Improved Model Analysis and Current-Loop Design for Marine Controlled Source Electromagnetic Transmitter

The marine controlled source electromagnetic transmitter is a crucial device of marine electromagnetic method, its transient state and steady state is followed with interest. In this paper, an improved model of the phase-shifted full-bridge converter is minutely described on the basis of some specific challenges of electromagnetic transmitter based on full-bridge structure, such as power losses and duty-cycle loss. Then, an efficient current-loop compensator designed with improved model proposed in this paper is mentioned. The comparative analysis and simulation results of the improved model and the traditional model could prove the superiority of the improved to the system response speed and control stability. The electromagnetic transmitter could achieve better transient state and steady state characteristics by the compensator designed with the improved model.