Showing papers by "Mamiko Inamori published in 2015"
01 Oct 2015
TL;DR: A method to drive a three phase induction motor with a two phase inverter using field oriented control (FOC) because it can produce full torque at zero speed and is capable of quick response is proposed.
Abstract: This paper proposes a method to drive a three phase induction motor with a two phase inverter using field oriented control (FOC). FOC is suitable because it can produce full torque at zero speed and is capable of quick response. This strategy is also applicable during inverter failure. In this paper, design strategy and some results of an FOC controlled two phase inverter will be presented.
6 citations
01 Oct 2015
TL;DR: In this paper, a method to increase the current capacity of an inductor by designing the gap of the inductor is described, where the number of gaps and the position of gap affect magnetic characteristics of inductor.
Abstract: This paper describes the method to increase the current capacity of an inductor. An inductor is a simple component. In the theory, the magnetic characteristic of the inductor is determined only by the length of the air gap. However, the number of gaps and the position of gap affect magnetic characteristics of the inductor. This paper describes a method to increase the current capacity by designing the gap of the inductor.
1 citations
TL;DR: In this article, the frequency response of a channel for the data transmission changes owing to load fluctuation and the distance between antennas at the transmitter side, and the authors investigated data transmission performance in the wireless power transfer system with frequency response estimation.
Abstract: In recent years, wireless power transfer has been attracting a great deal of attention. In order to realize efficient power transfer, it is necessary to communicate data such as a frequency, required power, or error tolerance. In the proposed system, because of the use of the same antennas for power transmission and data transmission, the frequency response of a channel for the data transmission changes owing to load fluctuation and the distance between antennas. This paper investigates data transmission performance in the wireless power transfer system with frequency response estimation at the transmitter side. The numerical results obtained through computer simulation show that the proposed scheme can estimate the frequency response of the channel and the difference between the expected bit error rate (BER) and the BER with the estimation error is less than 0.5 dB at the BER of 10−3.