POWER SUPPLY SYSTEM

Embodiments of this application provide a power supply system, to resolve technical problems in the conventional technology that a current on a direct current bus is high, a diameter of a cable is large, and costs of the cable are high. In embodiments of this application, the energy combiner apparatus is used to convert output of a power supply, and has three output terminals, so that output ports are increased. In the three output terminals of the energy combiner apparatus, a voltage of 1500 V is output between a first output terminal and a second output terminal, a voltage of 1500 V is also output between the second output terminal and a third output terminal, and a total of 3 kV is output. Therefore, an overall output voltage is increased in a case of equal output power. Because the overall output voltage is increased, a current transmitted on a cable may be reduced. Therefore, a thinner cable may be used, so that costs of the cable are reduced. In addition, four cables conventionally required for connecting to the output terminals of the energy combiner apparatus are reduced to three cables, so that a quantity and costs are reduced.