Electricity: motive power systems – Plural – diverse or diversely controlled electric motors
Reexamination Certificate
2008-10-14
2011-10-18
Santana, Eduardo Colon (Department: 2837)
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
C318S112000, C318S801000, C318S053000, C363S071000, C363S056030, C180S065285
Reexamination Certificate
active
08040081
ABSTRACT:
If any short-circuit failure occurs in an inverter, then a motor generator is used to execute a safety driving. If the rotational speed of a motor generator calculated from a detection value of a position sensor exceeds a predetermined reference rotational speed during the safety driving, an MGECU turns on all of the switching elements connected in parallel to a switching element in which a short-circuit failure occurs with respect to a power supply line. If the rotational speed is equal to or less than the reference rotational speed, the MGECU turns on only the switching elements connected in series to the switching element in which the short-circuit failure occurs. In this way, any excessive currents can be prevented from occurring in the inverter without restricting the safety driving.
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Colon Santana Eduardo
Oliff & Berridg,e PLC
Toyota Jidosha & Kabushiki Kaisha
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