Grid Connected PV System with hysteresis Current Controller based three phase inverter fed induction motor drive application



Power inverters are devices which can convert electrical energy of DC form into that of AC. Inverters can come in many different varieties, different parameters like price, power rating, efficiency and applications. The DC/AC power inverter is normally to take DC power supplied by a solar panel (or) battery, such as a sum volt battery, and transform it into a sum volt AC power source operating at 60 Hz, it has emulates the power available at an ordinary household electrical application. The tasks of Power inverters are used for day today life powering appliances in Domestic applications. When the inverter output is pure sinusoidal and its connected to the grid. But, to match the frequency, phase and amplitude of the grid and inverter output. Inverter output is depends upon the PWM (Pulse Width Modulation) signals to the gating of the inverter switches. The power generated by Renewable Energy Source (RES) should be fed to the distribution grid through an interfacing converter. This interfacing converter is controlled using a hysteresis current control which is simple in operation. Active power transfer from RES through a grid interfacing converter model is carried out. The converter is designed to drive a three-phase squirrel induction motor directly from photovoltaic (PV) energy source. The use of three-phase induction motor presents a better solution to the commercial DC motor water pumping system. A three phase Induction motor connected to Voltage Source Inverter (VSI), which in turn runs the centrifugal pump. The whole system is controlled using Matlab/Simulink environment.


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