“DESIGN AND SIMULATION OF HIGH CURRENT POWER SUPPLY FOR OFFSHORE INSTRUMENTATION”

The seabed logging (SBL) method which employs marine Control Source
Electromagnetic (CSEM) sounding is an effective method in detecting hydrocarbon
beneath the seabed layer. The marine CSEM sounding uses horizontal electric dipole
(HED) to transmit signal to the receivers which are lying on the sea floor. This project
involves the design of power supply to drive the HED which acts as a transmitter. The
specific requirements have been met having DC output current with the peak of 1250 A
and -1250 A with frequency of 0.125 Hz. The DC pulsating voltage has been found to be
less than 20 V and -20 V. The design procedures are explained in details.