Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2007-02-06
2009-11-24
Ip, Paul (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S813000, C318S815000
Reexamination Certificate
active
07622887
ABSTRACT:
Power electronics equipment includes air-cored insulating transformers inserted between a control circuit grounded to a vehicle body and an upper arm biased at a high voltage, and air-cored insulating transformers between the control circuit grounded to the vehicle body and the lower arm biased at a high voltage. Each of the air-cored insulating transformers includes a primary winding and a secondary facing to each other. The power electronics equipment facilitates improving resistance against hazardous environments, suppressing the deterioration by aging, reducing the adverse effects of noise caused by external magnetic flux, and transmitting and receiving signals while insulating the low and high voltage sides electrically from each other.
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Fuji Electric Device Technology Co. Ltd.
Ip Paul
Kanesaka Manabu
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