Dsp-Based Scalar Control of a Three-Phase Induction Motor Powered by Solar Photovoltaic Panels

Abstract

In this research, the control of the three-phase asynchronous motor fed by an inverter with three-phase voltage has been carried out with a fixed V / f control algorithm. A DC-DC boost converter is used to increase the PV panel output voltage and bring the input voltage of the inverter to the appropriate level. The boosted voltage is fed to the full bridge inverter. The control in output characteristics of DCAC conversion is key to control the speed of the asynchronous motor. The photovoltaic (PV) system provided with the Digital Signal Processor (DSP) control is designed and practical implementations aimed to enhance the PV efficiency. Considering that the power and the power required by the loads vary in proportion to the speed, the power required by the motor to change the speed has been controlled and harmonized between the PV source and the load. The practical implemented system basically consists of PV panels, power module and MSK28335 motor control software development board. The ACPM750 power module has a power of 750W and is designed for driving 3-phase AC induction motors. The rated values of the 3-phase IGBT inverter included are 400VDC, 4 ARMS and the switching frequency is 24 kHz. The experimental results of the proposed system ensure the effectiveness and compatibility.