Method and apparatus for providing uninterruptible power
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H02J-007/00
H02J-009/00
출원번호
UP-0518388
(2006-09-08)
등록번호
US-7705489
(2010-05-20)
발명자
/ 주소
Nielsen, Henning Roar
Gurunathan, Ranganathan
Kumar, Pothapragada Pavana
Klikic, Damir
출원인 / 주소
American Power Conversion Corporation
대리인 / 주소
Lando & Anastasi, LLP
인용정보
피인용 횟수 :
21인용 특허 :
15
초록▼
At least one aspect is directed to an uninterruptible power supply that includes a first input having an input line connection and an input neutral connection to receive a first input voltage from a first voltage source, a second input to receive a second input voltage from a second voltage source,
At least one aspect is directed to an uninterruptible power supply that includes a first input having an input line connection and an input neutral connection to receive a first input voltage from a first voltage source, a second input to receive a second input voltage from a second voltage source, and a boost circuit configured to provide a positive output DC voltage with respect to the input neutral connection and a negative output DC voltage with respect to the input neutral connection in both a line mode of operation and a backup mode of operation. The power supply also includes a first connection circuit to couple the first input to the boost circuit in the line mode of operation, and a second connection circuit to couple the second input to the boost circuit in the backup mode of operation, the second connection circuit being configured to isolate the second voltage source from the input neutral connection in the line mode of operation.
대표청구항▼
What is claimed is: 1. An uninterruptible power supply comprising: a first input having an input line connection and an input neutral connection to receive a first input voltage from a first voltage source; a battery; a second input to receive a second input voltage from the battery; a boost circui
What is claimed is: 1. An uninterruptible power supply comprising: a first input having an input line connection and an input neutral connection to receive a first input voltage from a first voltage source; a battery; a second input to receive a second input voltage from the battery; a boost circuit configured to provide a positive output DC voltage with respect to the input neutral connection and a negative output DC voltage with respect to the input neutral connection in both a line mode of operation and a backup mode of operation; a first connection circuit to couple the first input to the boost circuit in the line mode of operation; and a second connection circuit to couple the second input to the boost circuit in the backup mode of operation; wherein the uninterruptible power supply is constructed and arranged to isolate the battery from the input neutral connection in the line mode of operation; wherein the boost circuit has a positive input, a negative input and a neutral input, wherein the neutral input is coupled to the input neutral connection, and wherein the second connection circuit includes a first diode coupled between a positive terminal of the battery and the positive input and a second diode coupled between a negative terminal of the battery and the negative input; wherein the uninterruptible power supply is configured to operate with an AC voltage source at the first input having a peak AC voltage that is less than the positive output DC voltage, and wherein the battery has a battery voltage that is less than the positive output DC voltage and greater than the peak AC voltage. 2. The uninterruptible power supply of claim 1, further comprising an output circuit coupled to the boost circuit to receive the positive output DC voltage and the negative output DC voltage and to provide an output AC voltage at an output having an output line connection and an output neutral connection. 3. The uninterruptible power supply of claim 2, wherein the uninterruptible power supply is configured to provide an uninterrupted connection from the input neutral connection to the output neutral connection. 4. The uninterruptible power supply of claim 1, wherein the first connection circuit includes at least one relay. 5. The uninterruptible power supply of claim 1, further comprising a first relay coupled in parallel with the first diode and a second relay coupled in parallel with the second diode. 6. The uninterruptible power supply of claim 1, further comprising a battery charging circuit coupled to the battery, the battery charging circuit having a positive charging circuit and a negative charging circuit, wherein the positive charging circuit is configured to charge the battery during a positive portion of the first input voltage, and wherein the negative charging circuit is configured to charge the battery during a negative portion of the first input voltage. 7. The uninterruptible power supply of claim 1, wherein the uninterruptible power supply is constructed and arranged to isolate the first voltage source from the boost circuit in the backup mode of operation and draw current from the battery. 8. An uninterruptible power supply comprising: a first input having an input line connection and an input neutral connection to receive a first input voltage from a first voltage source; a battery; a second input to receive a second input voltage from the battery; a boost circuit configured to provide a positive output DC voltage with respect to the input neutral connection and a negative output DC voltage with respect to the input neutral connection in both a line mode of operation and a backup mode of operation; a first connection circuit to couple the first input to the boost circuit in the line mode of operation; and a second connection circuit to couple the second input to the boost circuit in the backup mode of operation; wherein the uninterruptible power supply is constructed and arranged to isolate the battery from the input neutral connection in the line mode of operation; wherein the boost circuit has a positive input, a negative input and a neutral input, wherein the neutral input is coupled to the input neutral connection, and wherein the second connection circuit includes a first diode coupled between a positive terminal of the battery and the positive input and a second diode coupled between a negative terminal of the battery and the negative input; and wherein the power supply is constructed and arranged to simultaneously draw current from both the first voltage source and the battery in a combined mode of operation. 