Abstract: A power supply system includes an input stage converting circuit, a first energy storage component, and an output stage converting circuit. The first energy storage component is electrically coupled to the input stage converting circuit, and the output stage converting circuit is electrically coupled to the first energy storage component. The input stage converting circuit is configured to charge the first energy storage component, and the first energy storage component stores charging electricity. The output stage converting circuit is configured to convert the charging electricity into output electricity and provide the output electricity to a load. The input stage converting circuit has a first electric power, and the output stage converting circuit has a second electric power greater than the first electric power. A method for converting power of the power converter is also disclosed herein.

Abstract: A power converter includes a DC/DC converting circuit and a first energy storage element. The DC/DC converting circuit includes a first output terminal and a second output terminal. The first energy storage element includes a first terminal and a second terminal. The first output terminal of the DC/DC converting circuit is electrically connected to one terminal of an external load. The first terminal of the first energy storage element is electrically connected to the second output terminal of the DC/DC converting circuit. The second terminal of the first energy storage element is electrically connected to the other terminal of the external load. The DC/DC converting circuit is configured to provide a variable electric power. The power converter provides the power supply according to the DC/DC converting circuit and the first energy storage element, and the variable electric power is less than the power required by the external load.

Abstract: A power converter includes a DC/DC converting circuit and a first energy storage element. The DC/DC converting circuit includes a first output terminal and a second output terminal. The first energy storage element includes a first terminal and a second terminal. The first output terminal of the DC/DC converting circuit is electrically connected to one terminal of an external load. The first terminal of the first energy storage element is electrically connected to the second output terminal of the DC/DC converting circuit. The second terminal of the first energy storage element is electrically connected to the other terminal of the external load. The DC/DC converting circuit is configured to provide a variable electric power. The power converter provides the power supply according to the DC/DC converting circuit and the first energy storage element, and the variable electric power is less than the power required by the external load.

Abstract: A power supply system includes an input stage converting circuit, a first energy storage component, and an output stage converting circuit. The first energy storage component is electrically coupled to the input stage converting circuit, and the output stage converting circuit is electrically coupled to the first energy storage component. The input stage converting circuit is configured to charge the first energy storage component, and the first energy storage component stores charging electricity. The output stage converting circuit is configured to convert the charging electricity into output electricity and provide the output electricity to a load. The input stage converting circuit has a first electric power, and the output stage converting circuit has a second electric power greater than the first electric power. A method for converting power of the power converter is also disclosed herein.

Abstract: An AC-DC power converter is provided, and includes a phase-shifting transformer, at least one rectifier set and at least one DC-DC converter, wherein the phase-shifting transformer has a primary winding and at least one secondary winding, and the at least one secondary winding is configured as at least one winding unit; each rectifier set has at least one rectifier, and each rectifier is electrically connected with the secondary winding of a corresponding winding unit; and the DC-DC converter is electrically connected with a corresponding rectifier set and outputs a predetermined DC voltage. A DC charging station is also provided correspondingly. The phase-shifting transformer has at least one secondary winding, and the secondary windings are configured as at least one winding unit, thus providing different phase-shifting angles based on the actual number of windings in each winding unit, thereby decreasing current harmonic components and increasing the system power factor.