• Title, Summary, Keyword: IPMSM

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Speed Estimation and Control of IPMSM Drive using NFC and ANN (NFC와 ANN을 이용한 IPMSM 드라이브의 속도 추정 및 제어)

  • Lee Jung-Chul;Lee Hong-Gyun;Chung Dong-Hwa
    • The Transactions of the Korean Institute of Power Electronics
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    • v.10 no.3
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    • pp.282-289
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    • 2005
  • This paper proposes a fuzzy neural network controller based on the vector control for interior permanent magnet synchronous motor(IPMSM) drive system. The hybrid combination of neural network and fuzzy control will produce a powerful representation flexibility and numerical processing capability This paper does not oかy presents speed control of IPMSM using neuro-fuzzy control(NFC) but also speed estimation using artificial neural network(ANN) controller. The back propagation neural network technique is used to provide a real time adaptive estimation of the motor speed. The error between the desired state variable and the actual one is back-propagated to adjust the rotor speed, so that the actual state variable will coincide with the desired one. The back propagation mechanism is easy to derive and the estimated speed tracks precisely the actual motor speed. Thus, it is presented the theoretical analysis as well as the analysis results to verify the effectiveness of the proposed method in this paper.

Thermal Characteristic Analysis of IPMSM for Traction Considering a Driving Pattern of Urban Railway Vehicles (도시철도차량의 운행패턴을 고려한 견인용 IPMSM의 열 특성 분석)

  • Park, Chan-Bae;Kim, Jae-Hee;Lee, Su-Gil
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.63 no.3
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    • pp.431-436
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    • 2014
  • In this paper, temperature change properties on the 210kW-class Interior Permanent Magnet Synchronous Motor (IPMSM) are performed with the cooling performance of a water cooling device through the thermal characteristic analysis of the IPMSM considering a real driving pattern of urban railway vehicles. First, the thermal analysis modeling of 210kW-class IPMSM, which is an alternative to the conventional induction motor, and its water cooling device is conducted. Next, the thermal characteristic analysis of the IPMSM considering a real driving pattern of urban railway vehicles is performed using 2-Dimensional FEM tool. Finally, the calculated characteristic results are analyzed. Consequently, it is confirmed that the internal temperature of the 210kW-class IPMSM may be lowered to about 42~52% by maintaining the coolant flow rate of the water cooling device (Cross sectional shape of the pipe has 220mm width and 10mm height) for 0.2kg/s level.

A study on the Reduction of the Stator iron loss on Permanent Magnet Synchronous Motor for Light Railway Transit Propulsion System (경량전철 추진용 영구자석 동기전동기의 고정자 철손 저감 연구)

  • Park, Chan-Bae;Lee, Hyung-Woo;Lee, Byung-Song
    • Journal of the Korean Society for Railway
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    • v.15 no.4
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    • pp.376-380
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    • 2012
  • A study on the iron-loss reduction of 110kW-class Interior Permanent Magnet Synchronous Motor (IPMSM) for Light Railway Transit (LRT) is conducted. In general, the iron loss of IPMSM depends on the characteristics of core material and non-oriented electrical steel is used as a core material of IPMSM. In order to reduce the iron-loss of IPMSM, both non-oriented electrical steel and grain oriented electrical steel are applied as core material. Iron loss of 110kW-class IPMSM can be reduced approximately 40% comparing to an existing IPMSM by applying grain oriented electrical steel to the stator teeth.

Efficiency Optimization Control for Energy Saving of IPMSM Drive (IPMSM 구동의 에너지 절감을 위한 효율 최적화 제어)

  • 정동화;이정철;이홍균
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.51 no.12
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    • pp.697-703
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    • 2002
  • Interior permanent magnet synchronous motor(IPMSM) is widely used in many applications such as an electric vehicle, compressor drives of air conditioner and machine tool spindle drives. In order to maximize the efficiency in such applications, this paper is proposed the optimal control method of the armature current. The controllable electrical loss which consists of the copper loss and the iron loss can be minimized by the optimal control of the armature current. The minimization of loss is possible to realize efficiency optimization control for the proposed IPMSM The optimal current can be decided according to the operating speed and the load conditions. The proposed control algorithm is applied to IPMSM drive system, the operating characteristics controlled by efficiency optimization control are examined in detail by simulation.

Study on the characteristics of IPMSM according to the ratio of magnetic and reluctance torque (마그네틱 토크와 릴럭턴스 토크 비율에 따른 IPMSM의 출력 특성에 관한 연구)

  • Kwon, Soon-O;Lee, Ji-Young;Fang, Liang;Zhang, Peng;Hong, Jung-Pyo
    • Proceedings of the KIEE Conference
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    • pp.853-854
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    • 2006
  • Interior permanent magnet synchronous motor(IPMSM) has higher power density than other PM(permanent Magnet) machines due to reluctance torque in addition to magnetic torque, and the ratio of magnetic and reluctance torque has influences on motor characteristics such as input current, efficiency, power factor, etc. Therefore, this paper presents the output characteristics of IPMSM according to the ratio magnetic and reluctance torque of IPMSM and discuss the design strategy of IPMSM.

