Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Plural linear-movement motors
Patent
1987-02-05
1988-01-26
Duggan, Donovan F.
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
Plural linear-movement motors
318135, 310 12, H02K 4100
Patent
active
047218924
ABSTRACT:
Disclosed is a power supply apparatus for a linear motor transportation system having a number of discrete linear motor units serially arranged along a track to generate a moving magnetic field for driving vehicle. The apparatus comprises the linear motor units divided into a plurality of power supply systems each subdivided into a plurality of groups such that each of the power supply systems includes a series of ones of the linear motor units, the series of the linear motor units in each of the power supply systems being successively allotted to different ones of the groups; feeders provided respectively correspondingly to the groups in each of the power supply systems; feeder section switches for connecting respective one ends of the linear motor units in each of the group with corresponding ones of the feeders; a plurality of power supply devices provided respectively correspondingly to the groups in each of the power supply systems; and output side switches provided for connecting the respective outputs of the power supply device with corresponding ones of the feeders. The respective other ends of the linear motor units are connected with return path feeders and in each of the power supply systems, the series of linear motor units are successively excited by a corresponding one of the plurality of power supply devices as the vehicle runs.
REFERENCES:
patent: 3721874 (1973-03-01), Pelenc
patent: 3803466 (1974-04-01), Starkey
patent: 4068152 (1978-01-01), Nakamura
patent: 4348618 (1982-09-01), Nakamura
patent: 4361095 (1982-11-01), Gibson
patent: 4454457 (1984-06-01), Nakamura
patent: 4633148 (1986-12-01), Prucher
patent: 4675582 (1987-06-01), Hommes et al.
Isaka Masayoshi
Nakamura Kiyoshi
Uchiyama Toyoharu
Duggan Donovan F.
Hitachi , Ltd.
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