Power Electronics Overview

Principles

Definition

Power electronics is a research field within electrical engineering focused on the efficient conversion, control, and conditioning of electrical power. It investigates the principles, circuits, components, and systems designed to process electrical energy, primarily employing power semiconductor switching devices operating in high-efficiency modes. The field encompasses the study of power converter topologies, modulation strategies, control algorithms, and the characteristics and application of power semiconductor devices. Its significance lies in enabling energy efficiency, facilitating the integration of diverse power sources (including renewables), and serving as a foundational technology for modern electrical systems across various applications, such as electric vehicles, industrial drives, and power grids.

Ontological type

Core Converter Topologies

Semiconductor Devices

Control and Modulation

Key developments

Key Figures

Modeling and Switching Foundations era

Hirofumi Akagi [1] emerges as a leading figure in Modeling and Switching Foundations (1947–1982), with affiliations at Tokyo Institute of Technology [3] and Nagaoka University [4] during this era. In 1981 he introduced A New Neutral-Point-Clamped PWM Inverter [7], a contribution that anchored PWM-based switching representations as core tools for analyzing and designing power conversion systems in this era. Martin A. Green [2] is a central figure, associated with Tufts University [5] and The University of Queensland [6] during this era. His 1974 work Minority carrier MIS tunnel diodes and their application to electron- and photo-voltaic energy conversion—I. Theory [8] provided a theoretical foundation for modeling energy-conversion devices and helped steer the adoption of minority-carrier concepts in power electronics research.

High-Frequency and Multilevel Topologies era

Fang Zheng Peng [1] is a leading figure in power electronics during the era of High-Frequency and Multilevel Topologies, with research activity at Georgia Institute of Technology [3] and Zhejiang University [4]. His key contributions include the Z-source inverter [7] and Multilevel converters—a new breed of power converters [8], which addressed switching losses and enabled higher operating frequencies and compact topologies in this era. Jih-Sheng Lai [2] is associated with University of Virginia [5] and University of Tennessee at Knoxville [6] during this era. His landmark contributions include the Multilevel converters—a new breed of power converters [8] and the A multilevel voltage-source inverter with separate DC sources for static VAr generation [9], which helped establish multilevel architectures as a standard for voltage scalability and reactive-power support in high-frequency converters.

Grid-Interactive Wide-Bandgap Power Electronics era

Frede Blaabjerg [1] is prominently associated with Nanyang Technological University [3] and the University of Hong Kong [4] during this era of grid-interactive wide-bandgap power electronics. His contributions include the paper Control of Power Converters in AC Microgrids [7], Toward Reliable Power Electronics: Challenges, Design Tools, and Opportunities [8], and Modeling and Analysis of Harmonic Stability in an AC Power-Electronics-Based Power System [9], collectively advancing grid-supportive controls, reliability assessment, and stability insights essential for scalable DER integration. Yury Gogotsi [2] is associated with Massachusetts Institute of Technology [5] and the University of Pennsylvania [6] during this era. His 2014 paper Where Do Batteries End and Supercapacitors Begin? [10] highlights the evolving boundary between energy storage technologies and informs storage integration strategies crucial for grid-interactive, fast-switching wide-bandgap power electronic interfaces.