High Efficiency Induction Motor Research Articles

Design and performance analysis of a high-efficiency Y3 induction motor

Induction motors have been applied in industrial domain, agriculture, transportation, national defence industry and other industries because of their advantages of simple structure, small inertia, low cost and long time working at high speed and high temperature. In this paper, particle swarm optimization algorithm (PSO) is applied to the optimal design of Y3 series asynchronous motors to achieve the highest efficiency. Secondly, the RMxprt module of Ansoft was used to design a Y3 high-efficiency induction motor with a certain power level using particle swarm optimization (PSO). Maxwell module was used to carry out finite element analysis to calculate the magnetic density and flux distribution of stator and rotor. The simulation results of stator current, flux, induction voltage and transient torque show that the performance indexes of Y3 induction motor designed in this paper meet the design requirements which verify the rationality of the design.

파라미터 학습을 통한 프리미엄 고효율 유도 전동기의 다중 목적 최적 설계

In this paper, the optimum design of a 3.7kW premium high-efficiency induction motor was proposed for reducing the cost using a low-grade iron core while maintaining the efficiency of the motor using a high-grade iron core. Global Response Surface Method(GRSM), one of the multi-objective optimization techniques, was used to satisfy the multi-objective optimization such as complex design problems with cost and production ranges. And GRSM performs the parallel analysis for accurate and efficient optimization search, including local and global search functions. In addition, the commercial optimization program HyperStudy and the electromagnetic FEM solver were used for the characteristic analysis of the motor. As a result of optimization, the price of optimum model was decreased 8% compared with the base model. The reliability of the proposed method was verified by the experiment.

Structural Optimizations of High-efficiency Direct-On-Line Synchronous Reluctance Motors for Metal Industry Applications

To meet the severe operating conditions in the metal industry, more thorough design and operational assessments about those implemented electric motors for specific applications must be emphasized. With its inherent robust structure, the induction motor is generally adopted to fulfill such driven objective. However, due to global warming and energy conservation concerns, those strictly enforced regulations have potentially increased the complexity and cost of high efficiency induction motor. Since the synchronous reluctance motor (SynRM) has relatively simpler structure with no copper loss in its rotor, it is a very attractive alternative for accomplishing the high-efficiency objectives of those common hoist, punch, roller, and pump applications. In addition, to eliminate drive circuits that can further reduce the overall system construction costs, the rotor barriers of the SynRM can be equipped with direct-on-line capability (DOL_SynRM) with conductors filled in. The impacts to the operational performance of these DOL_SynRMs for different applications will all be thoroughly investigated. The competitive high-efficiency DOL_SynRMs for driving various metal industry equipment can thus be offered.

Comparison of Commercial and Open-Source FEM Software: A Case Study

5-kW high-efficiency induction motor is analyzed using two-dimensional (2-D) open-source platform and the results are compared with commercial software and measurements. The importance of equivalent circuit parameters in 2-D analyses is highlighted. The noncommercial and commercial software give similar results. The motor is further analyzed in the 2.5-D domain and the results are compared with measured results. The losses obtained with 2-D, 2.5-D, and using the IEC segregation procedure of losses procedure are compared. The performance of an induction machine depends significantly on different parameters such as air gap and stator tooth tip height. Their impact on losses is studied with open-source finite-element analysis. The benefit of this open-source platform in the electrical motor analysis is the ability to use parallel-computing effectively and reduce the time required to solve the electromagnetic problem. Other benefits are the transparency of all features of the software and license-free usage. It is concluded that in 2-D analyses, the open-source software can be used on industrial-scale problems as it showed acceptable results for losses, and lower computational time when using appropriate mortar and conforming boundary conditions.

High-Efficiency Induction Motor with Small Gap Length and Magnetic Wedges

The main purpose of our study is to improve efficiency of an induction motor. This paper describes a design approach to decrease stray load loss including loss due to structures (called fundamental losses) and PWM waveforms (called harmonic losses) using magnetic field analysis, where small air gap length and magnetic wedges were applied. It was clarified that reducing the air gap length and applying the magnetic wedges decreased both fundamental loss and harmonic losses. Therefore, the combination of the stray load loss and iron loss of the developed motor was 32% less than that of the conventional one. Moreover, the total loss of the developed motor was reduced by 63% compared with the conventional one, and its fficiency was increased from 95.5% to 96.8%.

