Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Slipping and/or racing control for electric motors
Patent
1980-02-29
1982-04-27
Rubinson, Gene Z.
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
Slipping and/or racing control for electric motors
318806, 318808, H02P 546
Patent
active
043273130
ABSTRACT:
A control apparatus is disclosed for an electric car having an induction motor supplied with polyphase AC power of variable frequency from a power converter so as to drive a driving wheel. This control apparatus comprises a detector for detecting the actual running speed of the electric car irrespective of whether the driving wheel causes adhesion or non-adhesion, a device for establishing a slip frequency of the induction motor, and a device for generating a frequency command based upon a signal of the actual running speed and the slip frequency, this frequency command being used to control the output frequency of the power converter.
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patent: 3916275 (1975-10-01), Plunkett
patent: 4044285 (1977-08-01), Plunkett et al.
patent: 4066938 (1978-01-01), Turnbull
patent: 4075538 (1978-02-01), Plunkett
patent: 4095147 (1978-06-01), Mountz
patent: 4136303 (1979-01-01), Almquist et al.
Ibamoto Masahiko
Kozu Eiji
Narita Hiroshi
Okamatsu Shigetoshi
Tsuboi Takashi
Hitachi , Ltd.
Rubinson Gene Z.
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