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Dynamic event trigger control method and device for UPS system power sharing

An event-triggered, control method technology, applied in circuit devices, harmonic reduction devices, AC networks of the same frequency with different sources, etc., can solve the problem that the dynamic ETC strategy power distribution stability has not been proven, and the dynamic ETC strategy has not yet been applied. Active and harmonic power distribution and other issues, to achieve the effect of plug and play, reduce communication data exchange, and quickly share

Active Publication Date: 2021-10-08
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

To the best of the author's knowledge, the dynamic ETC strategy has not been applied to modular online UPS systems to solve active and harmonic power allocation problems, and the stability of the dynamic ETC strategy for power allocation has not been demonstrated

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  • Dynamic event trigger control method and device for UPS system power sharing
  • Dynamic event trigger control method and device for UPS system power sharing
  • Dynamic event trigger control method and device for UPS system power sharing

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0035] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described h...

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Abstract

The invention discloses a dynamic event trigger control method and device for UPS system power sharing. The method comprises the steps of designing an active power controller and a harmonic power controller; establishing an active / harmonic power sharing state model according to the input of the active / harmonic power controller; defining an active / harmonic power measurement error according to the latest trigger time active / harmonic power and the real-time active / harmonic power; and according to the active / harmonic power measurement error, and a dynamic event triggering condition of an event generator acquired by the active / harmonic power controller, determining that active power sharing is realized under a triggering time sequence of the event generator. The method is used for sharing active power and harmonic power in a modular online UPS system, the virtual impedance is adaptively adjusted based on the method, and compared with a static ETC strategy, the provided control method based on event triggering can further reduce communication pressure.

Description

technical field [0001] The invention relates to a power system control method, in particular to a dynamic event trigger control method and device for UPS system power sharing. Background technique [0002] In recent years, due to the rapid development of critical loads such as data centers, communication networks, and IT servers, there has been a high demand for uninterruptible power supply (UPS) systems to provide more stable power to these devices. Among them, the modular online UPS system becomes attractive because of its flexibility, reliability and easy maintenance. Multiple modules are connected in parallel in the modular UPS system, and each module includes AC / DC rectifier, inverter, bypass switch and battery pack. [0003] In a modular UPS system, the droop control strategy is usually used for paralleling inverters. However, the active power sharing performance between UPS modules using this control strategy is hardly satisfactory due to the mismatch of line resist...

Claims

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Application Information

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IPC IPC(8): H02J3/32H02J3/01H02J3/06H02J9/06
CPCH02J3/32H02J3/01H02J3/06H02J9/062H02J2203/20Y02E40/40
Inventor 吕京航
Owner HARBIN INST OF TECH
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