摘要
针对传统的调功方法产生大量谐波分量,对电网造成的不利影响。在研究了功率因数校正(PFC)的基础上,将其运用到高效调功方法中,通过PFC部分消除谐波分量,提高了功率因数;并通过PWM波形驱动IGBT导通,改变输出电压的有效值。本设计以美国德州仪器公司(TI)的定点DSP芯片TMS320F2812为控制单元,利用其高运算能力进行控制算法的实现,并通过其丰富的外设接口实现AD采样和所调控的PWM波形输出。经验证该调功方法能准确并快速地控制输出功率,并按照用户的要求进行稳定地调节。
The traditional methods of power regulation cause adverse effects on the grid because of producing harmonic component. On the base of deeply understanding about power factor correction（PFC）, it is used in the scheme of power regulation. This system reduces the harmonic component and improves the power factor with PFC part, and changes the RMS voltage output by driving the IGBT to conduct with PWM waveform. The design makes use of TI＇s fixed point DSP TMS320F2812, using its character of high-speed computing to achieve the control algorithm, and achieving AD sampling and the controlled PWM waveform output though its rich peripheral interfaces. This method is verified to work accurately and to respond rapidly, and can control the load power output steady in accordance with users command.
出处
《电子测量技术》
2010年第9期1-3,7,共4页
Electronic Measurement Technology
关键词
功率因数校正
功率调节
数字信号处理
脉冲宽度调制
power regulation
power factor correction
digital signal processor（DSP）
PWM waveform control
