• Title, Summary, Keyword: BLDC Motor

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Characteristic Analysis of Independent 3 phase BLDC Motor (독립 3상 BLDC 전동기의 특성해석에 관한 연구)

  • Jo, Kwan-Jun;Oh, Jin-Seok
    • The Transactions of the Korean Institute of Power Electronics
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    • v.12 no.4
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    • pp.277-284
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    • 2007
  • This paper describes independent phase BLDC motor with a maximum torque among BLDC motor used for electric propulsion system Independent phase BLDC motor has characteristic that phases of stator we independent electrically. This paper is modeling two type of 3 phases BLDC motors, one has Y-connection type and the other has independent type, and it shows simulation of them, compares its characteristics. As a result of simulation, phase voltage of independent 3 phase BLDC motor is higher than Y-connection three phase BLDC motor. When the stator resistance and inductance are stable, high phase voltage causes an increase in maximum phase current and an increases in it serially causes an increase of maximum torque. It is also found that the current pulsation of independent phase BLDC motor was decreased by controlling phase current of independent BLDC motor.

Characteristic Analysis of Independent 6 phase BLDC Motor (독립 6상 BLDC 전동기의 특성해석에 관한 연구)

  • Jung, Sung-Young;Kong, Young-Kyong;Bin, Jae-Goo;Shin, Pan-Seok;Kim, Jang-Mok;Choi, Hong-Soo;Oh, Jin-Seok
    • Journal of the Korean Society of Marine Engineering
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    • v.33 no.6
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    • pp.939-945
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    • 2009
  • This paper is described BLDC motor in the submarine propulsion system which is asked high power per unit area. This study analyzes the independent 6-phase BLDC motor a specific extended by existing the independent 3-phase BLDC motor and propose forward development direction. Independent 6-phase motor has a characteristics that phases of stator are independent electrically with each other and two's independence 3-phase BLDC motor are linked with each difference of 60 degree. Six-phase BLDC motor is simulated with Matlab-simulink, the simulation result has a high current and low torque pulsation than existent independence 3-phase BLDC motor.

Design and Analysis of Characteristics of Interior Permanent Magnet BLDC Motor That Consider Shape-Ratio of Permanent Magnet (영구자석 형상비를 고려한 영구자석 매입형 BLDC 전동기 설계 및 특성해석)

  • Yun Keun-Young;Rhyu Se-Hyun;Yang Byoung-Yull;Kwon Byung-Il
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.55 no.1
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    • pp.1-8
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    • 2006
  • Now a day, owing to high efficiency and easy speed control of brushless DC(BLDC) motor, the demand of BLDC motor that has high power and low noises are increasing. Especially demand of interior permanent magnet(IPM) BLOC with high efficiency and high power in electric motion vehicle is increasing. IPM BLDC motor has permanent magnets in the rotor. Because it has two different flux paths, magnetic reluctance differences are generated in d-axis and q-axis. As the result of the inductance differences that are generated by the saliency(magnetic reluctance differences) in the rotor, the motor has structure advantage that has the additional reluctance torque except a magnet torque and because magnet is situated inside the rotor, the mechanical structure is strong. Therefore IPM BLDC motor makes possible to have high speed and high power. This paper presents a design and characteristics analysis of IPM BLDC motor for electric vehicle. To design IPM BLDC motor, surface mounted permanent magnet(SPM) BLDC motor is used as the initial design model. According to the shape-ratio() of permanent magnet, the characteristic of IPM BLDC motor is analyzed by Finite element method (FEM). Characteristics analysis results of the designed motor are compared with the experimental results.

Fault Detection of the BLDC Motor Control Board (BLDC 모터 제어보드 이상상태 검출에 관한 연구)

  • Cho, Sung-O;Cho, Nae-Su;Kwon, Woo-Hyun;Lim, Sung-Woon;Yun, Kyung-Sub
    • Proceedings of the KIEE Conference
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    • pp.66-68
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    • 2005
  • DC motor is easy to control and can make torque easily. DC motor uses wide range. But DCmotor have limited by using a brush and structural complexity. But, BLDC doesn't have brush so that is more simple than DC motor, and the rotor of BLDC motor is made by permanent magnet that dose not need to make a fixed flux speed for flux current. BLDC motor is very efficiency, controllable, and reliable. This paper presents an error detection with a BLDC motor current. Generally, BLDC motor current is used to current feedback, so that can make a critical fault in the system. this paper suggests to detect error by inspection of threshold current value both positive and negative.

