Transmitter Research of Great Deep Resistivity Imaging

The design of high power resistivity imaging transmitter which based on bridge cascade voltage-balance technique is proposed in this paper. The bridge cascade high voltage inverters use cascading modular structure. This approach can be multi-level series, aims to increase the output voltage. At the same time, this avoids the problems of device damage caused by voltage unbalance while the IGBT connect in series, and makes power devices work stable and reliable. In this design we use C snubber circuit to protect the IGBT. The snubber circuit is simple and has no energy consumption. Performance testing and model experiments were carried out after device development was completed. This further verified the feasibility of design for greet deep resistivity imaging transmitter.