Engineering College Northeast Agriculture University Harbin, China
国际会议
长春
英文
244-247
2010-08-24（万方平台首次上网日期，不代表论文的发表时间）