Highly efficient two inductor boost converter for solar power application

The use of a three phase induction motor presents a better solution to the commercial dc motor water pumping system. A three-phase induction motor is driven by the two inductor boost converter which is directly fed from the PV energy. To achieve a reliable, more efficient, maintenance-free, and cheaper solution than the standard ones that uses dc motors or low-voltage synchronous motors, this development is introduced. The developed system is based on a current-fed multi resonant converter known as resonant two-inductor boost converter (TIBC) and a full-bridge three-phase voltage source inverter (VSI). The features like high voltage gain and low input current ripple is further improved with the use of a non isolated recovery snubber along with a hysteresis controller and the use of a constant duty cycle control to improve the efficiency of the system. Due to the existence of electrolytic capacitors, the system is expected to have a high lifetime and the total cost of the converter reduces. Thus, the system is a promising solution to be used in isolated locations and to deliver water to poor communities.