Reliability Comparison Between Standard and High Efficiency Induction Motor Using Vector Control Method

Reliability Comparison Between Standard and High Efficiency Induction Motor Using Vector Control Method

Multi objective design of high efficiency induction motor using an analytical method's

Multi objective design of high efficiency induction motor using an analytical method's

Analysis of Combined Motor Current Signature and Vibration-Monitoring Techniques in the Study of Broken Bars in Three-Phase High-Performance Induction Motors

Anomalies in operation of the motor modify harmonic content of motor supply current. Motor electrical current signature analysis (MCSA) is sensing an electrical signal containing current components. In this work, by introducing progressive failures to a healthy motor, we investigated the efficacy of combining motor current signature analysis with vibration-monitoring techniques for the detection of broken bars in the squirrel-cage rotors of three-phase high-efficiency induction motors, which are the new standard in Brazilian industry. Our results demonstrate that the combined approach improves reliability in the diagnosis of broken bars.

Reliability and Operation of High-Efficiency Induction Motors

Reliability and Operation of High-Efficiency Induction Motors

3ph High Efficiency Induction Motors with IFOC Applied to a Wheelchair by Joystick

Most of the wheelchair's drive systems uses direct-current (DC) motors as propulsion. However, such motors have several drawbacks aspects, as higher cost and maintenance, resulting in its gradual disuse. An option already consolidated in the industrial area is the high efficiency squirrel-cage induction motor, which has high energy efficiency and low maintenance, compared to DC motors. The use of induction motors applied to wheelchair tend to increase with the advancement of microelectronics and power electronics. This paper presents a relevant proposal in drive and control of power wheelchairs through three-phase induction with vector control. The system's power supply comes from batteries, which are suitable for the static converter. A digital signal controller (DSC) performs the reading joystick and vector control of three-phase induction motor. Experimental results with wheelchair developed denote viability and functionality for paraplegic patients.

Rotor Design for an Efficient Single-Phase Induction Motor for Refrigerator Compressors

This article describes a rotor making technology for the production of high-efficiency single-phase induction motors (SPIMs) to be used in refrigerator compressors. Rotors can have different aluminum fill factors according to the fabrication method. In order to examine the association between the fill factor and the efficiency of the rotor, we analyzed the distribution of magnetic flux density using the finite element method (FEM). Next, we made prototype rotors by conventional casting methods and by the proposed casting method and compared their fill factors. In addition, SPIMs were made using the rotors, and their efficiencies were measured using a dynamometer. Moreover, the SPIMs were put to use in a compressor, for testing, and for each SPIM the refrigerating capacity of the compressor was measured with a calorimeter. Based on the results of the FEM analysis of the magnetic flux density and the experiments, the reliability and validity of the proposed method were proven.

A Loss-Minimization Port-Controlled Hamilton Scheme of Induction Motor for Electric Vehicles

This paper is devoted to the loss model-based controller for an induction motor that propels an electric vehicle (EV). A novel loss calculation method is obtained via the energy balance equation of the induction motor's port-controlled Hamilton model. Since all parameters of the motor are taken into account, the proposed strategy is much more accurate than the conventional loss calculation method. Based on the conceived loss model, a novel loss minimization algorithm is designed. Furthermore, the proposed algorithm is implemented based on the method of interconnection and damping assignment, which offers a high-efficiency induction motor driving solution for EVs. Simulation tests are finally conducted to verify the consistency and the performance of the adopted control scheme.

Development of a High Efficiency Induction Motor and the Estimation of Energy Conservation Effect

Induction motors are widely used as traction motors on trains. Because energy loss from traction motors accounts for a large portion of energy consumption in commuter trains, highly efficient traction motors are very effective in saving energy. A high efficiency induction motor was therefore developed. Its efficiency was verified through analysis and tests with a prototype machine. This paper presents the calculation results of running simulations for estimating the energy conservation effect of the high efficiency induction motor. The results indicate that the energy consumption is reduced by 6% to 11%.

