摘要
本设计充分利用Altera公司的CycloneⅡ系列FPGA的特性,构建了逆变电源的嵌入式控制系统。本设计在FPGA中实现数字化的PI和数字化的PWM控制。数字化控制实现了焊接过程信息实时采集处理,而且对输出电流有很好的控制。
This paper introduces the digital control system of arc welding inverter power supply which based on the high-performance CycloneⅡ series FPGA and the microcontroller, and then presents the phase-shifting PWM waveform generation method which can be inserted by dead-time is designed based on FPGA, gives the simulation waves of the design, and finally analyses the merit of the FPGA-based strategy and the results have proved the correctness of the analysis and design. The application of digital PID and the digital PWM method is the paper's emphases. The results have verified the practicality and validity of the design. This design is also suitable for the high-power switching power supply with high current and low voltage output.
出处
《电气技术》
2008年第8期16-21,共6页
Electrical Engineering
关键词
数字化
现场可编程门阵列逻辑器件
脉宽调制
逆交
digital control
field programmable gate array (FPGA)
pulse width modulator (PWM)
inverter
