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This paper presents a bi-directional power flow interior permanent magnet brushless DC (IPM-BLDC) motor drive for electrical scooters. A new control scheme is proposed for the motoring operation. It has high energy conversion efficiency in the low speed and high torque region as well as high speed region. The basic control idea follows the maximum torque per ampere (MTPA) control of an interior permanent...
Power compaction and high efficiency are two key advantages of permanent magnet motors. This paper proposes an enhanced internal permanent magnet motor that delivers high torque, power compaction, and exceptionally high efficiency in the same operation area. The advantage of the proposed scheme is the magnetic flux accumulation in the air gap, which allows much higher values of magnetic flux density,...
In-Wheel System is a high-efficiency system to supply a new concept of platform which raises the efficiency of motor drive system and applies it to an environment-friendly automobile by installing a highly efficient electric motor directly to wheels and removing factors of power train. In addition, this system receives a lot of favorable attention especially from various fields (e.g. electric vehicle,...
As the development of microprocessors, power electronic converters and electric motor drives, electric power steering system which uses an electric motor came to use a few year ago. Electric power steering systems have many advantages over traditional hydraulic power steering systems in engine efficiency, space efficiency, and environmental compatibility. This paper deals with design and optimization...
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