Method for switching current to successive sections of the stato

Details Method for switching current to successive sections of the stato Method for switching current to successive sections of the stato

1991-05-09

1992-08-04

Stephan, Steven L.

Electricity: motive power systems

Linear-movement motors

361 5, 361 3, H02K 4100, H02H 333

Patent

active

051362171

ABSTRACT:
When the runner of a linear motor having a long stator which is divided into sections crosses from a first section to a second section, an inverter power supply, which was providing current to the first section via a first switching unit having a relay, is initially gated out. Then the main relay contact paths in the first switching unit are opened and main relay contact paths in a second switching unit for the second section are closed. Only then is the power supply gated in again.

REFERENCES:
patent: Re33314 (1990-08-01), Cowles
patent: 4348618 (1982-09-01), Nakamura
patent: 4525762 (1985-06-01), Norris
patent: 4685019 (1987-08-01), Needham
patent: 4760483 (1988-07-01), Kugelman et al.
patent: 5064998 (1991-11-01), Holling

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