摘要
介绍了基于DSP数字余弦移相单元的同步发电机可控硅微机励磁调节器的设计原理和实现过程。利用DSP芯片可快速执行傅氏算法的优点,应用DSP芯片、单相整流电路、测频电路和脉冲输出电路组成了DSP数字余弦移相单元,并提出硬件、软件设计方案和触发角的反余弦拟合算法,从而快速、精确地拟合、确定可控硅的移相触发角,进而有效控制发电机励磁直流电压,实现发电机端电压输出的稳定。现场试验表明,调节器输出脉冲一致性好、快速平稳、扰动小,该装置对励磁系统控制性能有显著提高。
The microcomputer excitation regulation device based on DSP cosine phase-shift is introduced. The digital cosine phase-shifted unit is buildup based on DSP chip by using sizzle-phase rectifying circuit, frequency measurement circuit and impulse output circuit. The advantage of fast Fourier transform algorithm in DSP is used to ascertain trigger angle quickly and influence excitation DC voltage directly, then control the output voltage of generators. Experiment results show that the output impulse is good and excitation system has good control performance.
出处
《控制工程》
CSCD
2007年第3期325-327,339,共4页
Control Engineering of China
关键词
励磁调节器
DSP
数字触发
控制角
excitation adjuster
DSP
digital trigger
control angle
