Title:
モータの熱的状態をモデル化する電子装置
Document Type and Number:
Japanese Patent JP4104755
Kind Code:
B2
Abstract:
Each supply phase (u, v, w) is provided with a current sensor (Cu, etc.) whose output is applied to a standardizing interface (C1) as a voltage proportional to the phase current. The interface produces output currents (Inu, etc.), proportional to the ratio of the phase currents (Im) to a reference current (Ir), which are passed by current mirror to a summation unit (C2) producing a DC output voltage (Vr) proportional to the sum of the standardized currents. A calculating unit (C3) processes this signal and the resultant chopped current, an image of the summated standardized currents, is passed to the modeling circuit (C4). The capacitor in this is prevented from discharging into the calculating unit by a diode, and the modeling unit controls the motor switchgear (C5).
Inventors:
Alan, Goose
Philippe
Philippe
Application Number:
JP36344798A
Publication Date:
June 18, 2008
Filing Date:
December 21, 1998
Export Citation:
Assignee:
SCHNEIDER ELECTRIC INDUSTRIES SAS
International Classes:
G01R31/34; H02P29/02; H02H6/00; H02P3/02
Domestic Patent References:
| JP49026723A |
Attorney, Agent or Firm:
Kazuo Sato
Asahi Maejima
Masami Tamama
Masahiko Hinataji
Asahi Maejima
Masami Tamama
Masahiko Hinataji