Power Inverters: Theoretical concepts and experimental demonstration

Abstract Power inverters are electrical circuits capable of transforming direct current (DC) into alternating current (AC). Currently, due to the growing trend to replace combustion engines with electric motors and also for the production of residential solar electric power, power inverters are playing a fundamental role in mediating electricity generating sources with different types of loads, which include domestic applications, automotive and industrial. In this work, we intend to explore basic theoretical concepts on the operation of power inverters and demonstrate their principle of operation through simplified experiments. These experiments have an analytical character and can be introduced in undergraduate courses with specific practical subjects for students in physics or engineering courses.

摘要：功率逆变器（Power Inverter）是可将直流电（Direct Current，DC）转换为交流电（Alternating Current，AC）的电气电路。当前，随着以电动机替代内燃机的趋势日益凸显，加之户用太阳能发电产业的蓬勃发展，功率逆变器在协调各类发电源与不同负载的适配工作中发挥着核心作用，其应用场景涵盖民用、汽车及工业领域。本研究旨在探究功率逆变器运行的基础理论概念，并通过简化实验演示其工作原理。此类实验具备分析性特征，可面向物理或工程专业的本科生，纳入其配套的专属实践课程教学内容中。