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Neural Network Parameter Estimation of IPMSM Drive using AFLC (AFLC를 이용한 IPMSM 드라이브의 NN 파라미터 추정)

  • Ko, Jae-Sub;Choi, Jung-Sik;Chung, Dong-Hwa
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.60 no.2
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    • pp.293-300
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    • 2011
  • A number of techniques have been developed for estimation of speed or position in motor drives. The accuracy of these techniques is affected by the variation of motor parameters such as the stator resistance, stator inductance or torque constant. This paper is proposed a neural network based estimator for torque and stator resistance and adaptive fuzzy learning contrroller(AFLC) for speed control in IPMSM Drives. AFLC is chaged fuzzy rule base by rule base modifier for robust control of IPMSM. The neural weights are initially chosen randomly and a model reference algorithm adjusts those weights to give the optimum estimations. The neural network estimator is able to track the varying parameters quite accurately at different speeds with consistent performance. The neural network parameter estimator has been applied to slot and flux linkage torque ripple minimization of the IPMSM. The validity of the proposed parameter estimator and AFLC is confirmed by comparing to conventional algorithm.

Sliding Mode Observer for Sensorless Control of IPMSM Drives

  • Jung, Young-Seok;Kim, Marn-Go
    • Journal of Power Electronics
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    • v.9 no.1
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    • pp.117-123
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    • 2009
  • This paper presents a sliding mode observer for the sensorless control of interior permanent magnet synchronous motor (IPMSM) drives. The sliding mode observer has been presented as a robust estimation method. Most of these previous works, however, were not for an interior PMSM (IPMSM), but for a non-salient pole PMSM and its observer design is conducted in the stationary reference frame. Thus, in this paper, we investigate the design of a sliding mode observer and its driving characteristics for an IPMSM. The proposed sliding mode observer is designed in the rotating reference frame, and good drive performance is achieved even when the observer parameters are mismatched with those of an actual motor. The proposed method is applied to a 600W IPMSM, and, then, the measurement results are presented.

A Study on the Water-cooling Jacket Design of IPMSM for Railway Vehicles (철도차량용 IPMSM의 Water-cooling Jacket 설계 연구)

  • Park, Chan-Bae;Lee, Jun-Ho;Lee, Byung-Song
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.62 no.10
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    • pp.1475-1480
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    • 2013
  • In this paper, the basic design study of a water-cooling jacket, which have reported no cases for applying to railway traction motors so far, were conducted for applying to Interior Permanent Magnet Synchronous Motor (IPMSM) for railway vehicles. The basic thermal characteristics analysis of the 110kW-class IPMSM was performed by using 3-dimentional thermal equivalent network method. The necessary design requirements of the water-cooling jacket were derived by analyzing the results of the basic thermal properties. Next, the thermal characteristics analysis technique was established by using the equivalent model of the solenoid-typed pipe to be installed on the inside of the water-cooling jacket for 110kW-class IPMSM. Finally, a design model of 6kW-class water-cooling jacket was derived through the analysis of various design parameters.

The Reluctance Torque Estimate by Linkage Flux Calculation of IPMSM (IPMSM의 쇄교자속 계산을 통한 릴럭턴스 토크 산정)

  • Cho, Gyu-Won;Kim, Cheol-Min;Lee, Jung-Gyu;Kim, Gyu-Tak
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.62 no.2
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    • pp.171-176
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    • 2013
  • Classically, reluctance torque of IPMSM(Interior Permanent Magnet Synchronous Motor) by using inductance according to current phase angle generates an error. This error is affected by total torque. From current phase angle $0^{\circ}$ to large errors will occur, because reluctance torque include current phase angle. But, reluctance torque from steady-state voltage equation of IPMSM is represented by linkage flux. So, reluctance torque is unrelated to the current phase angle formula can be derived. In this paper, operating torque was analyzed by d, q-axis linkage flux of IPMSM and reluctance torque to perform calculations reduced the error of the total torque calculation.

A Design Method of 2D Look-up Table of IPMSM for Electric Vehicle (전기자동차 구동용 IPMSM의 2D Look-up Table 작성기법)

  • Won, Il-Kwon;Kim, Do-Yun;Ko, An-Yeol;Lee, Jung-Hyo;Kim, Young-Real;Won, Chung-Yuen
    • Proceedings of the KIPE Conference
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    • pp.104-105
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    • 2013
  • When actual IPMSM is driving, it is difficult to figure out the correct current during the current control period due to the operation speed limit of digital signal processing. Therefore, in order to control IPMSM for electric vehicle efficiently, we should design 2D Look-up Table to find out optimal current reference corresponding to speed and torque of IPMSM. This paper explains the design method of 2D Look-up Table for optimal current control of constant torque area and constant output area of IPMSM for electric vehicle. Finally, experimental results are presented to verify the reliability of 2D Look-up Table.

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