[특허]Method and apparatus for driving and controlling synchronous motor using permanent magnets as its field system

Method and apparatus for driving and controlling synchronous motor using permanent magnets as its field system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02P-001/46
출원번호	US-0288031 (1994-08-10)
우선권정보	JP-0198100 (1993-08-10); JP-0254152 (1993-10-12); JP-0030544 (1994-02-28)
발명자 / 주소	Kusaka Yasushi (Susono JPX) Yamada Eiji (Owariasahi JPX) Kawabata Yasutomo (Aichi-gun JPX)
출원인 / 주소	Toyota Jidosha Kabushiki Kaisha (Toyota JPX 03)
인용정보	피인용 횟수 : 30 인용 특허 : 0

초록 ▼

A method and an apparatus for driving and controlling a synchronous motor using permanent magnets as its field system are herein disclosed. When a rotational speed of the synchronous motor using the permanent magnets as the field system is more than a base rotational speed, a current condition computing section computes a field weakening reference current in accordance with a battery voltage, a reference torque and a rotational speed. An inverter performs the field weakening control of the the synchronous motor using the permanent magnets as the field system in accordance with the field weakening reference current sent from the current condition computing section to prevent the deterioration of efficiency and the deficiency of output due to the excessive or insufficient field weakening current. The current condition computing section determines optimum reference current by the use of a converged battery voltage, when the battery voltage is converged to a constant value after initial control.

대표청구항 ▼

A driving and controlling apparatus for use in a drive unit having a synchronous motor using permanent magnets as its field system which can be excited by a field flux generated by the permanent magnets and a field flux generated by a field current component of a primary current; a battery as a source of power; and power conversion means for converting a discharged power of the battery into alternating current, and then feeding the alternating current as the primary current to the synchronous motor; said apparatus comprising: current control means for controlling the primary current of the synchronous motor in accordance with a reference current; and current condition determination means for determining the reference current in accordance with a voltage of the battery so that the reference current is minimized under predetermined conditions and at least partially cancelling the field flux generated by the permanent magnets with the field flux generated by the field current component so that a counter electromotive force of the synchronous motor does not exceed the voltage of the battery and so that the field flux generated by the field current component has an magnitude corresponding to the voltage of the battery.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Method and apparatus for driving and controlling synchronous motor using permanent magnets as its field system 원문보기

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Method and apparatus for driving and controlling synchronous motor using permanent magnets as its field system 원문보기

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