| With the development of power electronics, power electronic equipment used in a variety of network, brought to power harmonic problems, all kinds of harmonic filters have emerged, but this is only a passive treatment after pollution measures, APFC is a proactive approach, before the class is used to switch power rectifier, input current is sine wave, and do not pollute the power grid. From the power factor of the definition, describes single-phase power factor correction in the main method. Full Text based around a new Isolated Cuk converter active power factor correction circuit design, the main completed the following work: papers in the analysis of active power factor correction based on the basic working principle, defined to be the object of study A - Average current-mode controlled Cuk converter based on isolated APFC circuit, the basic unit from the Cuk converter analyzes the working principle of Cuk converter, on this basis, determine the Isolated Cuk converter based APFC circuit basic topology, and then the main components of the circuit's voltage and current waveforms are analyzed on this basis, the main components of the circuit parameters used were designed to determine the parameters of the auxiliary circuit elements. Continuous inductor current when using the average method, derived Cuk converter input current and output voltage controlled by the duty cycle of the small signal model, and then conducted a control circuit part of the current regulator and voltage regulator design, in the end Matlab environment, isolated Cuk converter based on the APFC circuit simulation, simulation results are satisfactory.
|
PDF Full Text Request