Single-Stage Step up/down Driver for Permanent-Magnet Synchronous Machines

Position/speed Sensorless Control for Permanent-magnet Synchronous Machines

Implementation and Long-step Sensorless Control of Permanent Magnet Synchronous Machines (pmsm) for Subsea Applications

By design, the operation of a large 3MW permanent magnet motor-driven pump system has the potential to improve system efficiency and reliability to lower operator costs. Subsea electrical system design and motor performance must be predictable and validated prior to deployment. Critical elements of this system include successful remote start-up and step up–step down transformers. A number of di...

Maximum Efficiency per Torque Control of Permanent-Magnet Synchronous Machines

Abstract: High-efficiency permanent-magnet synchronous machine (PMSM) drive systems need not only optimally designed motors but also efficiency-oriented control strategies. However, the existing control strategies only focus on partial loss optimization. This paper proposes a novel analytic loss model of PMSM in either sine-wave pulse-width modulation (SPWM) or space vector pulse width modulati...

Mathematic Model for Permanent - Magnet Synchronous

This paper introduces a new method to model the permanent magnet synchronous machines (PMSMs) with saliencies due to the salient structure and magnetic saturation. Two parameters are defined to indicate these saliencies, i.e. the structural saliency ratio (Kstr) and the saturation saliency ratio (Ksat). To verify the nonlinear model, a real PMSM is tested and numerically simulated. The nonlinea...

Design and Rotor Geometry Analysis of Permanent Magnet–assisted Synchronous Reluctance Machines Using Ferrite Magnet

Various electric machines can be the candidate for electric vehicles applications, including induction machines, permanent magnet synchronous machines, switched reluctance machines, etc. Another class of machine, which has been relatively ignored, is synchronous reluctance machines. In order to enhance and increase torque density of pure synchronous reluctance machines, the low cost permanent m...