Quantum PWM design and implmentation for DC motor Drive

Abstract

Recently, quantum computing has emerged as a promising paradigm that offers unprece- dented computational power for solving complex problems. This study delves into the domain of quantum computing and investigates its potential for generating Pulse Width Modulation (PWM) signals, a crucial technique widely used in various applications such as power electronics and communication systems. The objective of this end-of-studies project is to explore quantum algorithms and their suitability for Pulse Width Modulation signal generation. Through an enough analysis of existing quantum computing frameworks, including qubit manipulation and quantum gate operations, we aim to develop a novel approach for generating PWM signals utilizing the unique properties of quantum systems. The project methodology involves the implementation of quantum algorithms, including quantum gates, to achieve the desired PWM signal characteristics. The essence and core of this work is based on the development of a novel design and implementation of a quantum comparator that can compare two real numbers, a crucial component for achieving a quantum Pulse Width Modulation (PWM) solution. Existing quantum comparators described in the literature only handle binary values and cannot handle superposed quantum states representing probabilistic values other than 0 et 100%. Through a detailed analysis, we were able to divide our proposed solution into two parts, each handling complementary probabilistic intervals. By merging these two quantum circuits, we achieve comprehensive management of real number intervals ranging from 0 to 100%. Additionally, we compare the performance of the quantum-based PWM generation ap- proach with conventional classical methods applied in a closed loop for controlling the speed of a DC motor in terms of signal quality and performance, response to the refer- ence, and potential quantum advantages