Improvement Of High Response And Variable Speed Operated With PV Based Voltage Converter And Hybrid Fuzzy Logic Controller Fed BLDC Drive

Abstract

This paper introduces a new converter called solar reconfigurable converter (SRC) for PMBLDC drive with photovoltaic (PV)-battery application. The basic concept of the SRC is to use a single power conversion system to perform different operation modes such as PV to BLDC drive (dc to ac), PV to battery (dc to dc), battery to BLDC drive (dc to ac), and battery/PV to BLDC drive (dc to ac) for solar PV systems with energy storage. For BLDC drive FUZZY LOGIC controller is used to control the motor drive in closed loop. This paper proposes an artificial-intelligence-based solution to interface and deliver maximum power from a photovoltaic (PV) power generating system in standalone operation. BLDC motor is connected at the output side which acts as a load and efficiently utilizes the power obtained from solar using controllers like PI and Fuzzy. An electronically commutated Brushless DC drives are enormously used in many applications. A drive system consists of power circuit with converter and inverter and the control unit. Due to the switching operation of the power circuit, the shape of the current drawn from the source is distorted. This increases the apparent power than the real power of the circuit. Electrical utilities will charge a higher cost to commercial customers where there is a low power factor. There is a need for power factor improvement and reduction of source current harmonics at ac mains. This can be achieved by proper switching operation of the converter. Fuzzy logic controller helps to control the switching pulses to the switch by voltage follower approach. Compared to PI and fuzzy controller, hybrid fuzzy controllers provide better speed response but conventional controllers offer better response with changing load at the cost of long settling time. Matlab/Simulink environment is used to carry out the above investigation.