Invention Grant
- Patent Title: Intelligent level transition systems and methods for transformerless uninterruptible power supply
- Patent Title (中): 用于无变压器不间断电源的智能电平转换系统和方法
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Application No.: US13563481Application Date: 2012-07-31
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Publication No.: US09214874B2Publication Date: 2015-12-15
- Inventor: Yashomani Y. Kolhatkar , Silvio Colombi , Marco Piemontesi , Lauro Strozzi , M N Lakshmi Prasad
- Applicant: Yashomani Y. Kolhatkar , Silvio Colombi , Marco Piemontesi , Lauro Strozzi , M N Lakshmi Prasad
- Agency: Fletcher Yoder, P.C.
- Main IPC: H02H7/122
- IPC: H02H7/122 ; H02M7/487 ; H02M7/5387 ; H02J9/06
Abstract:
Systems and methods are provided for controlling an uninterruptible power supply (UPS) to transition between three- or higher-level operation and two-level operation in a neutral-point-clamped (NPC) inverter. In an example, a UPS system includes an NPC inverter and a controller. The NPC inverter may supply power to a load. The controller may control the inverter to operate in a three-level mode or higher when the load is substantially balanced and to operate in a two-level mode when the load is substantially unbalanced.
Public/Granted literature
- US20140036555A1 Intelligent Level Transition Systems and Methods for Transformerless Uninterruptible Power Supply Public/Granted day:2014-02-06
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