High-power turbine generators are needed in logging-while-drilling systems to supply power to the downhole instruments. The current high-power power supply system employs a rectifier-voltage regulator, and the rectified direct-current (DC) voltage increases with the mud flow rate. Moreover, as voltage regulator modules operate in limited ranges, various impellers and guide wheel combinations are generally used to generate electronic power. In practice, it is necessary to adjust different impeller and guide wheel combinations according to the mud pump discharge rate at the operation well site to change the flow rate of the mud on the impeller to meet the voltage range requirements of the DC conversion module. This study uses theoretical analysis and simulation calculations, applies a proportional–integral–differential closed-loop control model, and completes the design of a power supply system modulated and stabilized using pulse-width modulation (PWM). Moreover, the study involves analyzing its active-control rectification characteristics, conversion efficiency, and load-adjustment response time with an alternating-current (AC) voltage input of 60–150 Vms. The results suggest that the regulated power supply system can achieve active rectification over various AC inputs, ensuring that the bus voltage always meets the design requirements with high efficiency and satisfactory load adaptability. Therefore, a set of impeller and guide wheel combination based on this stabilized, modulated power supply system can be achieved to meet the operational needs of various AC power inputs under different mud flow ranges, improve applicability in different working wells.

随钻测井系统需要大功率涡轮发电机为井下仪器供电。目前的大功率供电系统采用整流稳压器，整流后的直流电压随着泥浆流量的增加而增大。此外，由于调压模块的工作范围有限，通常采用各种叶轮和导轮组合来产生电力。实际中，需要根据作业井场泥浆泵排量调整不同的叶轮和导轮组合，以改变叶轮上泥浆的流量，以满足直流转换模块的电压范围要求。本研究采用理论分析和仿真计算，应用比例-积分-微分闭环控制模型，并完成了采用脉宽调制（PWM）调制稳定的电源系统的设计。此外，该研究还分析了其主动控制整流特性、转换效率和交流（AC）电压输入为 60-150 Vms 时的负载调整响应时间。结果表明，该稳压电源系统能够对各种交流输入实现主动整流，确保母线电压始终满足设计要求，且效率高，负载适应性良好。因此，基于该稳定、调制供电系统可以实现一套叶轮和导轮组合，满足不同泥浆流量范围下各种交流电源输入的作业需要，提高在不同工作井的适用性。