Title:
CONTROL OF FOUR-LEG TRANSFORMERLESS UNINTERRUPTIBLE POWER SUPPLY
Document Type and Number:
WIPO Patent Application WO/2011/084227
Kind Code:
A3
Abstract:
A system and method for managing a 4 leg transformerless Uninterrupted Power Supply is disclosed. The system comprises a 3 leg inverter modulation signal generator that applies signals to a modulation circuit that generates a 4th leg modulation signal based on the applied 3 leg inverter modulation signal characteristics. The determined 4th modulation signal modifies the 3 leg inverter modulation signals and rectifier modulation signals, which are applied to corresponding inverter and rectifier sections of an Uninterruptible Power Supply.
Inventors:
MURALI DORA KRISHNA (IN)
COLOMBI SILVIO (CH)
NERELLA PRABHAKAR KRISHNA (IN)
KATUKURI NARENDER REDDY (IN)
KOLHATKAR YASHOMANI Y (IN)
COLOMBI SILVIO (CH)
NERELLA PRABHAKAR KRISHNA (IN)
KATUKURI NARENDER REDDY (IN)
KOLHATKAR YASHOMANI Y (IN)
Application Number:
PCT/US2010/055612
Publication Date:
August 02, 2012
Filing Date:
November 05, 2010
Export Citation:
Assignee:
GEN ELECTRIC (US)
MURALI DORA KRISHNA (IN)
COLOMBI SILVIO (CH)
NERELLA PRABHAKAR KRISHNA (IN)
KATUKURI NARENDER REDDY (IN)
KOLHATKAR YASHOMANI Y (IN)
MURALI DORA KRISHNA (IN)
COLOMBI SILVIO (CH)
NERELLA PRABHAKAR KRISHNA (IN)
KATUKURI NARENDER REDDY (IN)
KOLHATKAR YASHOMANI Y (IN)
International Classes:
H02J9/06; H02M5/458
Foreign References:
| US20050162137A1 | 2005-07-28 | |||
| JP2007159276A | 2007-06-21 |
Other References:
EYYUP DEMIRKUTLU ET AL: "Output Voltage Control of A Four-Leg Inverter Based Three-Phase UPS by Means of Stationary Frame Resonant Filter Banks", ELECTRIC MACHINES&DRIVES CONFERENCE, 2007. IEMDC '07. IEEE INTERNATIONAL, IEEE, PISCATAWAY, NJ, USA, 1 May 2007 (2007-05-01), pages 880 - 885, XP031114954, ISBN: 978-1-4244-0742-2
FRASER M E ET AL: "Transformerless four-wire PWM rectifier and its application in AC-DC-AC converters", IEE PROCEEDINGS: ELECTRIC POWER APPLICATIONS, INSTITUTION OF ELECTRICAL ENGINEERS, GB, vol. 142, no. 6, 1 November 1995 (1995-11-01), pages 410 - 16, XP006004096, ISSN: 1350-2352, DOI: 10.1049/IP-EPA:19952278
FRASER M E ET AL: "Transformerless four-wire PWM rectifier and its application in AC-DC-AC converters", IEE PROCEEDINGS: ELECTRIC POWER APPLICATIONS, INSTITUTION OF ELECTRICAL ENGINEERS, GB, vol. 142, no. 6, 1 November 1995 (1995-11-01), pages 410 - 16, XP006004096, ISSN: 1350-2352, DOI: 10.1049/IP-EPA:19952278
Attorney, Agent or Firm:
CONKLIN, Mark, A. et al. (Global Patent Operation2 Corporate Drive, Suite 64, Shelton CT, US)
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