High-power electromagnetic surveying transmitter system

Abstract

The invention discloses a high-power electromagnetic surveying transmitter system which comprises a generator set, a three-phase rectification bridge, a filter capacitor, an H type inversion bridge, a booster transformer, a single-phase rectification bridge, a transmitting bridge, an electrode, a temperature detection circuit, a first voltage detection circuit, a second voltage detection circuit, a first current detection circuit, a second current detection circuit, a first central processing unit, a second central processing unit and a transmitting control platform. Transmitting voltage parameter and transmitting current parameter are transferred through communication, and actual transmitting voltage and actual transmitting current are displayed in real time through parameter feedback; transmitting parameters of the transmitting control platform are received to control the transmitting of the transmitting bridge, and transmitting voltage and transmitting current signals are acquired and fed back to the transmitting control platform in real time; the PWM (pulse-width modulation) of the H type inversion bridge is realized to obtain stable and reliable transmitting signals; and the electrode is the signal transmitting port of the system. Thus, the accuracy and response speed of the transmitted waveform are improved.

Description

technical field [0001] The invention relates to an electromagnetic prospecting transmitter system, in particular to an electromagnetic prospecting transmitter, which belongs to a power electronic rectifying inverter. Background technique [0002] The electromagnetic prospecting transmitter constructs the distribution information of the conductivity of the underground medium by obtaining the response of the earth medium to the incident electromagnetic field. Metal ores usually have good electrical conductivity, so the electromagnetic method is the most effective geophysical prospecting method for finding metal ores. [0003] With the rapid development of modern power electronics technology and devices, the topology of the main circuit of the electromagnetic survey transmitter is also changing. Commonly used are diode uncontrolled rectifier bridge and H-type inverter bridge. The diode uncontrolled rectifier bridge completes the AC / DC conversion from AC to DC; the H-type inve...

AI Technical Summary

Problems solved by technology

But there are also problems of high product quality and volume, the energy in the transmitter in high-power applications cannot be fully utilized, resources cannot be used more effectively, and there are problems with high harmonics and reactive power

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