1、电力电子课程设计 1 电力电子技术电力电子技术课程课程设计说明书设计说明书 单相全波晶闸管整流电路设计 电力电子课程设计 2 摘摘 要要 为培养运用基本知识进行简单电路设计的能力,扎实基础理论,我们现在初 次进行电力电子课程设计。 随着科学技术的日益发展,人们对电路的要求也越来越高,由于在生产实际 中需要大小可调的直流电源,而相控整流电路结构简单、控制方便、性能稳定, 利用它可以方便地得到大中、小各种容量的直流电能,是目前获得直流电能的主 要方法,得到了广泛应用。但是晶杂管相控整流电路中随着触发角 的增大,电 流中谐波分量相应增大,因此功率因素很低。把逆变电路中的 SPWM 控制技术用 于整流
2、电路,就构成了 PWM 整流电路。通过对 PWM 整流电路的适当控制,可以使 其输入电流非常接近正弦波,且和输入电压同相位,功率因素近似为 1。这种整 流电路称为高功率因素整流器,它具有广泛的应用前景。 电力电子器件是电力电子技术发展的基础。正是大功率晶闸管的发明,使得 半导体变流技术从电子学中分离出来,发展成为电力电子技术这一专门的学科。 而二十世纪九十年代各种全控型大功率半导体器件的发明, 进一步拓展了电力电 子技术应用和覆盖的领域和范围。 电力电子技术的应用领域已经深入到国民经济 的各个部门,包括钢铁、冶金、化工、电力、石油、汽车、运输以及人们的日常 生活。功率范围大到几千兆瓦的高压直流
3、输电,小到一瓦的手机充电器,电力电 子技术随处可见。 关键词:半导体、电力变换、整流电路 电力电子课程设计 3 ABSTRACTABSTRACT To cultivate the use of basic knowledge of the ability of a simple circuit design, solid basic theory, we are now the first time the power electronics curriculum design. With the increasing development of science and technology
4、, the circuit is also getting higher and higher, due to the need to size adjustable DC power supply in the actual production, and phase-controlled rectifier circuit structure is simple, easy to control, stable performance, easy to use it to get large and medium-sized, small-capacity DC, is currently
5、 the DC method has been widely applied. However, the grain hybrid tube of increases with the firing angle of the phase-controlled rectifier circuits, harmonic component corresponding increase in the current, power factor is very low. SPWM control inverter circuit for the rectifier circuit, constitut
6、es a PWM rectifier. Proper control of the PWM rectifier, so that the input current is very close to sine wave, and phase with the input voltage, power factor is approximately 1. This rectifier circuit is called a high power factor rectifier, which has broad application prospects. Power electronic devices is the basis for the development of power electronics technology. It is the invention of the power thyristor, semiconductor converter separated from the electronics, the development of