• 대한전기학회:학술대회논문집
• /
• 대한전기학회 1992년도 하계학술대회 논문집 B
• /
• pp.1185-1187
• /
• 1992

In this paper, PWM control is applied to the microprcessor-based adjustable speed dc motor drives. The motor drive system is composed of phase locked loop. Main drive circuit of the system is consisted of H-type bridge with switching transistors. PWM drive circuit is linearized by adding flywheeling diodes. And also. We study the optimum PWM data and period time so that it hase a nearly liner relationship between current and torque.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2000년도 하계학술대회 논문집 B
• /
• pp.732-734
• /
• 2000

An 1.2[kw] SRM for a pallet truck drive is developed and tested. The drive system has to operate with low voltage and high current. and has to have the characteristics of DC series motor. The small size, ruggedness, high efficiency make it possible to replace with DC motor. Test results show that pallet truck with SRM has better characteristics than that of the DC motor performance.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 1996년도 한국자동제어학술회의논문집(국내학술편); 포항공과대학교, 포항; 24-26 Oct. 1996
• /
• pp.347-350
• /
• 1996

With only the classical PID controller applied to control of a DC motor, a good (target) performance characteristic of the controller can be obtained, if all the model parameters of DC motor and operating conditions such as external load torque, disturbance, etc. are exactly known. However, in case when some of system parameters or operating conditions are uncertain or unknown, the fixed PID controller does not guarantee the good performance which is assumed with precisely known system parameters and operating conditions. In view of this and robustness enhancement of DC motor control system, we propose a PID learning controller which consists of a set of learning rules for PID gain tuning and learning of an auxiliary input. The proposed PID learning controller is shown to drive the state of uncertain DC motor system with unknown system parameters and external load torque to the desired one globally asymptotically. Computer simulation results are given to demonstrate the effectiveness of the proposed PID learning controller, thereby showing whose superiority to the conventional fixed PID controller.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 2000년도 제15차 학술회의논문집
• /
• pp.466-466
• /
• 2000

This paper presents the sinusoidal current ministep technique to drive stepping motor. The stepping motor is coupling to the increment encoder to detect the position and speed of the stepping motor. The data from the encoder is decoded to sine and cosine signal and fed to the driver system. The driver system has two loops control, the inner loop and the outer loop. The inner loop is used to control the rotating of the stepping motor and the outer is used to control the speed of the motor. The rotating of the stepping motor is controlled with the sinusoidal signal. The test results of the inner loop control can control the revolution of the stepping motor is smooth and continuously with similar to the DC motor. The outer loop uses to control the speed of the stepping motor with control the DC voltages apply to the driver. The DC voltages that apply to the driver is controlled by the AC-DC converter The test results of the outer loop control, it can control the speed of motor which is provide the any load in the design.

• 전기학회논문지
• /
• 제61권11호
• /
• pp.1634-1640
• /
• 2012

This paper develops the high-efficiency drive system of the small-size electric vehicles (EVs) driven by the brushed dc motors. A power circuit for driving the dc motor is designed with the H-bridge circuit and buck converter by considering both the efficiency and cost. In order to change smoothly the rotating direction of dc motor driven by the proposed power circuit, an operating sequence for both the field current and the armature voltage according to an accelerator pedal angle is suggested. Through the simulation studies and experimental results with the low-cost 8-bit AVR, the performances of the proposed methods are verified.

• Journal of Advanced Marine Engineering and Technology
• /
• 제8권1호
• /
• pp.64-71
• /
• 1984

In this paper, the fundemental equation on the Trans-vector control of 3.phi. Induction motor drive and the new equivalent circuit to be adapted for this equation, have been obtained, and control drives system to be coincide with this equation is made. Therefore, it has been obtained that control scheme can always be used motor drive. 3.phi. Induction motor drive has been got the dynamic behavior the same as that of DC motor drive. The drive dynamic response is very rapid because of Trans-vector control on the I_1$ (primary current) and .${\omega}_1$ (frequency of primary current) of the Induation mechine. This paper indicates that a practicality of the drive control system and the rationalty of the theory have been identified with the experimental results. The effect of parameter variations on the drive dynamic response can be evaluated from these results.

