IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0987789
(2016-01-05)
|
등록번호 |
US-9780669
(2017-10-03)
|
발명자
/ 주소 |
- li, Yang
- Seto, Kan
- Grant, Michael
- Howard, Matt
- Li, Ruqi
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
3 |
초록
▼
In one embodiment, a power apparatus includes a buck converter including a first capacitor, a first inductor and a first switch for connection with a direct current power supply, wherein when the first switch is closed and the buck converter is connected to the direct current power supply, the first
In one embodiment, a power apparatus includes a buck converter including a first capacitor, a first inductor and a first switch for connection with a direct current power supply, wherein when the first switch is closed and the buck converter is connected to the direct current power supply, the first capacitor and the first inductor are connected in series to the direct current power supply, a full-bridge inverter including at least four switches including the first switch, a second, third and fourth switch so that the first switch is shared by the inventor and buck converter, the inverter being operative to convert direct current to alternating current by alternating (a) closing the first and fourth switch with the second and third switch open, and (b) closing the second and third switch with the first and fourth switch open, and a transformer to step down an output of the inverter.
대표청구항
▼
1. A power apparatus comprising: a buck converter including a first capacitor, a first inductor and a first switch for connection with a direct current power supply, wherein when the first switch is closed and the buck converter is connected to the direct current power supply, the first capacitor an
1. A power apparatus comprising: a buck converter including a first capacitor, a first inductor and a first switch for connection with a direct current power supply, wherein when the first switch is closed and the buck converter is connected to the direct current power supply, the first capacitor and the first inductor are connected in series to the direct current power supply;a full-bridge inverter including at least four switches, the at least four switches including the first switch, a second switch, a third switch and a fourth switch so that the first switch is shared by the full-bridge inventor and the buck converter, the full-bridge inverter being operative to convert direct current to alternating current by alternating: (a) closing the first switch and fourth switch with the second switch and third switch open; and (b) closing the second switch and third switch with the first switch and fourth switch open; anda transformer to step down an output of the full-bridge inverter. 2. The apparatus according to claim 1, further comprising a controller operative to open and close switches including the first switch, the second switch, the third switch and the fourth switch. 3. The apparatus according to claim 2, wherein: the controller is operative to close the first switch so that the first capacitor and the first inductor are connected in series to the direct current power supply and the first capacitor charges to a first voltage; andwhile the controller is operative to close the first switch so that the first capacitor and the first inductor are connected in series to the direct current power supply, the controller is operative to leave the second switch, the third switch and fourth switch open. 4. The apparatus according to claim 3, further comprising a fifth switch disposed between the first capacitor and the first inductor, the controller being operative to close the fifth switch while the first capacitor is charging to the first voltage. 5. The apparatus according to claim 4, further comprising a sixth switch disposed between the first capacitor and a connection to the direct current power supply, the controller being operative to leave the sixth switch open while the capacitor is charging to the first voltage. 6. The apparatus according to claim 5, wherein after the capacitor has charged to the first voltage, the controller is operative to open the first switch and the fifth switch and close the sixth switch causing the capacitor to charge to a second voltage which is greater than the first voltage. 7. The apparatus according to claim 6, wherein the first voltage is greater than 95% of the second voltage. 8. The apparatus according to claim 6, wherein after the capacitor has charged to the first voltage, the controller is operative to open the first switch and after a first delay open the fifth switch and close the sixth switch causing the capacitor to charge to a second voltage which is greater than the first voltage. 9. The apparatus according to claim 8, wherein after a second delay after closing the sixth switch, the controller is operative to leave the sixth switch closed and convert direct current to alternating current by alternating: (a) closing the first switch and fourth switch with the second switch and third switch open; and (b) closing the second switch and third switch with the first switch and fourth switch open. 10. The apparatus according to claim 9, wherein the transformer is operative to step down the output of the full-bridge inverter to a third voltage, the apparatus further comprising a rectifier to convert an output of the transformer from alternating current to direct current. 11. The apparatus according to claim 10, wherein the rectifier includes a seventh switch and an eighth switch, the controller being operative to alternate: (a) closing the first switch, fourth switch and seventh switch with the second switch, third switch and eighth switch open; and (b) closing the second switch, third switch and eighth switch with the first switch, fourth switch open and seventh switch open. 12. The apparatus according to claim 6, further comprising at least four diodes including a first diode, a second diode, a third diode and a fourth diode disposed anti-parallel to the first switch, the second switch, the third switch and the fourth switch, respectively. 13. The apparatus according to claim 12, wherein after the capacitor has charged to the first voltage while the first switch is open and the fifth switch is still closed, the first inductor is operative to drain to ground via the second diode. 14. The apparatus according to claim 6, wherein after closing the sixth switch, the controller is operative to leave the sixth switch closed and convert direct current to alternating current by alternating: (a) closing the first switch and fourth switch with the second switch and third switch open; and (b) closing the second switch and third switch with the first switch and fourth switch open. 15. The apparatus according to claim 14, wherein the transformer is operative to step down the output of the full-bridge inverter to a third voltage, the apparatus further comprising a rectifier to convert an output of the transformer from alternating current to direct current. 16. The apparatus according to claim 15, wherein the rectifier includes a seventh switch and an eighth switch, the controller being operative to alternate: (a) closing the first switch, fourth switch and seventh switch with the second switch, third switch and eighth switch open; and (b) closing the second switch, third switch and eighth switch with the first switch, fourth switch open and seventh switch open. 17. The apparatus according to claim 1, wherein the transformer is operative to step down the output of the full-bridge inverter to a third voltage, the apparatus further comprising a rectifier to convert an output of the transformer from alternating current to direct current. 18. A method comprising: operating a circuit including: a buck converter including a first capacitor, a first inductor and a first switch for connection with a direct current power supply, wherein when the first switch is closed and the buck converter is connected to the direct current power supply, the first capacitor and the first inductor are connected in series to the direct current power supply; a full-bridge inverter including at least four switches, the at least four switches including the first switch, a second switch, a third switch and a fourth switch so that the first switch is shared by the full-bridge inventor and the buck converter, the full-bridge inverter being operative to convert direct current to alternating current by alternating: (a) closing the first switch and fourth switch with the second switch and third switch open; and (b) closing the second switch and third switch with the first switch and fourth switch open; a fifth switch disposed between the first capacitor and the first inductor; and a transformer to step down an output of the full-bridge inverter; andclosing the first switch and fifth switch so that the first capacitor and the first inductor are connected in series to the direct current power supply and the first capacitor charges to a first voltage; andwhile the first switch and fifth switch are closed so that the first capacitor and the first inductor are connected in series to the direct current power supply, leaving the second switch, the third switch and fourth switch open. 19. The method according to claim 18, wherein the circuit also includes a sixth switch disposed between the first capacitor and a connection to the direct current power supply, the method further comprising leaving the sixth switch open while the capacitor is charging to the first voltage. 20. The method according to claim 19, further comprising: after the capacitor has charged to the first voltage, opening the first switch and the fifth switch and closing the sixth switch causing the capacitor to charge to a second voltage which is greater than the first voltage; and thenconverting direct current to alternating current by alternating: (a) closing the first switch and fourth switch with the second switch and third switch open; and (b) closing the second switch and third switch with the first switch and fourth switch open.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.