Electricity: motive power systems – Battery-fed motor systems
Patent
1987-05-21
1988-09-20
Ro, Bentsu
Electricity: motive power systems
Battery-fed motor systems
318345B, 318392, H02P 728
Patent
active
047728299
ABSTRACT:
An apparatus for controlling the supply of power to an electric drive motor normally controls the duty cycle of a power switching element to produce a variety of vehicle speeds. The apparatus typically controls the rate of change of the duty cycle to provide smooth vehicle operation. During periods of extended high speed, high load operation the apparatus bypasses the power switching element and connects the vehicle battery directly to the drive motor via a contactor. Under normal operating conditions the bypass contactor is energized after a relatively short preselected delay; however, where the vehicle is heavily loaded, such that current limiting of the power switching element exists, the apparatus interactively delays energization of the bypass contactor to allow the vehicle sufficient time to accelerate to a higher speed. Such a control system advantageously reduces drive line shock and jerky operation of the vehicle, as well as, excessive sparking at the contactor.
REFERENCES:
patent: 3213343 (1965-10-01), Sheheen
patent: 3349309 (1967-10-01), Dannettell
patent: 3710216 (1973-01-01), Smith
patent: 4057752 (1977-11-01), Artrip et al.
patent: 4069445 (1978-01-01), Klimo
patent: 4081725 (1978-03-01), Schmidt et al.
patent: 4508999 (1985-04-01), Melocik et al.
Pickering William
Wiblin Wayne T.
Caterpillar Industrial Inc.
Morgan Terry D.
Ro Bentsu
LandOfFree
Apparatus for interactively accelerating an electric drive vehic does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for interactively accelerating an electric drive vehic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for interactively accelerating an electric drive vehic will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1750432