High-voltage three-phase input electrical control module

Abstract

This invention relates to a high-voltage three-phase input power regulation module, comprising: an input unit for receiving AC power output from a three-phase high-voltage power supply, the input unit including multiple input terminals, the three-phase high-voltage power supply including multiple power lines, the multiple input terminals being connected to the multiple power lines respectively; an integrated module electrically connected to the input unit for converting the AC power into DC power; a resonant converter electrically connected to the integrated module for receiving the DC power and converting the DC power into a high-frequency AC power, wherein the resonant converter includes a conversion circuit, a resonant circuit, and a transformer, the resonant circuit being coupled between the conversion circuit and the transformer, the transformer including a primary winding, the resonant circuit and the primary winding forming a resonant slot; an auxiliary power supply unit electrically connected to the integrated module for generating auxiliary power and transmitting the auxiliary power to the resonant converter; and an output module electrically connected to the resonant converter and electrically connected to a load for converting the high-frequency AC power into an output DC power and transmitting it to the load.

Claims

1. A high-voltage three-phase input electrical control module, comprising: An input unit is provided for receiving AC power from a three-phase high-voltage power supply. The input unit includes multiple input terminals, and the three-phase high-voltage power supply includes multiple power lines. The multiple input terminals are respectively connected to the multiple power lines. An integrated module is electrically connected to the input unit to convert the AC power into DC power. A resonant converter is electrically connected to the integrated module to receive the DC power and convert it into high-frequency AC power. The resonant converter includes a conversion circuit, a resonant circuit, and a transformer. The resonant circuit is coupled between the conversion circuit and the transformer. The transformer includes a primary winding. The resonant circuit and the primary winding form a resonant slot. An auxiliary power supply unit is electrically connected to the integrated module to generate auxiliary power and transmit the auxiliary power to the resonant converter. An output module is electrically connected to the resonant converter and to a load to convert the high-frequency AC power into output DC power and transmit it to the load.

2. The high-voltage three-phase input electrical control module as claimed in claim 1, further comprising a DC bus connected between the integrated module and the resonant converter, the DC bus having a plurality of resistors and a plurality of capacitors, the integrated module including at least one first rectifier located between the input unit and the DC bus, the DC bus receiving the DC power and forming a first DC power through the plurality of resistors and the plurality of capacitors.

3. The high-voltage three-phase input power control module as claimed in claim 2, wherein the conversion circuit includes at least one switching module connected between the DC bus and the transformer, the at least one switching module including two-phase series-connected switching units, the two switching units being supplied with the first DC power and alternately turned on to generate the high-frequency AC power.

4. The high-voltage three-phase input electrical control module as claimed in claim 3, wherein the at least one switching module includes a first switching module and a second switching module, a first node is formed between the two switching units of the first switching module, a second node is formed between the two switching units of the second switching module, and the resonant slot is connected between the first node and the second node.

5. The high-voltage three-phase input electrical control module as claimed in claim 3, wherein the resonant circuit includes at least one resonant capacitor and one resonant inductor, the primary winding has a magnetizing inductor, the at least one resonant capacitor, the magnetizing inductor and the resonant inductor form the resonant slot, so that the two switching units form a zero-voltage switching (ZVS) when they are alternately turned on.

6. The high-voltage three-phase input electrical control module as claimed in claim 5, wherein the at least one resonant capacitor includes a plurality of resonant capacitors connected in parallel to form a resonant capacitor group, and the resonant capacitor group is connected in series between the conversion circuit and the primary winding.

7. The high-voltage three-phase input power control module as claimed in claim 2, wherein the integrated module further includes at least one second rectifier connected to the DC bus, the at least one second rectifier receiving the AC power and converting it into DC power, which is then transmitted to the auxiliary power supply unit after passing through the plurality of resistors and the plurality of capacitors.

8. The high-voltage three-phase input power control module as claimed in claim 1, wherein the transformer further includes a secondary winding, and the output module includes a plurality of third rectifiers connected to the secondary winding, the plurality of third rectifiers being used to receive the high-frequency AC power and convert the high-frequency AC power into a second DC power.

9. The high-voltage three-phase input power regulation module as claimed in claim 8, wherein the output module further includes a filter module connected between the plurality of third rectifiers and the load, the filter module receiving the second DC power and forming the output DC power.

10. The high-voltage three-phase input power control module as claimed in claim 4, wherein the resonant circuit includes at least one resonant capacitor and one resonant inductor, the primary winding has a magnetizing inductor, the at least one resonant capacitor, the magnetizing inductor, and the resonant inductor form the resonant slot, so that the two switching units form a zero-voltage switching (ZVS) when alternately conducting; the at least one resonant capacitor includes multiple resonant capacitors, the multiple resonant capacitors are connected in parallel to form a resonant capacitor group, the resonant capacitor group is connected in series between the conversion circuit and the primary winding; the integrated module further includes at least one second rectifier connected to the DC bus, the at least one second rectifier receives the AC power and converts it to DC power, which is then transmitted to the auxiliary power supply unit after passing through the multiple resistors and the multiple capacitors; the transformer further includes a secondary winding, the output module includes multiple third rectifiers connected to the secondary winding, and the... Multiple third rectifiers receive the high-frequency AC power and convert it into a second DC power. The output module further includes a filter module connected between the multiple third rectifiers and the load. The filter module receives the second DC power and forms the output DC power. The first rectifier, the second rectifier, and the third rectifier are bridge rectifiers. Each switching unit is a metal-oxide-semiconductor field-effect transistor. The resonant converter is an LLC resonant converter. The filter module is an LC filter. The transformer is an isolation transformer.

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