Overview of Stator-Permanent Magnet Brushless Machines

TLDR

Permanent magnet (PM) brushless machines having magnets and windings in the stator (the so‑called stator‑PM machines) have attracted increasing attention over the past decade because of their robust structure, high power density, and high efficiency. This paper presents an overview of stator‑PM machines, emphasizing concepts, operation principles, machine topologies, electromagnetic performance, and control strategies. The paper describes both brushless AC and DC operation modes and discusses the latest developments of stator‑PM machines. The key features, merits, and drawbacks of stator‑PM machines are summarized.

Abstract

Permanent magnet (PM) brushless machines having magnets and windings in stator (the so-called stator-PM machines) have attracted more and more attention in the past decade due to its definite advantages of robust structure, high power density, high efficiency, etc. In this paper, an overview of the stator-PM machine is presented, with particular emphasis on concepts, operation principles, machine topologies, electromagnetic performance, and control strategies. Both brushless ac and dc operation modes are described. The key features of the machines, including the merits and drawbacks of the machines, are summarized. Moreover, the latest development of the machines is also discussed.