A geophysical pulse voltage generator for seismic and electric exploration of the subsurface

• Main Authors: Ilia P. Dudchenko, Dmitry V. Kostylev, Sergey A. Gulyakov, Nikolay S. Stovbun
• Format: Article
• Language: English
• Published: Дальневосточного отделения Российской академии наук, Южно-Сахалинск, Федеральное государственное бюджетное учреждение науки Институт морской геологии и геофизики 2021-03-01
• Series: Геосистемы переходных зон
• Subjects: seismic exploration; electric exploration; geophysical research; insulated gate bipolar transistor; silicon carbide field-effect transistor; power converter; rectifier; seismic noise; electromagnetic sounding
• Online Access: http://journal.imgg.ru/web/full/f2021-1-4.pdf
• ISSN: 2541-8912; 2713-2161

This article describes the process and results of the development and testing of a cost-effective, portable, safe to move by air geophysical pulse voltage generator for seismic exploration of the subsurface. The generator is based on high-speed power electronic keys of a new generation consisting of an insulated gate bipolar transistor or a field-effect transistor based on silicon carbide, a compact power converter of alternating voltage from an autonomous generator or electric network to direct voltage using pulse-width modulation and current or voltage stabilization depending on the mode set by a researcher. Field tests were conducted to confirm the suitability of the developed design of the generator and the correctness of the chosen parameters of its elements. To this end, a detailed analysis of the effect of the developed geophysical generator on the parameters of the geoenvironment was carried out.