Highly Effective Brushless DC Motor in Which Unidirectional Current Flows in
Highly Effective Brushless DC Motor in Which Unidirectional Current Flows in作者机构：Department of Electrical and Electronic Engineering Ritsumeikan University Shiga Prefecture 525-8577 Japan
出 版 物：《Journal of Energy and Power Engineering》 (能源与动力工程（美国大卫英文）)
年 卷 期：2010年第4卷第10期
页 面：58-64页
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 081701[工学-化学工程]
主 题：Brushless DC motor Minato motor repulsive force unidirectional current back-EMF.
摘 要：Authors developed a highly effective brushless DC motor with a simple operation principle. If the operation principle of the motor is simple, a drive circuit will also become simple and its production cost will be lower. From the above fact, Minato motor was noticed. In this motor, a unidirectional current flows in the electromagnets. In other words, unidirectional windings are used. In this motor, only strong repulsive force is utilized when a permanent magnet of a rotor and an electromagnet of a stator are adjacent. Hence, torque constant becomes higher and the efficiency of the motor is high. However, an effective value of the electromagnetic current increases because a large current flows in a short period. Therefore, copper loss increases and the efficiency of the motor decreases. In order to solve above defects, a new motor is proposed. From the experiment, it is clarified that the efficiency of the proposed motor is higher than that of the commercial motors.
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