著者
坂井 俊文 國廣 直希 大塚 邦晃 篠宮 健志
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.7, pp.552-560, 2021-07-01 (Released:2021-07-01)
参考文献数
24

This study presents a magnetic polarity detection method of an initial rotor position estimation for permanent magnet synchronous motor drives without a position sensor. The magnetic polarity detection method utilizes stator core magnetic saturation caused by the rotor magnet and uses current responses when a high frequency or impulse voltage is applied to the motor. Recently, capacity enlargement, miniaturization, and cost reduction of the motor have been steadily progressing and motors with complicated magnetic saturation characteristics are available. The authors have developed a new magnetic polarity detection method for initial rotor position estimation that is suitable for many motors having common or complicated magnetic saturation characteristics. In the proposed method, high-frequency voltage waves with different amplitudes are applied to the motor. The proposed method measures the motor current ripple components and can estimate the magnetic polarity by using the amount of d-axis inductance variation caused by magnetic saturation. The basic idea, computer simulation, and experimental results are discussed in this paper.
著者
浅野 有康 大野 佳樹 栗田 壮一郎 近藤 圭一郎 篠宮 健志 石川 勝美
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
巻号頁・発行日
vol.137, no.5, pp.369-376, 2017
被引用文献数
5

<p>Hybrid power source three level inverter is proposed as a main circuit system with energy storage device for increasing regenerative power. This paper proposes a charge and discharge control method to utilize the regenerated energy. The proposed method is verified by experimental tests with a scaled-down model and numerical simulation.</p>