마이크로프로세서를 이용한 서보모터의 정밀위치제어

김춘삼 三陟大學校 産業科學技術硏究所 2000 産業科學技術硏究論文集 Vol.5 No.-

In this paper, It is study about control of digital PWM inverter using AC motor. Main controllers are 80C196MC and 80C196KC Intel. Almost software is used in the paper because adjustment and development are easy.

모델링오차와 측정잡음을 고려한 유도전동기의 강인한 속도제어

金春杉 三陟大學校 1996 論文集 Vol.29 No.1

It is difficult to control industrial drive systems because of load disturbance, parameter variation and measurement noise. So a theorem is required to have robustness for the measurement noise and disturbance. This paper is among the researches of solving these problem. Sliding mode state observer is robust for measurement noise, modeling-error and load disturbance. The pole of sliding mode state observer can be placed at (0,0) in Z-plane for fast response. This method is, namely, deadbeat control. sliding mode state observer output is discontinuous on a switching hyperplance, that causes harmful effects such as current harmonics and speed oscillation. In paper, also the reducing method of the chattering of sliding mode state observer output is proposed. In this paper, the method of designing a robust sliding mode state observer taking ac of the ability of disturbance and noise attenuation is proposed. Also, the proposed control is digitally implemented with TMS320C31.

NPC 인버터에 의한 유도전동기 구동시스템의 새로운 히스테리시스 전류 제어기법

김춘삼,이병송 한국조명전기설비학회 1999 조명·전기설비학회논문지 Vol.13 No.1

본 논문은 NPC 인버터의 구조를 위한 유도전동기 구동 시스템의 새로운 히스테리시스 전휴 제어기법을 제안하였다. 이러한 NPC 구조를 가지는 히스테리시스 전류제어 인버터의 구조는 각상의 인버터 출력전압을 제어하는 주 스위칭 소자와 주 스위치 OFF시에 출력전압을 0전위로 유지시키기 위한 보조 스위칭 소자로 구성된다. 이와 같이 제안된 HNPC (Hysteresis current controlled Neutral Point Clamped) 스위칭 기법은 1차, 2차 전류밴드를 가지며, 전압스위칭 신호는 1차 밴드와 실제전류의 비교 결과로서 발생하고, 2차 밴드와 실제전류의 비교 결과는 전압 스위칭 신호의 상위와 하위를 스위치의 동작을 결정하는 신호로서 동작한다. 이러한 스위칭의 결과로서 제안된 인버터 시스템의 출력 파형은 기존의 전류제어 방식과 비교하여 적은 고조파 성분의 함유특성을 가지고, 동일한 전류밴드 범위에서 낮은 스위칭 주파수를 가진다. 본 연구에서는 제안된 기법을 유도 전동기 구동 시스템에 적용하므로 이들 특성을 시뮬레이션을 통하여 고찰하였다. A new current controlled PWM t'||'&'||'pound;rlmique with NPC(Neutral Point Qarll)ed) structure is IrOIX>Sed in this paper. A current controlled PWM technique with neutral-JXlint-cIamped pulse-width modulation inverter composed of main switching devices which operates as switch for PWM and auxiliary switching devices to clamp the output terminal potential to the neutral point potential is described. The proposed current controller has a first and second current band The switching pattern will be made by the first current band. According to the second current band, the output state of the switching pattern is changed into positivee and negative state. This inverter output contains less hanronic content and lower switching frequency than that of conventional current controlled PWM technique at the same current limit. Thbe induction machine drive with proposed technique is investigated by commputer simulation.

엘리베이터의 精密位置制御를 위한 誘導電動機 驅動方法

金春杉 三陟大學校 1995 論文集 Vol.28 No.1

This paper described the high performance position control for elevator using induction motor and driver. In this paper, the suitable motor specifications for elevator drive are briefly discussed and high accuracy position control for both kinds of control method is analyzed considering the parameter variation in the primary and secondary resistances. Since the pre-identified values of the motor constants are used to determine the control inputs, the performance degradation is caused by the parameter variation such as in the motor resistance. particularly, the value of secondary resistance is considered significant because the control gain to determin the slip frequency heavily dependent on that. The new method proposed uses on special small input signal for the parameter indentification and is expected to have the high accuracy position.

