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Polyphase line filter and its operation method

A filter and harmonic technology, applied in the field of passive harmonic filters, can solve problems such as difficulty in use and/or cost

Active Publication Date: 2011-03-23
科比传动技术(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It must be borne in mind that the frequencies generated in the filter, if possible, are not in the range of the resonance point, but are connected to dynamic loads with load changes in the grid and / or switching on or off the compensation units installed in the grid change, it is hard to predict
[0009] Therefore, this indicates that the commonly used specific harmonic filters have serious technical and economic disadvantages, making them more difficult and / or more expensive to use

Method used

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  • Polyphase line filter and its operation method
  • Polyphase line filter and its operation method
  • Polyphase line filter and its operation method

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Embodiment Construction

[0047] figure 1 is a view of the polyphase line filter according to the first embodiment of the present invention. The polyphase line filter is generally indicated by the reference numeral 10 . The filter comprises a first filter input FE1 and a second filter input FE2, and a first filter output FA1 and a second filter output FA2. Furthermore, the filter comprises a polyphase filter core 12 comprising a first filter leg 14 and a second filter leg 16 . A first inductor 20 is wound onto the first filter leg 14 and connected at a first end to the first filter input FE1. The second end of the first inductor 20 is connected to the first filter output FA1 through the second inductor 22 wound on the second filter leg 16 of the polyphase filter core 12 . A connection point 24 of the first inductance 20 and the second inductance 22 is connected to a first input 26 of a parallel branch circuit 28 . The second filter input FE2 passes through a third inductor 30 wound onto the second ...

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Abstract

A method of executing a bag of tasks application in a cluster over a distributed computing system, the cluster having a cluster resource manager. The method includes requesting that the cluster resource manager authorize access by a remote user of the distributed computing system to any idle nodes of the cluster, submitting a bag of tasks slave process to the cluster resource manager, loading thebag of tasks slave process in one of the idle nodes without an allocation operation, sequentially scheduling tasks from the bag of tasks to the bag of tasks slave process, and executing the bag of tasks slave process either until finished or until the node in which the bag of tasks slave process is loaded is required owing to a local allocation request.

Description

technical field [0001] The present invention generally relates to a polyphase line or mains filter, and more particularly to a passive harmonic filter as a front end of a non-linear consumer or load. Background technique [0002] In power grids or power mains, especially in the field of drive engineering, a large increase in the proportion of high-power electronics means an increase in distortion of the supply voltage due to the higher harmonic content of the current. In order to avoid harmonic currents in the grid, European standards have been issued in recent years that clearly define the guidelines for some manufacturers of electrical and electronic equipment. [0003] Different manufacturers around the world have different active and passive solutions to comply with published standards, guidelines and recommendations. Depending on the power and application of the equipment, or the usage of the equipment by the customer, these solutions have both advantages and disadvant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/28H02M1/12
CPCH02M1/126H03H7/40
Inventor 托尔斯滕·恩格拉格
Owner 科比传动技术(上海)有限公司
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