A method to achieve the timesharing output of the same power based on AC/DC electrical source sharing the same main circuit was introduced. The topology of main circuit and its working principle were given. The fivelevel carrier phaseshifting modulating strategy of AC transform and the cascaded phaseshifting control strategy of DC transform were analysed. A phaseanglesynchronous current balancing control strategy was proposed, in order to realize high power DC output and the balance of the power of each phase on the basis of threephase AC converter. Experimental results were obtained with timesharing 115 V/400 Hz/100 kVA AC output and 270 V/80 kW DC output based on the same power supply, which verified the rationality and feasibility of the topology and control strategy.