Power electronics control systems play a pivotal role in modern electrical engineering applications, facilitating efficient energy conversion and management across various sectors such as renewable energy, electric vehicles, industrial automation, and consumer electronics. This paper provides a comprehensive introduction to power electronics control systems, covering fundamental principles, key components, and control strategies employed in the field. Beginning with an overview of power electronics devices such as rectifiers, inverters, and converters, the paper delves into the intricacies of control methodologies utilized to regulate voltage, current, and power flow. Topics including pulse-width modulation (PWM), voltage and current feedback loops, and advanced control algorithms are explored to elucidate their significance in achieving optimal performance, stability, and reliability in power electronic systems. Moreover, the paper discusses emerging trends and challenges in power electronics control, including the integration of smart grid technologies, digital control techniques, and the quest for higher efficiency and power density.