Power Generation of Pure Sine Wave in Batteryless Solar System using Advanced Control

• Main Authors: Muhammad Siddique, Muhammad Usman, Malik Yasir Iqbal, Safdar Raza, Muhammad Waleed, Laaj Batool
• Format: Article
• Language: English
• Published: The University of Lahore 2021-01-01
• Series: Pakistan Journal of Engineering & Technology
• Subjects: Zeta converter; BLDC motor; Solar powered sine wave generation (SPSWG); Voltage source inverter (VSI); Lyapunov Function; Sliding mode control (SMC)
• Online Access: https://www.hpej.net/journals/pakjet/article/view/668

A novel technique for conversion of DC power to AC power is introduced using solar powered sine wave generation system is presented. DC power extracted from solar system is made utilitarian for driving the BLDC (brushless DC) motor with constant speed constraints. The back EMF signals of each phase of the BLDC motor facilitated the development of technique for the sine wave generation from solar system without battery backup. This motor is coupled with AC generator, which yields the AC power on demand. The constant speed constraint indispensable for fixed electrical frequency at the output of generator. A new control technique is rendered for reference tracking speed control of BLDC motor using Lyapunov theory by changing switching frequency, and also maintaining the voltage level at the output of converter driving BLDC by regulating the switching frequency of the zeta converter. The proposed methodology for generation of AC power from solar power system is also tested on prototype. The comparison of conventional technique for generation of sine wave power and proposed scheme is mentioned at later section of this paper for describing the efficacy of newly presented scheme.