Patent ID: 8511389

Claim:
A subsea wellhead assembly having a completion landing string inside a drilling riser and comprising: a power source for generating an alternating electrical current; a connector for connecting the power source to a receptacle in the subsea wellhead assembly: a first inductor electrically connected to the power source through the connector; a subsea control module delivering power and control signals to the subsea well assembly; a second inductor spaced from the first inductor, and located in the subsea control module, the second inductor positioned so that an electromotive force (EMF) is produced on the second inductor when the alternating electrical current is passed through the first inductor to thereby generate an alternating current signa 1 on the second inductor; a power pack having the second inductor disposed therein, the power pack adapted to receive the alternating current signal from the second inductor and to convert part of the alternating current signal generated thereon into a direct current signal; and a subsea electronics module, powered by the power pack and receiving the direct current signal, the subsea electronics module monitoring various measurements in the well head assembly, including temperatures and pressures of various hydraulic lines and actuating directional control valves to control a flow of hydraulic fluid to functions on the well head assembly and/or landing string.