Study Of Pulsed Power Supply System Using Rechargeable Battery As Primary Energy Source

To satisfy the request of field experiment, a compacter and smaller pulsed power supply system using rechargeable battery as primary power supply is designed. In this system, a high voltage inverter module is used to boost the 24V direct current to high voltage direct current capable of charging the energy-storage capacitor. Then the capacitor discharges to the load, generating a power pulse.Three energy-storage capacitor charging methods are introduced and compared in this thesis. Then the high efficient and easy-controlling method is adopted.In order to ensure the safety of operators and the automation of system control, the control system is governed by computer. The whole control system includes two parts: one is the remote control centre based on computer and the other is the local control unit based on a monolithic computer AT89C52. The hardware and software of the control system are designed according to the principles of"from top to bottom"and"from bottom to top". In the hardware design, some functional circuits are calculated carefully and simulated on computer to determine the best circuit parameters, and some active measures are taken to make sure the control system work reliably. In the software design, a high efficiency binary protocol is adopted in the communication between the remote control centre and the local control part. The software of the remote centre is developed by Visual Basic 6.0, and the software of local control part is developed on JY2X00 IDE by C language. The functions of charging control, synchronous control, signal conversion and sampling, peak value detecting, communication with four measurement instruments and so on are realized.The error of the synchronous control signal's delay is less than 2μs. And the delay can be set to satisfy the request of driving different pulsed power devices. In addition, the synchronous control signal is able to drive components directly, such asμs detonators and so on. Therefore, this pulsed power supply system can be applied to drive explosively-driven magnetic flux compression generators, to drive accelerators of intense charged particle beams constituted by transformer, pulse-forming line and diode, and so on.After the hardware and software of the control system have been debugged and tested in laboratory, some charging experiments using several different high voltage inverter modules to charge the energy-storage capacitor are performed to test the charging control function. These experiments prove that the control system can work effectively to control the charging process. Then some experiments are carried out using this pulsed power system to drive accelerator of intense charged particle beams. All experimental results show that this pulsed power supply system can realize all the designed functions and work reliably.