• Title/Summary/Keyword: high speed PWM control

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Re-adhesion Control for the Korean High-Speed Railway Train (한국형 고속전철의 추진성능 향상을 위한 재점착 제어기법)

  • Kim, M.S.;Hwang, D.H.;Kim, J.S.;Ryoo, H.J.;Jeon, J.W.;Kim, Y.J.
    • Proceedings of the KIEE Conference
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    • 1999.07a
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    • pp.461-464
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    • 1999
  • To improve traction effort performance and stability for the Korean High-Speed Railway Train, practical re-adhesion controller including a novel anti-slip control scheme is proposed. The presented method is verified by train running simulation results based on induction motor vector control with PWM inverter.

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A Study on torque characteristics and rapid response control of induction motor by vector control system (벡터제어 시스템에 의한 유도 전동기의 속응제어와 토오크 특성에 관한 연구)

  • Hwang L.H.;Jang E.S.;Nam W.Y.;Cho S.R.;Shin Y.H.;Cho M.T.;Lee C.S.;Na S.K.
    • Proceedings of the KIPE Conference
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    • 2003.07b
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    • pp.807-811
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    • 2003
  • In this paper, the speed control system of induction motor was proposed using vector control algorithm and space voltage vector PWM method to improve the dynamic performance of Induction motor. The control system is composed of the PI controller for speed control and the current controller using space voltage vector PWM technique. The high-speed calculation and processing for vector control is carried out by TMS320C31 digital signal processor and IGBT module. The proposed scheme is verified through digital simulations and experiments for 3.7[kw] induction motor and shows good dynamic performance.

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A Study on Technology Development of High Capacity PWM Converter for Electric Vehicle (전기철도용 대용량 PWM 컨버터 기술개발에 관한 연구)

  • Han, Young-Jae;Jo, Jeong-Min;Bae, Chang-Han;Lee, Young-Ho
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.67 no.12
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    • pp.1729-1734
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    • 2018
  • Recently, interest in environmentally friendly transportation systems has been increasing, and study on railway systems has been aggressively conducted. Therefore, lots of studies have been done in railway advanced countries to improve performance of PWM converter. The research on the PWM converter for railway vehicle was mainly carried out on the converter mounted on railway vehicle such as the high-speed railway and metropolitan railway. In also, a lot of study has been carried out to improve converter performance installed in the ground. The high-capacity transform used in this paper converted from AC 22.9kV to AC 590V. The converter changed from AC 590V to DC 950V. In general, in the case of rectifier, the DC power supply system has a negative impact on inverter control characteristics because it can not avoid the pulsating component. In this study, it was performed current control for high-capacity converter using Matlab Simulink. The PWM converter is normally performed through the voltage and current at starting mode, powering mode, and braking mode. In the light-load test and the on-line test, we have studied for the PWM converter characteristics. Using this research, we have founded that the converter has excellent performance.

Development of AC Electric Vehicle Propulsion System (Converter/Inverter) using IPM Switching Device (IPM 스위칭 소자를 적용한 AC 전동차 추진제어장치 (Converter/Inverter) 개발)

  • Kno Ae-Sook;Kim Tae-Yun
    • The Transactions of the Korean Institute of Power Electronics
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    • v.10 no.3
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    • pp.233-240
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    • 2005
  • In this paper, AC electric vehicle propulsion system(Converter/Inverter) using high power semiconductor, IPM is proposed. 2-Parallel operation of two PWM converter is adopted for increasing capacity of system and the harmonic content is eliminated by the phase shaft between two PWM converters switching phase. VVVF inverter control is used a mixed control algorithm, where the vector control strategy at low speed region and slip-frequency control strategy at high speed region. The proposed propulsion system is verified by experimental results with a 1,350kW converter and 1,100kVA inverter with four 210kW traction motors.

A Study for the high speed motor drive system using DSP (DSP를 이용한 초고속 전동기 구동시스템에 관한 연구)

  • 권종혁;안재황;백동기;성세진
    • Proceedings of the KIPE Conference
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    • 1997.07a
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    • pp.436-440
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    • 1997
  • Recently the needs the interest for the high speed motor drive system is increased in many different fields. So in this paper, the high speed motor drive system is proposed to drive the high speed motor using DSP which was developed in order to process datas at high speed. The motor drive is performed using a variable V/f PWM control.

