Electricity: motive power systems – Battery-fed motor systems
Patent
1984-12-12
1987-03-17
Shoop, Jr., William M.
Electricity: motive power systems
Battery-fed motor systems
318 5, 318722, 318161, 310 67R, 310156, 180 655, 180 658, H02P 500, B60K 100
Patent
active
046510664
ABSTRACT:
A drivetrain (48) for an electric passenger vehicle (10) includes a battery (40) for energizing a single-phase A.C. traction motor (18) which drives a ground engaging wheel (12) through a multi-speed transaxle (20). The motor is characterized by an external ferrite permanent magnet rotor (26) drivingly engaging an input shaft (32) of the transaxle. The motor is controlled by an inverter circuit (44) and a control circuit (46) which generates switch command signals to reciprocally actuate power transistors (56 and 62) within the inverter circuit as a function of operator demand, rotor position and rotor speed. The control circuit includes a motor positioning circuit (442) which toggles the motor current when the rotor speed falls below a predetermined level to dither the rotor about a park position for a predetermined period. A pre-start rotor positioner (224) is provided to mechanically lock the rotor in its park position to ensure the availability of a high electrical starting torque. Finally, a minimum starting speed circuit (599) provides for motor startup from other than the normal rotor park position.
REFERENCES:
patent: 3297926 (1967-01-01), Campbell
patent: 3307094 (1967-02-01), Ogle
patent: 3584276 (1971-06-01), Ringland
patent: 3630304 (1971-12-01), Sahinkaya
patent: 3743873 (1973-07-01), de Jong
patent: 3818292 (1974-06-01), Berman
patent: 3845995 (1974-11-01), Wehde
patent: 3860843 (1975-01-01), Kawasaki
patent: 3860906 (1975-01-01), Browning
patent: 3959701 (1976-05-01), Bader
patent: 4096418 (1978-06-01), Marumoto
patent: 4121127 (1978-10-01), Adelski
patent: 4131829 (1978-12-01), Gocho
patent: 4292531 (1981-09-01), Williamson
patent: 4306156 (1981-12-01), Monaco
patent: 4329606 (1982-05-01), Monatagu
patent: 4357563 (1982-11-01), Ohno
patent: 4364004 (1982-12-01), Bourbeau
patent: 4374347 (1983-02-01), Muller
patent: 4384242 (1983-05-01), Ono
patent: 4409524 (1983-10-01), Nielsen
patent: 4450396 (1984-05-01), Thornton
patent: 4458228 (1984-07-01), Baumgartner
Gritter David J.
O'Neil Walter K.
Turner David
Eaton Corporation
Keane Patrick C.
Lewis J. G.
Rowe D. A.
Shoop Jr. William M.
LandOfFree
Ferrite permanent magnet electrical machine and the application does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ferrite permanent magnet electrical machine and the application , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ferrite permanent magnet electrical machine and the application will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1790327