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US 2026/0189135 A1Published application
Battery emulator and operating method thereof
AssigneePhoenixon Controls Inc.
InventorsKi Sool NAH, Hyuk Joo KWEON, Woo Seok LEE
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Abstract
Provided are a battery emulator including a first power factor correction circuit, a second power factor correction circuit, a DC-DC converter, and a plurality of relay switches, and an operating method of the battery emulator. The battery emulator enables high-efficiency operation under various output voltage conditions, and facilitates the generation of low voltage output to reduce switching losses and heat generation problems, thereby improving energy efficiency.
Claims10
A battery emulator, comprising:
- a first power factor correction circuit configured to convert a first AC voltage provided from a 3-phase power source through a connection circuit into a DC voltage and output it as a first link voltage;
- a second power factor correction circuit configured to convert a second AC voltage provided from the 3-phase power source through the connection circuit into a DC voltage and output it as a second link voltage;
- a DC-DC converter configured to convert the voltage level of an input voltage and output it;
- and
- a plurality of relay switches configured such that, according to a target output voltage, the connection relationship is changed so that each of the first link voltage and the second link voltage is input to the DC-DC converter, or so that the second link voltage is not input to the DC-DC converter and only the first link voltage is input to the DC-DC converter.
2 more elements
An operating method of a battery emulator, comprising the steps of:
- in a first power factor correction circuit, converting a first AC voltage provided from a 3-phase power source through a connection circuit into a DC voltage and outputting it as a first link voltage;
- in a second power factor correction circuit, converting a second AC voltage provided from the 3-phase power source through the connection circuit into a DC voltage and outputting it as a second link voltage;
- in a DC-DC converter, converting the voltage level of an input voltage and outputting it;
- and
- in a plurality of relay switches, changing the connection relationship of the plurality of relay switches according to a target output voltage so that each of the first link voltage and the second link voltage is input to the DC-DC converter, or so that the second link voltage is not input to the DC-DC converter and only the first link voltage is input to the DC-DC converter.
2 more elements
Dependencies are inferred from the claim text.