Drive device of electric motor

Electricity: motive power systems – Induction motor systems – Primary circuit control

Reexamination Certificate

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Details

C318S716000, C318S139000

Reexamination Certificate

active

08044633

ABSTRACT:
An electric motor has a field pole formed by a field current passing through a field winding. A voltage booting converter converts output voltage of a battery and outputs the voltage between a power source line and a grounding line. Field winding is electrically connected onto an electric current channel between battery and power source line and formed so that voltage switched by a switching element is applied to both ends. A controller controls the field current so as to adjust density of magnetic flux between a rotor and a stator by performing switching control on switching element and a switching element connected in parallel to field winding and converts the output voltage of battery into voltage in accordance with a voltage command value.

REFERENCES:
patent: 2010/0301788 (2010-12-01), Chen et al.
patent: 05-260796 (1993-10-01), None
patent: 05-304752 (1993-11-01), None
patent: 08-079912 (1996-03-01), None
patent: 08-223706 (1996-08-01), None
patent: 2004-229461 (2004-08-01), None
patent: 2005-143157 (2005-06-01), None

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