Design and Verification of 150-krpm PMSM Based on Experiment Results of Prototype

Abstract

This paper proposes the design process of a 2.62kW-150krpm high-speed surface-mounted permanent magnet synchronous motor (SPMSM). To meet the required specifications, the numbers of poles and slots were determined by considering the maximum speed and the rotary stability affected by the vibration of the rotor. In addition, the paper describes not only the appropriate material selection method but the appropriate geometry design method based on analytic approaches. Furthermore, to precisely evaluate the bearing and windage losses at a high speed, a method that combines the finiteelement method (FEM) and the experiment results of the prototype was used. As a result, an improved motor was designed, which had higher maximum power and speed than the prototype, and a lower mass moment of inertia. Finally, tests were conducted to verify the validity of the proposed design process and the effectiveness of the motor.Index Terms -Copper loss, eddy current loss, high-speed machine, iron loss, mechanical loss, surface-mounted permanent magnet synchronous motor, vibration T

Performance prediction of surface‐mounted permanent magnet synchronous motor based on ring specimen test result

“…The rotating reference frame is applied in this transformation. This equivalent circuit can be applied to any synchronous motor such as interior permanent magnet synchronous motor (IPMSM) or SPMSM [20,25]. Using 2D FEA, the d-axis and q-axis inductances are calculated for the range of the input current.…”

“…This process is conducted two times for the Epstein frame test result and the ring specimen test result. As a result, two electric motor characteristic curves are created for each test [25]. When solving the d-q-axis equivalent circuit, the voltage equation can be given by (7) and (8).…”

Influence of Magnetic and Nonmagnetic Layers in an Axially Laminated Anisotropic Rotor of a High-Speed Synchronous Reluctance Motor Including Manufacturing Aspects

“…Equipping the solid rotor with a copper cage winding, with copper end rings only or slitting the rotor surface axially, are common ways to improve the performance of a solid rotor IM but lead to a lower mechanical strength and increase the cost of the motor [4]. Permanent magnet synchronous machines (PMSM) are often the choice when high efficiency and power density have a high priority [5]. In an HS application, the strongest mechanical reliability of the HSPMSM can be provided by using rotor retaining sleeves made of rugged materials, such as Inconel, titanium, or carbon fiber [1].…”

An Analytical Solution to the Electromagnetic Performance of an Ultra-High-Speed PM Motor

“…With advancements in new materials, electrical and electronics, control technology, etc., the speed limits of rotating machines are being pushed higher, and ultra-high-speed motors are increasingly used in industry applications [1]. Particularly in recent times, the high-speed PMSM has attracted more attention due to its high efficiency, simple structure, high power density, and small size [2,3]; for example, it can be used as the driving motor for the fuel cell air blower [4,5], as an air centrifugal compressor [6], or as the generator of a micro-gas turbine [7].…”