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Device for minimizing transformer saturation caused by power transfer in a communication system

A technology for power transmission and communication systems, applied in the field of communication systems, can solve problems such as limitations, high cost of transformer components, and reduction of signal-to-noise ratio of communication systems

Inactive Publication Date: 2009-10-21
BROADCOM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Flux imbalance 200 reduces signal-to-noise ratio in communication system connections
Saturation of the third transformer 120 causes a loss of the first communication signal 136
This saturation also limits the amount of energy that can be transferred between the source device 100 and the powered device when the first communication signal 136 is communicated while maintaining the communication system connection.
[0008] Designing transformer assemblies with sufficient tolerances to eliminate flux imbalance is limited by cost

Method used

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  • Device for minimizing transformer saturation caused by power transfer in a communication system
  • Device for minimizing transformer saturation caused by power transfer in a communication system
  • Device for minimizing transformer saturation caused by power transfer in a communication system

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Embodiment Construction

[0076] As stated above, the present invention proposes a solution to minimize saturation in transformers of communication systems due to power transfer. The following will combine Figure 3-9 Describe this plan in detail.

[0077] Detection and Compensation Circuitry

[0078] image 3 is a schematic structural diagram of a powered device 316 according to an embodiment of the present invention. Powered device 316 detects and minimizes saturation of transformer 320 . Transformer 320 is part of a power-over-ethernet system. Alternatively, transformer 320 is part of a communication system that transmits electrical power over the communication line. The powered device has a detection circuit 300 , a compensation circuit 302 and a powered device transceiver 324 . Coil 304 is at least one device located within the magnetic flux of transformer 320 . The coil 304 converts electric energy and magnetic energy into each other. As part of the transformer 320, the coil 304 is a heli...

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Abstract

The present invention relates to methods and apparatus for minimizing saturation caused by power transfer in a communication system transformer, such as a transformer in a Power over Ethernet system. Detects flux imbalances in transformers caused by saturation. Compensating current is fed into the coil to minimize flux imbalance and saturation.

Description

technical field [0001] The present invention relates to communication systems and, more particularly, to methods and apparatus for minimizing saturation in communication system transformers due to power transfer. Background technique [0002] The continuous development of communication network technology has created the need for remote devices connected to the communication network. This requires powering these remote devices. One method of providing power to remote equipment is via a hardwired communication network connection. Typical remote devices are Internet Protocol phones and wireless access points. [0003] figure 1 Shown is a schematic diagram of a circuit for connecting power to a powered device (powered device) 106 disposed at a remote end of the power supply device 100 through a typical communication system connection. The power supply device 100 provides power to the The powered device 106 provides direct current (DC). The first pair of communication wires ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/24G05F1/565H02P13/00H04B1/40
Inventor 沙瓦西·法拉希凯文·布朗
Owner BROADCOM CORP