功率整流器的功率因数控制

Power factor control of power electronic converter

对于交—直—交变频调速系统，在满足用电设备在动态过程中的电气要求的前提下，如何保证电源质量，并使线路的能量损耗最小，功率因数达到最高，是目前大中功率电气控制系统中必须解决的问题.本文从系统的设计和电气传输理论详细分析了能量最优的控制方法和实现技术，并给出了实时仿真结果.

In AC-DC-AC speed control system of AC-motor by varying frequency,how to guarantee the power quality, how to decrease energy loss to a minimum, and how to increase power factor to a maximum are mainly concerted problem that must be solved in middle and high electrical drives. Of course, in order to guarantee the quality of system source, necessary measures must be took in count by varying main circuit structure to minimize the harmonics. ln this paper, the control method and realizing technology have been analyzed in detail by the use of the design and the electrical power transmitting theory, there are also simulation results.