Transformer providing two multiple phase outputs out of phase wi

Details Transformer providing two multiple phase outputs out of phase wi Transformer providing two multiple phase outputs out of phase wi

1990-06-28

1992-01-07

Wong, Peter S.

Electricity: power supply or regulation systems

Including a transformer or an inductor

Polyphase or plural transformers

363 5, 363 64, 336 5, H02M 704, H01F 3300

Patent

active

050794990

ABSTRACT:
A three-phase transformer includes six windings, disposed in three pairs, all of which six windings are serially interconnected. A desired turns ratio between the two windings of each pair establishes a desired phase shift between one three-phase output of the connected windings and a second three-phase output of the windings. These two windings can be used in combination to drive a load, such as an induction motor, such as through a twelve pulse rectifier requiring two three-phase outputs out of phase by 30.degree.. Alternately, one of the three-phase outputs can be used to supply the full load of the motor directly. This is particularly useful in a electric submersible pumping system having a three-phase induction motor which is normally operated by a maintenance intensive twelve-pulse rectifier, which motor needs to be directly driven through a by-pass motor controller when the rectifier is in maintenance.

REFERENCES:
patent: 3036258 (1962-05-01), Friedrich
patent: 4106089 (1978-08-01), Fettinger
patent: 4255784 (1981-03-01), Rosa
patent: 4713554 (1987-12-01), Henderson
patent: 4761726 (1988-08-01), Brown

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