Design and Efficiency Evaluation of a High-Efficiency Induction Motor for Railway Traction

In commuter trains, a large portion of the energy consumption is caused by losses from traction motors. Therefore, highly efficient traction motors are very effective at saving energy. We developed an induction motor with a high efficiency of 95.5%. This paper presents the design and efficiency evaluation of the prototype machine.

Study on Die Construction and Conceptual Design for High-efficiency Induction Motor Prototype

In this paper, concepts for high-efficiency induction motor with sharing core 37kw and below are established and a prototype is constructed. The need for developing high-efficiency induction motor die can be analyzed in terms of electromagnetic design and analyzing technique, mechanical design technology, material technology, and production technique. In order to produce prototypes, motor design, property analysis, and comparison of material cost and efficiency are needed. Methods for such include basic motor design, experiment design, equivalent circuit method, and finite element method. Among these, experiment design can be assessed according to optimal design, main factors, optimal regions, and others. For producing die for constructing prototype, inspection of die development process during die design, understanding of details stage by stage, and optimization of strip layout are essential. When constructing dies, improvement on causes of wear of punch, improvement of equipment and surrounding devices, adjustment of post structure for improvement of die durability, and shear load distribution analysis are necessary. Based on these factors, highefficiency induction motor prototypes for 5.5kw, 7.5kw, 11kw, 4 polar, and 6 polar sharing cores are constructed.

Development of a High Speed Induction Motor for Spindle Systems

This paper deals with the analysis techniques of a high speed and high efficiency 10 kW, 30 000 rpm rated induction motor. The induction motor has been analyzed by the time-varying magnetic finite element method and the test results show that there is a possibility that the motor could be used in a high speed spindle system application. All performances of the prototype are successfully verified. All analysis techniques are introduced to develop a high speed and high efficiency induction motor made by copper die casting. The analysis techniques are composed of magnetic analysis, structural analysis, critical speed analysis, unbalance response analysis and computational fluid dynamics (CFD). CFD simulation results are compared with the experiment, and are within a 5% deviation.

An Analytical Approach for a High Speed and High Efficiency Induction Motor Considering Magnetic and Mechanical Problems

This paper deals with the analysis techniques of a high speed and high efficiency 10 kW, 30,000 rpm rated induction motor. The induction motor has been analyzed by time-varying magnetic finite element method and the test results show that there is a possibility that the motor could be used in a high speed spindle system application. All analysis techniques are introduced to develop a high speed and high efficiency induction motor made by copper die casting. The analysis techniques are composed of magnetic analysis considering losses and input current (PWM and sinusoidal), structural analysis of rotor and stator, 3-D rotordynamic analysis and 3-D CFD. All performances of the prototype are successfully verified.

Analysis of high speed induction motor for spindle made by copper die casting process

This paper deals with the analysis techniques of a high speed and high efficiency 10 kW, 30,000 rpm rated induction motor. The induction motor has been analyzed by time-varying magnetic finite element method and the test results show that there is a possibility that the motor could be used in a high speed spindle system application. All performances of the prototype are successfully verified. All analysis techniques are introduced to develop a high speed and high efficiency induction motor of copper die casting. The analysis techniques are composed of an electrical technique (magnetic analysis), and a mechanical technique (casting analysis, structural analysis, critical speed analysis and unbalance response analysis). Simulation results are compared with the experiment, and are within a 3% deviation.

Optimizing Design Variables for High Efficiency Induction Motor Considering Cost Effect by Using Genetic Algorithm

The characteristics of an induction motor vary with the number of parameters and the performance relationship between the parameters also is implicit. In case of the induction motor design, we generally should estimate many objective physical quantities in the optimization procedure. In this article, the multi objective design optimization based on genetic algorithm is applied for the three phase induction motor. The efficiency, starting torque, and material cost are selected for the objectives. The validity of the design results is also clarified by comparison between calculated results and measured ones.

Multi optimization of high efficiency induction motor considering cost effect

The characteristics of an induction motor vary depending upon the number of parameters and the performance relationship between the parameters is also implicit. In the case of the induction motor design, we should generally estimate the many objective physical quantities in the optimization procedure. In this article, the multi objective design optimization based on a genetic algorithm is applied for a three phase induction motor. The efficiency, starting torque, and material cost are selected as the objectives. The validity of the design results is also clarified by comparison between the calculated results and the measured ones.