International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 09 Issue: 05 | May 2022
p-ISSN: 2395-0072
www.irjet.net
SOLAR BASED WATER PUMP EMPLOYING Z-SOURCE INVERTER Udhaya Shankar C1, Bakthavachalam M2, Karthick Raja S3,Prabhu S4 1Associate
Professor, Department of Electrical and Electronics Engineering, Kumaraguru College of Technology [autonomous], Coimbatore, India
234Department
of Electrical and Electronics Engineering, Kumaraguru College of Technology [autonomous], Coimbatore, India
---------------------------------------------------------------------***--------------------------------------------------------------------Abstract - Now a day’s renewable energy sources are circuit is convert low voltage to high voltage. In this circuit, receiving great attention due to competitive prices in the we are using MOSFET for switching purpose. By giving market. It is due to technology advancement and frequency through MOSFET we energize the inductor for government support. Solar photovoltaic system is developed getting high voltage. When the MOSFET is ON and OFF for as a mature green technology with low maintenance particular time period, the inductor coil energizes and derequirement, less installation time and grid parity. Solar PV energize accordingly. By doing this method, we can get high supply system is classified in terms of its conversion stages. voltage. And also, Z source inverter is used to invert the DC The boost converter is the traditional converter used as an supply into AC supply by using the MOSFET. By switching ON intermediate power conversion circuit to obtain the the 6 MOSFET in time period we can get the AC supply where maximum solar generated power. in the inverter circuit 3 MOSFETs for switching the +ve A Z-source inverter (ZSI) replaces the VSI for variable supply and other 3 MOSFET are switching the –ve supply. speed drive system to overcome the aforementioned And MOSFET driver circuit is used to trigger the gate of the problems. The ZSI is considered as a single-stage buck-boost MOSFET. In this model, we are using Opto-coupler IC for the inverter. In the buck mode it operates like a traditional VSI, isolation of the high voltage DC and low voltage signal from with six active vectors and in boost mode it includes an extra the microcontroller. And MOSFET Driver IC is used to trigger switching state, defined as shoot-through state by using an the gate of the MOSFET by giving the +15V pulse. Then, impedance Z-network. The impedance network, boost DC Microcontroller PIC16F877A is used to generate the link voltage at the required level and considered as an frequency to boost the supply from the PV panel and also attractive solution for various applications. switching the MOSFET in the sequence by invert the DC This Project proposes a ZSI based single stage solar supply to AC supply. power conversion system for 3Phase AC drive coupled with water pumping load. 2. METHODOLOGY Key Words: MOSFET, PV PANEL, Z SOURCE INVERTER, MICROCONTROLLER, LEAD ACID BATTERY 1. INTRODUCTION The solar energy (renewable source of energy) converted into electrical energy through solar panels. It produces DC where it can be stored in a battery. This project employs z-source inverter to convert DC to AC to run the motor. Alternate current runs the electric pump which helps in decreasing the losses of the pump. This project aims to run the three-phase water pump using a z-source inverter. For this purpose, PV panel, Boost converter, z source inverter, Microcontroller are used in this proposed model. This project involves 5V and +15V DC supply. Then, stepdown transformer is used to get the 15V AC supply from 230V AC supply. And bridge rectifier is used to convert the AC supply to DC supply and capacitor is used for filtering the AC signals and 7667 and 6N135 regulator IC are used to regulate the DC supply. Thus, we can get +5V and +15V DC supply. This power supply is common for all the circuits. PV panel is used to get the DC supply form the sun light. This supply will be small and variable. To increase the power source, we made use of Boost converter, which means this
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3.DESCRIPTION OF THE COMPONENTS PV panel Lead acid battery Z source inverter Microcontroller MOSFET drive circuit Three phase induction motor
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