Power transfer of direct current with inductive couplings

Details Power transfer of direct current with inductive couplings Power transfer of direct current with inductive couplings

1984-12-06

1988-11-29

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural load circuit systems

Control of current or power

307149, 340310A, 340310R, H04M 1104

Patent

active

047884487

ABSTRACT:
A source of DC electrical power (A) provides DC electrical power to a power transmission cable (B) which extends to a remote location, such as a subsea module (D). The power transmission cable is connected with a pair of rectifiers (20a, 20b), each allowing only power of a selected polarity to be passed thereby. A pair of DC to AC inverters (24a, 24b) convert the received electrical power to high frequency square waves which are applied across primary windings (32a, 32b) of inductive couplers (30a, 30b). Secondary windings (38a, 38b) of the inductive couplers convey the AC electrical power to remote module rectifiers (40a, 40a) for providing DC electrical power to the subsea module. In this manner, DC electrical power is transmitted along the power transmission cable to reduce interference and crosstalk, yet the electric power is transmitted across an inductive coupler to facilitate safe separation of the remote module from the power transmission cable.

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