울트라커패시터를 이용한 UPS의 순시전압보상에 관한 연구

김춘삼,김지헌,김수홍,성원기,Kim, Choon-Sam,Kim, Ji-Heon,Kim, Soo-Hong,Sung, Won-Ki 한국조명전기설비학회 2006 조명·전기설비학회논문지 Vol.20 No.5

본 논문은 순간전압강하 보상을 위해 축전지와 울트라커패시터가 병렬로 연결된 무정전 전원장치 시스템을 제안하였다. 축전지와 병렬로 연결된 울트라커패시터는 정전시 순간전압강하를 보상하고, 출력전압의 전압 변동률을 감소시키는 역할을 한다. 무정전 전원장치에서 울트라커패시터의 빠른 순간전압보상 구현을 위해 3[kVA]의 시스템을 제작하여 실험을 수행하였다. 실험결과를 통하여 울트라커패시터의 빠른 보상특성과 울트라커패시터를 사용함으로써 출력전압의 변동률이 5[%]이내를 만족함을 확인하였다. This paper proposed UPS system parallel connected in battery and ultracapacitor to compensate instantaneous voltage drop. Ultracapacitor parallel connected with battery compensate instantaneous voltage drop at failure and it's reduced the voltage regulation of output voltage. We are produced for fast instantaneous voltage drop compensation of ultracapacitor at UPS system and experiments are achieved. Experimental result was verified that the ultracapacitor indicated the fast compensation characteristics and regulation of the output voltage satisfied within 5[%] by using ultracapacitor.

최소자승법을 이용한 Switched Reluctance Motor의 최대 평균토오크 제어

김춘삼,정연석 한국조명전기설비학회 2002 조명·전기설비학회논문지 Vol.16 No.5

SRM 토크는 인덕턴스 프로파일과 전류에 의해 발생한다. 발생한 SRM 토크는 전류제어시 turn-off 각을 제어함으로써 최대화 할 수 있고, 본 논문에서는 최소자승법을 이용하여 구한 함수를 통해 Turn-off 각을 제어할 수 있는 방안을 제안하였다. 시뮬레이션은 3상 6/4극 SRM을 대상으로 하였고, 제안한 방법에 의해 최대 평균토크가 됨을 시뮬레이션을 통해 증명하였다. RM(Switched Reluctance Motor)'s Torque is generated by phase-current and inductance profile. A new analytical concept is proposed to determine the turn-off angle for maximization of the torque output. This paper describes a new method to maximization the average torque of a current control Switched Reluctance Motor. It is based on the simplified turn-off angle equation using least square method. Simulations carried out on a three-phase 6/4 pole SRM justify the algorithm is described. The suggested maximization average torque is verified by simulation in this paper.

2008 전력전자학술대회를 개최하면서

김춘삼 전력전자학회 2008 전력전자학회지 Vol.13 No.4

상태 관측기를 이용한 유도전동기의 정밀 속도제어

金春杉 三陟大學校 1998 論文集 Vol.31 No.1

This paper is discussed induction motor accuracy drive using state observer. optimal PI control are applied to servo system. But the measurement noise, modeling-error and disturbance of servo are not compensated efficiently. So a theorem is required to have robustness for the measurement noise and disturbance. This paper is among the researches of solving these problem. In this paper, proposed is the method of designing a state observer taking account of the ability of disturbance and noise attenuation. state observer is confirmed by computer simulation and experiments. The control system is digitally implemented with DSP.

리럭턴스 토오크를 이용한 영구자석 전동기의 약계자 제어기법

金春杉 三陟大學校 1998 論文集 Vol.31 No.1

In this paper describes the current controlled PWM technique of IPM synchronous motors for a variety of speed control applications. The IPM synchronous motors have saliency, in which the q-axis inductance is larger than the d-axis inductance. As a consequence, there exists a reluctance torque component. Thus when this component is added to the torque component producted by the stator currents and the air-gap flux density, IPM motor drives are readily applicable where full torque is required up to full to base speed. This paper reviews the operation of the IPMSM drives when they are constrained to be within the permissible envelope of maximum inverter voltage and current to produce the rated power and to provide this with the highest attainable rotor speed. Simulation results and experimental results are given and discussed.

‘교수중창단 한울림’ 단상

김춘삼(金春杉) 전력전자학회 2013 전력전자학회지 Vol.18 No.2