Economical High Frequency Voltage Source Inverter System.

Document Type : Research Studies

Author

Faculty of Engineering and Technology., Helwan University., Cairo., Egypt.

Abstract

High-performance high-frequency inverter systems for voltage source applications  such as UPS represent a demanding application that cannot be easily realized using  conventional PWM inverter modes. New controller structures are necessary to cope with  stringent voltage regulation and distortion constraints in the presence of nonlinear loads. This  paper presents a simple but intelligent hysteresis controller. It utilizes all possible inverter  topologies in addition to feed-forward strategy to achieve low output ripple, minimum  switching frequency and excellent transient performance. These features were not available  until now. The result verifying the concept, using pspice program for practical electronic  control circuit and power devices, are presented Although this paper explains the  implementation of the 3-phase control and power circuits that can adapt itself in case of  nonlinear and unbalanced loads.  

Main Subjects