Analysis and test of capacitor-battery cooperative pulsed power supply for highly inductive load

The flat-top pulsed magnetic field has the dual advantages of high field strength and high stability, which is an important extreme experimental condition in frontier basic science research. It is difficult to study a pulse power supply with both high instantaneous power and high average power to generate high current of ten thousand of amperes with steep edge, long flat top duration and high stability on the load of large inductive pulse magnet. Therefore, this paper proposes a capacitor-battery cooperative pulsed power supply scheme, and analyzes the process of the cooperative power supply by complex frequency domain method, as well as verifies its superiority by simulation. At last, a prototype is developed and the tests of the current commutating between capacitor and battery are carried out.