Bi-directional power conversion device and auxiliary power generation circuit thereof
Patent Information
- Application Number
- TW114119123
- Authority / Receiving Office
- TW · TW
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-02-10
- Filing Date
- 2025-05-21
- Publication Date
- 2026-08-16
- Estimated Expiration
- 2045-05-20
Smart Images
Figure TWG2TA001072481_001 
Figure TWG2TA001072481_002 
Figure TWG2TA001072481_003
Abstract
Claims
1. An auxiliary power generation circuit, comprising: A first power transmitter receives a first input power supply and generates a first voltage; A second power transmitter is coupled to the first power transmitter and receives a second input power and generates a second voltage. And a power converter coupled to the first power transmitter and the second power transmitter, and selects to generate an auxiliary power supply based on the magnitude relationship between the first voltage and the second voltage.
2. The auxiliary power generation circuit as claimed in claim 1, wherein when the voltage value of the first voltage is greater than the voltage value of the second voltage, the power converter generates the auxiliary power according to the first voltage.
3. The auxiliary power generation circuit as claimed in claim 1, wherein when the voltage value of the first voltage is less than the voltage value of the second voltage, the power converter generates the auxiliary power according to the second voltage.
4. The auxiliary power generation circuit as claimed in claim 1, wherein the first power transmitter comprises: First filter; and a first rectifier coupled between the first filter and the power converter, wherein the first filter provides the first voltage to the first rectifier.
5. The auxiliary power generation circuit as claimed in claim 4, wherein the second power transmitter comprises: A second filter; And a second rectifier coupled between the second filter and the power converter, wherein the first filter provides the second voltage to the second rectifier.
6. The auxiliary power generation circuit as claimed in claim 5, wherein the output terminals of the first rectifier and the second rectifier are coupled to each other, and when the first voltage is greater than the second voltage, the first rectifier is turned on and the second rectifier is turned off; when the first voltage is not greater than the second voltage, the first rectifier is turned off and the second rectifier is turned on.
7. The auxiliary power generation circuit as claimed in claim 5, wherein the first rectifier is a bridge rectifier and the second rectifier is a diode.
8. The auxiliary power generation circuit as claimed in claim 1, wherein the first input power supply is an AC power supply and the second input power supply is a DC power supply.
9. A bidirectional power conversion device, comprising: a first power converter receiving a first power supply; a second power converter receiving a second power supply, wherein the second power converter is coupled to the first power converter via a power bus; and an auxiliary power generation circuit coupled to the first power converter, the second power converter, and the power bus, wherein the auxiliary power generation circuit includes: A first power transmitter receives a first input power supply and generates a first voltage; A second power transmitter coupled to the first power transmitter, receiving a second input power and generating a second voltage; and a third power converter coupled to the first power transmitter and the second power transmitter, selecting to generate an auxiliary power supply based on the relationship between the magnitudes of the first voltage and the second voltage, according to the first voltage or the second voltage.
10. The bidirectional power conversion device as claimed in claim 9, wherein when the voltage value of the first voltage is greater than the voltage value of the second voltage, the third power converter generates the auxiliary power supply based on the first voltage.
11. The bidirectional power conversion device as claimed in claim 9, wherein when the voltage value of the first voltage is less than the voltage value of the second voltage, the third power converter generates the auxiliary power supply according to the second voltage.
12. The bidirectional power conversion device as claimed in claim 9, wherein the first power transmitter comprises: First filter; And a first rectifier coupled between the first filter and the third power converter, wherein the first filter provides the first voltage to the first rectifier.
13. The bidirectional power conversion device as claimed in claim 12, wherein the second power transmitter comprises: A second filter; And a second rectifier coupled between the second filter and the power converter, wherein the first filter provides the second voltage to the second rectifier.
14. The bidirectional power conversion device as claimed in claim 13, wherein the output terminals of the first rectifier and the second rectifier are coupled to each other, and when the first voltage is greater than the second voltage, the first rectifier is turned on and the second rectifier is turned off; when the first voltage is not greater than the second voltage, the first rectifier is turned off and the second rectifier is turned on.
15. The bidirectional power conversion device as claimed in claim 13, wherein the first rectifier is a bridge rectifier and the second rectifier is a diode.
16. The bidirectional power conversion device as claimed in claim 9, wherein the first input power supply is an AC power supply, and the second power supply is a DC power supply.
17. The bidirectional power conversion device as claimed in claim 9, wherein the first power converter is an AC to DC power converter and the second power converter is a DC to DC current converter.
18. The bidirectional power conversion device as claimed in claim 9, further comprising: A high-voltage capacitor is coupled to the power bus.