9. An uninterruptible power supply comprising: a first input having an input line connection and an input neutral connection to receive a first input voltage from a first voltage source; a backup voltage source; a second input to receive a second input voltage from the backup voltage source; a boost circuit configured to provide a positive output DC voltage with respect to the input neutral connection and a negative output DC voltage with respect to the input neutral connection in both a line mode of operation and a backup mode of operation; and means for coupling the second input to the boost circuit in the backup mode of operation and for isolating the backup voltage source from the input neutral connection in the line mode of operation, wherein the means includes a first isolation device coupled to a positive terminal of the backup voltage source and a second isolation device coupled to a negative terminal of the backup voltage source; wherein the uninterruptible power supply is configured to operate with an AC voltage source at the first input having a peak AC voltage that is less than the positive output DC voltage, and wherein the battery has a battery voltage that is less than the positive output DC voltage and greater than the peak AC voltage. 10. The uninterruptible power supply of claim 9, wherein the backup voltage source is a battery. 11. The uninterruptible power supply of claim 10, further comprising an output circuit coupled to the boost circuit to receive the positive output DC voltage and the negative output DC voltage and to provide an output AC voltage at an output having an output line connection and an output neutral connection. 12. The uninterruptible power supply of claim 11, wherein the uninterruptible power supply is configured to provided an uninterrupted connection from the input neutral connection to the output neutral connection. 13. The uninterruptible power supply of claim 9, further comprising means for isolating the boost circuit from the first voltage source in the backup mode of operation. 14. The uninterruptible power supply of claim 10, wherein the boost circuit has a positive input, a negative input and a neutral input, wherein the neutral input is coupled to the input neutral connection, and wherein the first isolation device includes a first diode coupled between a positive terminal of the battery and the positive input and the second isolation device includes a second diode coupled between a negative terminal of the battery and the negative input. 15. The uninterruptible power supply of claim 14, further comprising a first relay coupled in parallel with the first diode and a second relay coupled in parallel with the second diode. 16. The uninterruptible power supply of claim 10, further comprising means for charging the battery. 17. An uninterruptible power supply comprising: a first input having an input line connection and an input neutral connection to receive a first input voltage from a first voltage source; a backup voltage source; a second input to receive a second input voltage from the backup voltage source; a boost circuit configured to provide a positive output DC voltage with respect to the input neutral connection and a negative output DC voltage with respect to the input neutral connection in both a line mode of operation and a backup mode of operation; means for coupling the second input to the boost circuit in the backup mode of operation and for isolating the backup voltage source from the input neutral connection in the line mode of operation, wherein the means includes a first isolation device coupled to a positive terminal of the backup voltage source and a second isolation device coupled to a negative terminal of the backup voltage source; and means for simultaneously drawing current from both the first voltage source and the backup voltage source in a combined mode of operation. 18. The uninterruptible power supply of claim 17, wherein the backup voltage source is a battery. 19. A method of providing power to a load, the method comprising: receiving input power at a line connection and a neutral connection from a first voltage source; rectifying the input power to produce a first rectified voltage at a first node during a positive portion of an input voltage wave and a second rectified voltage at a second node during a negative portion of the input voltage wave; in a line mode of operation, producing a positive DC voltage with respect to the neutral connection from the first rectified voltage and a negative DC voltage with respect to the neutral connection from the second rectified voltage; coupling a second voltage source to the first node and the second node using a connection circuit that is configured to isolate the second voltage source from the neutral connection in the line mode of operation, wherein coupling a second voltage source includes coupling a first isolation device between the second voltage source and the first node and coupling a second isolation device between the second voltage source and the second node; and simultaneously drawing current from both the first voltage source and the second voltage source in a combined mode of operation. 20. The method of claim 19, wherein the second voltage source is a battery, and wherein the method further comprises: detecting an outage of the first voltage source; producing the positive DC voltage and the negative DC voltage from a voltage of the battery in a backup mode of operation. 21. The method of claim 20, further comprising producing an output AC voltage from the positive DC voltage and the negative DC voltage in both the line mode of operation and the backup mode of operation. 22. The method of claim 21, further comprising isolating the first voltage source from the first node and the second node in the backup mode of operation. 23. The method of claim 19, wherein the second voltage source includes a battery, and wherein the method further includes charging the battery in the line mode of operation. 24. The method of claim 19, wherein the second voltage source is a battery.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (15)
Divan Deepakraj M. (Madison WI), AC to DC to AC power conversion apparatus with few active switches and input and output control.
Raddi, William J.; Paulakonis, Joseph C.; Johnson, Jr., Robert W., Power factor corrected UPS with improved connection of battery to neutral and methods of operation thereof.
Johnson ; Jr. Robert W. (Raleigh NC) Paulakonis Joseph C. (Chapel Hill NC), Uninterrupted power supply system having improved power factor correction circuit.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.