• Journal of international Conference on Electrical Machines and Systems
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• 제1권3호
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• pp.354-359
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• 2012

A transformerless converter suitable for multiphase drive application is presented in this paper. The topology employs a cascaded H-bridge rectifier as the interface between the grid and multi inverters which drive the multiphase motor. Compared with the conventional structure, the new topology eliminates the input transformer and also has the advantages such as four quadrant operation, simple configuration, low cost, high efficiency, and so on. The control strategies for the grid-side cascade H-bridge rectifier and the motor-side inverter are studied accordingly. Based on the multi-rotational reference frame, modular control scheme is developed to regulate the multiphase drive system. Simulation results show the proper operation of the proposed topology and the corresponding control strategy.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2005년도 전력전자학술대회 논문집
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• pp.336-339
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• 2005

This paper presents a PM type BLDC(Brushless DC) Motor servo drive system using high performance DSP TMS320F2812. The DSP controller with 150MIPS enables an enhanced real time implementation and increased efficiency and high performance for motor drive. The suggested drive system consists of PI action for the constant speed control and PID action for the current control with only 3 Halls, no encoders. The developed servo drive control system shows a good response speed characteristics at high speed up to 10000 [rpm].

• 대한전기학회:학술대회논문집
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• 대한전기학회 1984년도 하계학술회의논문집
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• pp.267-269
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• 1984

• 한국항만학회지
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• 제11권2호
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• pp.273-280
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• 1997

Recently the importance of the cargo handling equipments in a port has been increasing to get strong competition from other ports. Many ports are making efforts to modernize their cargo handling equipments. The kernel technology of such equipments is the speed control of DC motor which is used as an essential part of them. In this paper, we discuss the speed control of a DC motor as a basic work for building cargo handling equipments in a port. DC Motors are still widely used in industrial fields, as driving power motor for electrical fields. DC drives, being easy to control, are widely used in many variable-speed and position control drive system. Traditional analog control circuits used in such applications have many disadvantages. Complex control schemes are difficult to implement with analog components. All these factor and invention of the microprocessor has made it possible to use digital control circuits, using microprocessing system. These digital circuits have been found to be reliable, flexible, and also immune to noise. In this paper it presents the speed control of a SCR DC motor driver which using dual converter by 80c196kc microprocessor. We developed a thyristor power amplifier which does not cause damage thyristor because it is designed to prevent triggering the two SCRs in the same arm simultaneously. And it was analyzed voltage and currents wave at reactive load.

• 산업기술연구
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• 제22권B호
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• pp.125-132
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• 2002

In this paper, a high performance current control strategy for a Brushless DC Motor is presented. The proposed strategy is based on the ramp comparison PI current control with the predictive voltage compensation. The proposed strategy is compared with the hysteresis current control strategy. The proposed method can improve the current waveforms, and it can reduce the torque ripples. So the proposed strategy is suitable to a high performance current control strategy for a Brushless DC Motor. The simulation and experimental results for a laboratory Brushless DC motor drive system confirm the validity of the proposed strategy.

• 항공우주기술
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• 제4권1호
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• pp.162-170
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• 2005

KSLV-I의 킥모터의 추력벡터제어용 구동장치 시스템은 전기-유압식 서보 구동장치 형상으로 설계되었으며 가동노즐을 구동하는 구동장치, 유압동력을 생성하는 유압동력 생성장치, 유압동력을 구동장치에 전달해 주는 유압동력분배장치와 관성항법장치에서 입력되는 제어신호에 따라 구동장치를 제어하는 제어장치 등으로 구성되어있다. 그중에서 유압동력을 생성하는 장치는 전기모터를 이용하여 유압펌프를 구동하는 EMDP(Electric Motor Driven Pump) 방식을 채택하고 있다. 일반적으로 전기모터는 구동이 편리한 브러시 방식의 직류모터(BDC 모터)를 사용하는데 일정 고도이상에서는 사용이 용이하지 않다. 그래서 고고도에서 사용하기 위해 브러시없는 직류모터(BLDC 모터)를 이용하여 유압펌프를 구동하는 시스템을 개발하고 있다. 본 논문에서는 브러시없는 직류모터를 구동하기 위한 제어기 설계에 대하여 자세히 설명하고자 한다.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2014년도 전력전자학술대회 논문집
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• pp.108-109
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• 2014

