6ES7 232-0HB22-0xA8 在研究一个实际的整流电路时,常常将系统中某些次要的因素忽略(或暂时忽略),即所谓在理想条件下来研究它,以便获得主要的结论,然后再将暂时被忽略的因素考虑进去,加以完善,使结论更加接近一个实际的系统。尽管这样,得到的结论仍然是真实情况的近似。但随着研究的深入,这种近似与工程实际的误差必然越来越小。
整流电路的这些理想条件是:
(1)理想器件:晶闸管具有理想特性,即正向阻抗为零,反向阻抗为无穷大;整流变压器绕组无漏感,无内阻,无铁耗,铁心的导磁系数为无穷大;
(2)理想电源:交流电网有无限大的容量,电源为恒频恒压和对称的三相电源,因而整流电路接入点的网压为无畸变正弦波。
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