• 전기학회논문지
• /
• 제58권11호
• /
• pp.2162-2167
• /
• 2009

A Low cost and variable speed brushless motor drive system with single switch per phase is presented. The motor drive is realized with a novel two-phase flux-reversal-free switched reluctance motor and a split AC two switch converter. The strategy of the controller and the converter for its realization are described. Comparisons between a split AC converter, asymmetric converter, split DC converter, single controllable switch converter, and N+1 converter are performed for its device rating, cost, switching losses and conduction losses, and converter efficiency. The split AC converter is analyzed and simulated to verify the characteristics of the converter circuitry and control feasibility and the simulation results are presented. The efficiency with various loads is numerically estimated and experimentally compared from viewpoint of subsystem and system in details. The focus of this paper is to compare the presented motor drive system to the asymmetric converter system throughout experiments and demonstrate single switch per phase converter having comparable efficiency as the asymmetric converter system.

• 전력전자학회논문지
• /
• 제14권2호
• /
• pp.105-111
• /
• 2009

현재 생활의 이기인 자동차 등에서 구동되는 기기의 전원은 배터리 전원을 주로 사용하고 있으며, 또한 산업체에 사용되는 인버터를 사용하는 기기에서도 DC 전원 사용이 확대되고 있다. 이와 같이 DC 전원이 사용되는 곳에서 전력선을 활용한 데이터 통신방식에 대한 수요가 급증할 것으로 사료된다. 본 논문에서는 DC 전원을 기반으로 하는 DC 전력선 통신을 이용하여 BLDC(Brushless DC) 전동기 구동시스템을 제안한다. 이 시스템의 특징은 인출되는 DC 전원으로 사용되는 2 선만으로 구성하여 데이터 통신을 할 수 있는 장점이 있다. 외부 설정치와 지령치로 사용되는 신호선을 제거하고 전력선과 엔코더 신호선의 단축으로 신뢰성 확보되며, 또한 멀티 제어 시 배선수의 최소화 및 회전기기 장착 시 슬립링 수를 최소화 할 수 있다. 위험한 환경에서도 안정성이 증가되며, 시스템 제작단가를 저감할 수 있다. 마지막으로 제안된 방식에 대한 우수성을 검증하기 위해서 PSIM 및 MATLAB를 활용하여 시뮬레이션을 실시하였고, 실제 프로토타입을 제작하여 실험을 통하여 그 타당성을 검증하였다.

• 전력전자학회논문지
• /
• 제22권3호
• /
• pp.193-198
• /
• 2017

This paper discusses the design and control of a switched reluctance motor (SRM) drive system for a built-in car vacuum cleaner. The growing popularity of outdoor activities and recreation has led the automobile industry to expand technologies that increase the convenience of vehicles, and thus, a built-in car vacuum cleaner was introduced. However, the existing DC motor of a vacuum cleaning system has several disadvantages, such as maintenance cost and lifespan issues of its commutator-brush structure. An SRM can be a good alternative to the existing DC motor because of its high-speed capability, long lifespan, low maintenance cost, and high efficiency, among other advantages. A prototype SRM drive is designed and manufactured to verify its feasibility for use in a built-in car vacuum cleaning system. Dynamic simulation is conducted to determine the optimal switching angle for maximum efficiency and minimum torque ripple. Load test, noise measurement, and suction-power tests are also carried out.

• 전자공학회논문지
• /
• 제51권11호
• /
• pp.211-220
• /
• 2014

본 논문에서는 하나의 FPGA 내에 DC 모터 제어와 TFT LCD 인터페이스가 내장되어, 제어와 결과 데이터의 실시간 분석이 용이하고 컴팩트한 전(full)-FPGA 기반 모터 제어 시스템을 보인다. PID 속도 제어 모듈과 TFT LCD 상에 실험 결과를 실시간 보여주기 위한 모니터링 모듈을 하나의 FPGA내에 설계하고, 시뮬레이션과 실험을 통하여 유용성을 보인다. FPGA로는 xc3s400를 사용하였고, AD (Aaltium Designer)를 이용하여 전체 시스템을 설계하였다. DC 모터 4상한 운전을 위해 MOSFET를 이용한 PWM 모터 드라이버를 제작하였다.