ZVS Asymmetrical PWM Full-bridge High Voltage Gain DC-DC Converter Controlled by ANFIS for Energy Harvesting Applications

Abstract

Adaptive neuro-fuzzy inference system (ANFIS) controller for zero voltage switching (ZVS) asymmetrical pulse width modulated (APWM) full-bridge DC-DC converter with high voltage gain is proposed for energy harvesting applications. Converter has given continuous input current, low switching losses, higher efficiency and higher power density as a result of zero voltage switching. ANFIS controller has provided superior control to maintain constant converter output voltage for any one of energy harvesting applications. ANFIS controller performance has been compared with proportional integral (PI), fuzzy logic (FLC) and fuzzy proportional, integral and derivative (Fuzzy PID) controllers. Proposed system has been simulated using PSIM and MATLAB/Simulink tools boxes and results presented.  Also, hardware prototype of proposed system with 1.6KW rating has been fabricated and tested.