본 논문에서는 배터리, 양방향 DC-DC 컨버터, 그리고 브러시레스 직류 전동기로 구성되는 마이크로 터빈 구동 시스템의 제어 방식에 대해 소개한다. 브러시레스 직류 전동기 구동용 인버터의 직류링크 전압이 가변되기 때문에 기존의 소신호 모델 기반으로는 양방향 DC-DC 컨버터의 과도 응답 제어 성능이 저하되는 문제점이 있다. 본 논문에서는 평균 모델을 이용하여 양방향 DC-DC 컨버터를 제어함으로써 과도 응답 제어 성능을 개선하였고, PAM 방식 제어를 이용하여 브러시레스 직류 전동기의 고속 센서리스 운전을 구현하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1992년도 하계학술대회 논문집 B
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• pp.1228-1230
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• 1992

The permanent magnet synchronous motor(PMSM) is receiving Increased attention for servo drive applications in recent years because of its high torque to inertia ratio, superior power density and high efficiency. By vector-controll method, PMSM has the same operating characterics as seperately excited dc motor. The drive system of servo motor is requested to have an accurate response for the reference input and a quick recovery for the disturbance such as load torque. However, when the unknown disturbances and parameter variations are imposed on the permanent magnet synchronous motor(PMSM), the drive system is significantly effected by them. As a result, the drive system with both a fast compensation and a robustness to a parameter variations is requested. This paper investigates the possibility of applying the fuzzy logic controller(FLC) using Multi-Rule Base In a servo motor control system. In this paper, The five Rule Bases(1 to 5) are selected to recover the state error caused by the disturbance in steady state. In the initial operating mode. Rule Base 0 is used. To show the validity of the proposed fuzzy logic controll system, the computer simulation results are provided.

• 한국인터넷방송통신학회논문지
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• 제23권5호
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• pp.139-144
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• 2023

토크, 효율 등 전동기의 최대특성을 얻기 위해 모든 전동기는 각 전동기 특성에 맞게 설계된 범용인버터를 기본적으로 사용한다. 그러나 최근 연구 결과들을 살펴보면 BLDC 범용인버터인 6-스위치 인버터를 이용한 SRM 구동 연구, 3상 BLDC 전동기를 4-스위치 인버터를 이용한 구동 연구사례들을 살펴볼 수 있다. 따라서 기존 범용인버터에서 벗어나 각 전동기를 구동할 시킬 수 있는 구동 및 제어에 대한 여러 방법에 대해 접근하여 연구 방법들을 모색할 수 있다. 이러한 연구 경향에 맞춰 본 논문에서는 SRM 구동용 컨버터인 C- dump 형태의 컨버터를 BLDC 전동기의 구동 드라이버로 적용하여 이에 대한 특성과 가능성에 관해 연구하였다.

• Journal of Advanced Marine Engineering and Technology
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• 제31권8호
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• pp.975-982
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• 2007

The single-phase switched reluctance motor(SRM) drive requires DC source which is generally supplied through a rectifier connected with a commercial source. The rectifier is consist of a diode full bridge and a filter circuit. Usually the filter circuit uses capacitor with large value capacitance to reduce ripple component of DC power. Although the peak torque ripple of SRM is small, the short charge and discharge current of the filter capacitor draws the low power factor and system efficiency. A modified single phase SRM drive system is presented in this paper, which includes drive circuit realizing reduction of torque ripple and improvement of power factor. In the proposed drive circuit, one switching part and diode which can separate the output of AC/DC rectifier from the filter capacitor is added. Also, a upper switch of drive circuit is exchanged a diode in order to reduce power switching device. Therefore the number of power switch device is not changed, two diodes are only added in the SRM drive. To verify the proposed system, some simulation and experimental results are presented.