Method for maintaining a direct voltage at the input of a...

Details Method for maintaining a direct voltage at the input of a... Method for maintaining a direct voltage at the input of a...

2006-11-21

2008-10-14

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Automatic and/or with time-delay means

Electrical conditions in circuit other than controlled motor...

C318S376000, C318S812000

Reexamination Certificate

active

07436142

ABSTRACT:
This method maintains a direct voltage at the input of a DC/AC voltage converter in order to maintain an asynchronous motor in a magnetised state, the input of the converter being connected to a DC supply bus of an electric vehicle, and comprises, in a free wheel mode during which the vehicle coasts and the bus is disconnected from a catenary:a) a step (76) for magnetising the motor, thenb) a step (78) for operating the motor as a generator of alternating voltage, thenc) a step (72) for stopping the converter when the direct voltage of the bus reaches an upper threshold, thend) a step (74) for maintaining the converter in the idle state as long as the direct voltage of the bus remains higher than a minimum direct magnetisation voltage of the asynchronous motor.

REFERENCES:
patent: 4087734 (1978-05-01), Blutreich
patent: 4454455 (1984-06-01), Matulevich
patent: 5614796 (1997-03-01), Minderlein et al.
patent: 7304445 (2007-12-01), Donnelly
patent: 2004/0238243 (2004-12-01), King et al.
patent: 2005/0225918 (2005-10-01), Fuchs
patent: 57009270 (1982-01-01), None
patent: 61098187 (1986-05-01), None
patent: 62071404 (1987-04-01), None

Affiliated with

Also associated with

Rating

Method for maintaining a direct voltage at the input of a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for maintaining a direct voltage at the input of a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for maintaining a direct voltage at the input of a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4002740