In order to improve the power factor and power density of electromagnetic transmitter, and make the transmitter small in size and light in weight, a novel electromagnetic transmitter circuit based on pulse width modulation (PWM) rectifier is presented in this paper. Parameters for the permanent synchronous generator (PMSG) PWM rectifier in the transmitter are designed. First, the mathematical model of the PMSG PWM rectifier is established, and then based on the flux oriented control theory in motor speed control system, a double closed loop control strategy, which consists of a decoupling current controller and an outer voltage controller is proposed. The active and reactive current decoupling control is obtained. To improve the dynamic performance and stability of the PMSG PWM rectifier, parameters in the PI controller are designed. Simulation and experimental results show that the proposed transmitter can not only meet the needs of geophysical exploration, but also has the advantages of simple structure, high power factor and low current harmonics. The proposed design method of controller can effectively determine the PI parameters and simplify control system.
ZHANG Jialin,ZHANG Yiming,DING Jianzhi,GAO Junxia
. Pulse Width Modulation Rectifier Based Electromagnetic Transmitter[J]. Journal of Shanghai Jiaotong University, 2018
, 52(9)
: 1023
-1030
.
DOI: 10.16183/j.cnki.jsjtu.2018.09.003
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