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Implementation of the BLDC Motor Speed Control System using VHDL and FPGA (VHDL과 FPGA를 이용한 BLDC Motor의 속도 제어 시스템 구현)

  • Park, Woon Ho;Yang, Oh
    • Journal of the Semiconductor & Display Technology
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    • v.13 no.4
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    • pp.71-76
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    • 2014
  • This paper presents the implementation for the BLDC motor speed control system using VHDL and FPGA. The BLDC motor is widely used in automation for its good robustness and easy controllability. In order to control the speed of the BLDC motor, the PI controller used for static RPM output of the BLDC motor to variations in load. In addition, by using the DA converter, we were able to monitor the BLDC motor reference speed and the current speed through real time. The motor speed command and the parameters of the PI speed controller were modified easily by the FPGA and the AD converter. Finally, in order to show the feasibility of the control algorithm the speed control characteristics of the motor was monitored using an oscilloscope and the DA converter. Further, the speed control system was designed in this paper has shown the applicability of the drive system of the factory automation.

7-Phase BLDC Motor Drive System using MSTC (MSTC를 이용한 7상 BLDC 모터 구동시스템)

  • 전윤석
    • Proceedings of the KIPE Conference
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    • pp.429-433
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    • 2000
  • Recently the demand of motor for industrial household machinery is increasing. As Switching devices and control technology are progressing so the use of BLDC Motor is increasing But 3-Phase BLDC Motor generally used has pulsating torque and speed variation in commutation so the range of it's application is limited high speed application Especially to solve these problems it is necessary to increase phase to Motor so study of Poly-Phase BLDC Motor is progressing. In this paper we designed 7-Phase BLDC Motor drive system and MSTC(Minimum Switching Time Controller)

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Dynamic Characteristics of BLDC Motor for Control Valve (제어밸브를 위한 BLDC 모터의 동특성)

  • Lee, Joong-Youp;Jung, Tae-Kyu;Lee, Soo-Yong
    • Proceedings of the KSME Conference
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    • pp.1138-1142
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    • 2007
  • As a brush DC motor, the brushless DC motor is also operated by DC power supply but has no mechanical contacts occurred by a brush or a commutator. Though the performance of BLDC motor is almost similar with that of DC motor, the BLDC motor has the advantage of the high speed responsibility, the high controllability, and the high effectiveness. The control valve using the BLDC motor, which excludes the burnout effect provoked possibly by the vacuum condition during the flight, is employed for the upper stage of a launch vehicle. For the component level analysis, the dynamic response characteristics of BLDC and DC motors to the same design input sources have been studied in using AMEsim.

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A Study on New Current Controller for 7-Phase BLDC Motor Drive System (7상 BLDC 전동기 구동시스템을 위한 새로운 전류제어기에 관한 연구)

  • Lee, Surk;Jeon, Ywun-Seok;Mok, Hyung-Soo;Kim, Duk-Keun
    • The Transactions of the Korean Institute of Power Electronics
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    • v.6 no.2
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    • pp.191-201
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    • 2001
  • Recently, the demand of motor for industrial, household machinery is increasing. As Switching devices and control technology are progressing, so the use of BLDC Motor is increasing. But 3-Phase BLDC Motor generally used has pulsating torque and speed variation in commutation, so the range of its application is limited to high speed operation. Especially, to solve these problems, it is necessary to increase phase of Motor, so study of Poly-Phase BLDC Motor is progressing. However, when hysteresis current controller is used, switching frequency is highly increasing. In this paper, 7-Phase BLDC Motor drive system is designed. Also MSTC(Minimum Switching Time Controller) is proposed and with simulation and experiment, there validities are verified.

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Modeling and Simulation of Interior Permanent - Magnet BLDC Motor Drive (영구자석 매입형 BLDC 모터 제어기의 모델링 및 시뮬레이션)

  • 이동명;안준호;염관호;조관열;김학원
    • Proceedings of the KIPE Conference
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    • pp.332-336
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    • 1998
  • Recently, the BLDC(Brushless DC) motor has been increasingly applied to home appliance and the study of BLDC motor drive is extensively processing, so it is necessary to investigate the characteristic of the BLDC motor drive. In this paper, we proposed the modeling of interior permanent - magnet BLDC motor drive. The state model of motor and the model of inverter using pulse width modulation are included. The modeling is verified by the experimental results.

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Develop of BLDC Electric Motor for Outboard Motor Drive (선외기 구동을 위한 BLDC 전기모터 개발)

  • Shin, Cheol-Gi;Kim, Jin-Sa
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.26 no.10
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    • pp.766-770
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    • 2013
  • This paper tried to develop a BLDC electric motor securing the 800 W-level watertight structure for driving the outboard motor. For this purpose, this paper developed a high-efficient controller-integrating BLDC electric motor system for underwater propulsion and designed and developed a triple watertight structure. Besides, this study developed a outboard motor integrating motor, propeller and controller based on the production of a controller for BLDC motor which can the speed control by selecting low-voltage, high-current power element. The characteristics of developed outboard motor were 24 V input voltage, over 800 W motor output, and max. 3,000 rpm motor, and 84.9% motor efficiency, and the developed outboard motor could secure the watertight structure in 5 m in water depth.