Renewable Energy Systems

9	Voltage Lift Converters

Ordinary DC/DC converter has limited voltage transfer gain. Considering the component parasitic elements’ effects, the conduction duty cycle k only can be 0.1 < k < 0.9. This restriction blocks ordinary DC/DC converter voltage transfer gain increase. Voltage-lift (VL) technique is a general method used in electronics circuitry design to amplify the output voltage. Using this technique in DC/DC conversion technology, we can design VL power converters with high-voltage transfer gains in arithmetic progression stage by stage. It opens the way to largely increase the voltage transfer gain of DC/DC converters. Using this technique the following series VL converters are designed [1,2]:

•  Positive-output (P/O) Luo converters ...