Permanent-Magnet Motors for Energy Savings in Industrial Applications

Melfi, M.J.; Rogers, Steven D.; Evon, S.; Martin, BC

doi:10.1109/tia.2008.2002174

Cited by 31 publications

(8 citation statements)

References 3 publications

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“…Energy savings: The key factor in the higher efficiency of PM motors is the lower losses rotor losses compared to induction motor. For the ranges under consideration, PM motors typically are 4–7% higher in efficiency due to the absence of rotor losses where the field interacting with the stator is provided by the permanent magnets [4], [16], [17], [18]. Not only PM motors have high efficiency but they can also maintain such high efficiency from 60% to 100% of full load [18].…”

Section: Methods and Modelsmentioning

confidence: 99%

“…For the ranges under consideration, PM motors typically are 4–7% higher in efficiency due to the absence of rotor losses where the field interacting with the stator is provided by the permanent magnets [4], [16], [17], [18]. Not only PM motors have high efficiency but they can also maintain such high efficiency from 60% to 100% of full load [18]. In contrast, induction motors achieve their highest efficiency at about 60–70% of full load and this efficiency drops as loading increases.…”

Section: Methods and Modelsmentioning

confidence: 99%

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The impact of demagnetization on the feasibility of permanent magnet synchronous motors in industry applications

Adly

Huzayyin

2019

Journal of Advanced Research

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Section: Methods and Modelsmentioning

confidence: 99%

Section: Methods and Modelsmentioning

confidence: 99%

The impact of demagnetization on the feasibility of permanent magnet synchronous motors in industry applications

Adly

Huzayyin

2019

Journal of Advanced Research

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“…An alternative solution is to replace traditional induction motors with high-efficiency permanent magnet (PM) motors. Due to a drastic reduction in price of PMs in recent years, wide applications of PM motors, which are gaining ground, have become possible [2]. Rare earth PMs have many advantages, such as: strong shape plasticity, high utilization rate of raw materials, and, easy mass production [3].…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of Permanent Magnet Arrangement in Synchronous Motors

Liu

Lin

2017

Energies

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A general pattern, which can include different types of permanent magnet (PM) arrangement in PM synchronous motors (PMSMs) is presented. By varying the geometric parameters of the general pattern, the template can automatically produce different types of PM arrangement in the rotor. By choosing the best arrangement of PMs using optimization method, one can obtain a better performance and lower manufacturing cost. Six of the most widely used conventional types of rotor structures can be obtained through the parameter variation of the general pattern. These types include five embedded PM types and a traditional surface-mounted PM type. The proposed approach combines optimization method embedded with finite element method (FEM) for solving the multi-objective optimization for the PM structures. To save computing load, this paper employs a strategy of sub-group optimization, which is on account of the impact levels of the design parameters on the objective functions, and a parallel computation, which is a valid method to shorten the computing time. As an application example, a PMSM is optimally designed. Its simulation results and prototype experiments are provided to showcase the effectiveness of the proposed method.

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“…Rather, windings in EMAs can overheat rapidly depending on the demands, at which point materials can degrade. Neodymium-iron-boron is one of the most powerful permanent magnets (PMs) for electric motors, but it begins to demagnetize at relatively low temperatures [6], with an operating range upper limit of 120 • C to 180 • C. Although effective, liquid cooling reinstitutes one of the systems that are being eliminated. Primary flight control actuators are of particular relevance because they are continually engaged during flight, are required to accelerate rapidly, and are often faced with high wind loads.…”

Section: Introductionmentioning

confidence: 99%

High-Performance Electromechanical Actuator Dynamic Heat Generation Modeling

Woodburn

Tie-jun

Zhou

et al. 2014

IEEE Trans. Aerosp. Electron. Syst.

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All-electric aircraft is a high-priority goal in the avionics community. Both increased reliability and efficiency are the promised implications of this move. But, thermal management has become a significant problem that must be resolved before reaching this goal. Electromechanical actuators (EMAs) are of special concern. Advanced analysis technologies such as the finite element method (FEM) and intelligent control systems such as field-oriented control (FOC) are being used to better understand the source of the heat and to eliminate as much of it as possible. This paper describes the nonlinear, lumped-element, integrated modeling of a permanent magnet (PM) motor used in an EMA. The parameters, including nonlinear inductance, rotor flux linkage, and thermal resistances and capacitances, are tuned using FEM models of a real, commercial actuator. The FOC scheme and the lumped-element thermal model are also described.

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Permanent-Magnet Motors for Energy Savings in Industrial Applications

Cited by 31 publications

References 3 publications

The impact of demagnetization on the feasibility of permanent magnet synchronous motors in industry applications

The impact of demagnetization on the feasibility of permanent magnet synchronous motors in industry applications

Optimal Design of Permanent Magnet Arrangement in Synchronous Motors

High-Performance Electromechanical Actuator Dynamic Heat Generation Modeling

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