著者

前川 佐理

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌D(産業応用部門誌) (ISSN:09136339)

巻号頁・発行日

vol.143, no.8, pp.NL8_11, 2023-08-01 (Released:2023-08-01)

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Our research focuses on power electronics and motor control. In this document we present our research topics.

著者

前川 佐理

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.30, no.1, pp.27-32, 2022 (Released:2022-04-20)

参考文献数

15

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Permanent magnet synchronous motors (PMSMs) have been applied to various fields because of their various merits such as high power and torque per size and high efficiency. This paper describes the drive system for driving the PMSM from the view of current control, position sensorless control, and other technologies, and introduces recent technological trends.

著者

前川 佐理 田中 亜実

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌D(産業応用部門誌) (ISSN:09136339)

巻号頁・発行日

vol.141, no.10, pp.749-762, 2021-10-01 (Released:2021-10-01)

参考文献数

39

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In recent years, there has been an increasing demand for position sensorless control in PMSM drives, and various methods have been studied. Switching noise is a problem in the low-speed sensorless control method that uses the current slope during PWM. Furthermore, another problem is that the inductance does not appear in a sinusoidal distribution owing to magnetic saturation.In this paper, we improve the sensorless control method that estimates the position from the current slope during PWM, which is greatly affected by switching. Additionally, we build a multi-layer neural network (NN) that directly estimates the position signals by learning a large amount of current data, and verify the driving results in the low-speed range when the learned NN is incorporated into real-time control.