A High Gain DC-DC Converter with Soft Switching for Inverter with Grid

A DC–DC converter with a high step-up voltage gain is used for many applications such as high-intensity discharge lamp ballasts for automobile head lamps fuel cell energy conversion systems solar-cell energy conversion systems and battery backup systems for uninterruptible power supplies. Theoretically a dc–dc boost converter can achieve a high step-up voltage gain with an extremely high duty ratio. However in practice the step-up voltage gain is limited due to the effect of power switches rectifier diodes and the equivalent series resistance (ESR) of inductors and capacitors.