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DSP(TMS320C40) Control of Three-phase PWM AC/DC Converter (TMS320C40을 이용한 3상 PWM AC/DC 컨버터 제어)

  • Byun, Young-Bok;Kim, Eun-Soo;Koo, Heun-Hoi;Joe, Kee-Yeon;Park, Sung-Jun;Kim, Cheul-U
    • Proceedings of the KIEE Conference
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    • 1996.07a
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    • pp.518-520
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    • 1996
  • High frequency switching converters are becoming more popular because of several benefits which are essential in power conversion system. This paper introduces a high speed digital controller using TMS320C40 DSP chip which can be used for high frequency switching converters and demonstrates its performance by operating three-phase PWM AC/DC converter with unity power factor at 20kHz sampling frequency. TMS320C40 DSP chip operates with 40-ns instruction cycle times and is capable of 275 MOPS. The running time of real time control loop at the three-phase PWM AC/DC converter is $44.6{\mu}sec$.

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A Study on the High Performance Speed Control of Induction Motor Using Self-Learning Fuzzy Controller (자기학습형 퍼지제어기에 의한 유도전동기 고성능 속도제어에 관한 연구)

  • Park, Y.M.;Kim, Y.C.;Kim, J.M.;Won, C.Y.;Kim, Y.R.;Kim, H.S.
    • Proceedings of the KIEE Conference
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    • 1997.11a
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    • pp.505-508
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    • 1997
  • In this paper, an auto-tuning method for fuzzy controller based on the neural network is presented. The backpropagated error of neural emulator offers the path which reforms the fuzzy controller's membership functions and fuzzy rule, and used for speed control of induction motor. For the torque control method, an indirect vector control scheme with slip calculation is used because of its stable characteristics regardless of speed. Motor input current is regulated by a current controlled voltage source PWM inverter using space voltage vector technique. Also, the scheme of current control fuzzy controller is synchronous reference frame with decoupling term. DSP(TMS320C31) is used to achieve the high speed calculation of the space voltage vector PWM and to build the self-learning fuzz. control algorithm. An IPM is used to simplify hardware design.

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Harmonics Reduction in the High-Speed Synchronous Reluctance Motor by Space-Vector PWM Control

  • Oh, Sung-Up;Kim, Min-Tae;Seong, Se-Jin;Paek, Tong-Ki
    • Proceedings of the KIPE Conference
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    • 1998.10a
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    • pp.758-762
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    • 1998
  • Many harmonics components are contained within the stator currents of the high-speed synchronous reluctance motor, SynRM, with salient pole rotor. They cause the power factor of SynRM to get worse. In this paper, the mathematical model of SynRM is investigated, and SV_PWM control method is applied to reduce harmonics components in the stator current. Simulation results show the fast response of speed and the reduction of harmonics components at steady state.

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Study on the Implementation of the Digital Controller of High-Speed PWM Current Amplifier (디지털 제어 방식의 고속 PWM 전류 증폭기의 구현에 관한 연구)

  • Ko, Deog-Hwa;Baek, Kwang-Ryul
    • Journal of Institute of Control, Robotics and Systems
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    • v.8 no.2
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    • pp.97-103
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    • 2002
  • This paper deals with a PWM(Pulse Width Modulation) current amplifier using digital controller in order to generate a gradient magnetic field far the MRI(Magnetic Resonance Image) system. Because of tolerance of discrete devices, it is difficult to set accurate values of the control parameters and to make an analog-controlling circuit. However, using digital controller, it is possible to set exact control parameters and to adopt a modern control techniques. It is shown that the digital controller will highly enhance the output current response and it will improve the quality of the MRI.

Experimental Investigation on PWM control of Power-shift Transmission Hydraulic System (파워시프트 변속기 유압시스템의 PWM 제어 실험 연구)

  • Kim, D.C.;Lee, J.K.;Kang, Y.S.;Lee, J.C.
    • Transactions of The Korea Fluid Power Systems Society
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    • v.6 no.3
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    • pp.10-15
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    • 2009
  • The major system of an agricultural power-shift tractor is the transmission, using power-shift. Because the transmission performance depends on the hydraulic control system, the most important aspect of the optimization is the design of the hydraulic control system. This study was conducted to improve a pressure modulation characteristics of the power-shift transmission hydraulic system. It has been tried to replace an existing pressure modulation method with a digital control by using HSSV(High Speed Solenoid Valve). The performance of the PWM control system in power-shift hydraulic transmission has been evaluated by means of experiment.

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