Work

An Overview of Permanent Magnet Generator Architectures and Control for Wave Energy Conversion Systems

Year: 2025

Type: article

Abstract: Wave energy is gaining momentum as a viable and environmentally sustainable source of renewable power, with the potential to contribute significantly to the global energy mix. Central to wave energy conversion is the power take-off system, where electromagnetic generators play a crucial role in determining overall system performance, reliability, and efficiency. This paper provides a review of wave energy conversion devices and classifies the main power take-off mechanisms. It evaluates and compares key generator types based on their performance under wave energy conditions. Among these, Permanent Magnet Synchronous Generators have demonstrated strong potential due to their high efficiency, power density, and suitability for low-speed direct drive configurations typical of wave environments. The review presents a detailed analysis of advanced permanent magnet generator topologies, focusing on structural designs, control methods, and wave-specific trade-offs. It also investigates hierarchical control strategies, where high-level decisions are based on wave conditions and low-level control ensures accurate generator operation. The paper aims to provide a broad perspective on the design and control of electromagnetic generators for wave energy systems.

Source: Energies

DOI: 10.3390/en19010134

Authors: Bhavana Mudigonda, Giacomo Moretti, Elisabetta Tedeschi

Institutions: Norwegian University of Science and Technology, University of Trento

Language: English

Topic: Wave and Wind Energy Systems

Subfield: Ocean Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $3,137