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고토크·비상운전기능을 가진 다상BLDC모터 및 제어기개발
허동렬(Dong-Ryol Hur),황윤길(Yun-Gil Hwang),안기주(Gi-Ju Ahn),박형삼(Hyeong-Sam Park),신동률(Dong-Ryul Shin) 한국정보기술학회 2024 한국정보기술학회논문지 Vol.22 No.3
In this paper, a multi-phase brushless direct current(BLDC) motor is widely used for high efficiency and emergency operation propellants because it operates by distributing the phases of the motor and the controller. In particular, it is used in areas that require high efficiency, safety(Emergency driving), and low noise, such as submarines and electric vehicles. Since the motor winding and controller are made and controlled in multi-phase(n=natural number, 3n), high efficiency is achieved by reducing heat loss, and the concept of emergency operation that operates even when one of the n-phase is finished is designed and implemented in the controller. Reduce torque ripple by minimizing increase in stator winding loss at maximum output torque by multiphase division. The controller implements crime efficiency because it partially controls the excitation, and since phase control is implemented through actual measurement, it does not decrease to the phase loss ratio and is driven by the rest of the phase even after the Korean version is finished, that is, it is excellent in emergency operation is excellent measurement.
실 변수 엘피트주의 유전알고리즘을 이용한 SVC 계통의 안정화 장치의 설계
정형환,허동렬,이정필,왕용필,Chung, Hyeng-Hwan,Hur, Dong-Ryol,Lee, Jeong-Phil,Wang, Yong-Peel 대한전기학회 2001 전기학회논문지A Vol.50 No.7
In this paper, it is suggested that the selection method of parameter of Power System Stabilizer(PSS) with robustness in low frequency oscillation for Static VAR Compensator(SVC) using a Real Variable Elitism Genetic Algorithm(RVEGA). A SVC, one of the Flexible AC Transmission System(FACTS), constructed by a fixed capacitor(FC) and a thyristor controlled reactor(TCR), is designed and implemented to improve the damping of a synchronous generator, as well as controlling the system voltage. The proposed PSS parameters are optimized using RVEGA in order to maintain optimal operation of generator under the various operating conditions. To decrease the computational time, real variable string is adopted. To verify the robustness of the proposed method, we considered the dynamic response of generator speed deviation and generator terminal voltage by applying a power fluctuation and three-phase fault at heavy load, normal load and light load. Thus, we prove the usefulness of proposed method to improve the stability of single machine-infinite bus with SVC system.
정수기 빌트인용 SPM type BLDC 모터 토크제어를 위한 모터설계 및 약계자 제어기 설계에 관한 연구
주동현(Dong-Hyun Ju),허동렬(Dong-Ryol Hur),황윤길(Yun-Gil Hwang),박형삼(Hyeong-Sam Park),신동률(Ryul-Dong Shin) 한국산업기술융합학회(구. 산업기술교육훈련학회) 2023 산업기술연구논문지 (JITR) Vol.28 No.2
정수기 모터의 경우 일정 속도, 동기화 및 높은 토크 모터와 그 제어 및 가정용으로 저소음, 저 전력이 필수적이다. 다만 기존 교류모터는 기동 시 저토크인 단점이 있고, 고토크 모터인 DC 모터는 브러시 교체가 어렵고 소음이 심하며 모터 교체 시 브러쉬 때문에 유지·보수가 어렵다. 본 논문에서는 네오디뮴 자석이라고 불리는 고밀도 에너지 자석을 사용하여 저소음, 고효율인 다상 SPM(Surface Permanent Magnet) BLDC(Brushless DC) 모터를 설계·제어하고, 시동 중에 부피를 줄이고, 저소음 및 에너지 소비를 절감하는 고 효율을 가능하게 하며, 높은 토크를 제어할 수 있었다. 이에 본 논문은 약계자 방식을 이용하여 고속, 고토크 및 에너지 소비를 줄이고 저소음화가 가능한 BLDC 모터의 제어 및 설계를 제시하고자 한다. The system for water purifiers requires a motor with a constant speed, high torque, low noise, and low power. AC motors have low starting torque, and DC motors have difficulty in replacing brushes, generate noise, and are difficult to maintain. This study uses a high-density energy magnet called a neodymium magnet to design and control an SPM brushless DC (BLDC) motor to control high torque. This paper proposes the control and design of BLDC motors using the weak field method.