Design and Analysis of Quadratic Boost Converter with Inductor-Capacitor-Diode Voltage Multiplier Circuit

Abstract

In the current study, design and analysis of quadratic boost dc-dc converter with a voltage multiplier are presented. An additional inductor-capacitor-diode circuit is implemented as a voltage multiplier in the designed converter. In comparison with conventional boost converter, the designed quadratic boost converter based on additional multiplier circuit provides high gain voltage conversion with high efficiency. These properties make the designed converter practicable for sustainable energy implementations. The proposed converter is used to obtain higher output voltages employing equal input voltages in comparison with traditional boost converter, two-level cascade boost converter and traditional quadratic boost dc-dc converter. In the current study, operational principles of quadratic boost dc-dc converter with voltage multiplier circuit are clarified in detail. The relationship between input voltage and output voltage is formulized analytically and mathematical analysis of quadratic boost converter with voltage multiplier circuit is comprehensively given for smooth dc-dc converter operation. Subsequently, a controller scheme based on proportional-integral (PI) is presented for quadratic boost converter integrated with multiplier circuit. In the performance results, the operational waveforms of the designed converter are performed by using Simulink simulation program. Voltage gain analysis of designed converter versus conventional boost converters is compared to show the voltage conversion rates for different duty cycle values. In the designed converter, the input voltage is selected as a 24 V dc voltage source. At load side, the resistive load in the rating of 80 Ω consumes 720 W active power. In addition, input/output voltages, power waveforms and current waveforms are introduced.