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Active power factor correction for aircraft power system harmonic mitigation

A power factor correction and power factor technology, which is applied in aerospace vehicle power supply systems, power distribution, aircraft parts, etc., can solve problems such as TRU or ATRU being heavy and expensive, increasing weight, and difficult to meet power density targets

Inactive Publication Date: 2015-03-25
EATON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

TRU or ATRU can be very heavy and expensive
The harmonics injected onto the input significantly increase the weight added by the TRU or ATRU unit and make it difficult to meet the power density target when the non-linear load increases

Method used

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  • Active power factor correction for aircraft power system harmonic mitigation
  • Active power factor correction for aircraft power system harmonic mitigation
  • Active power factor correction for aircraft power system harmonic mitigation

Examples

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Embodiment Construction

[0028] Reference will now be made in detail to embodiments of the present disclosure, examples of which are described herein and illustrated in the accompanying drawings. While the invention will be described in conjunction with Examples, it will be understood that the Examples are not intended to limit the invention to these Examples. On the contrary, the invention is intended to cover alternatives, modifications and equivalents as included within the spirit and scope of the invention as defined by the appended claims.

[0029] image 3 is a block diagram of an embodiment of an aircraft power distribution system 40 shown coupled to an engine 42 and a generator 44 . The generator 44 may be, for example but not limited to, a random frequency generator. The power distribution system 40 may include a three-phase AC power bus 46, two power factor correction (PFC) units 48, a DC power bus 52, a DC-DC converter 54, a number of actuator controls 56, a number of brushless DC (BLDC) ...

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Abstract

Active power factor correction can be used to reduce input harmonics in an aircraft power distribution system. One or more power factor correction units (70) can be placed in the power distribution system to profile an input signal. Each power factor correction unit (70) can include a converter, such as an AC-DC converter, and can be placed in the power system bus (86) on the input side of the load (84). In an embodiment, a PFC unit can include a boost rectifier topology with active power factor correction for harmonics elimination. A power factor control circuit (72) is configured to output a control signal for the power factor correction units (70), the control signal being produced according to a harmonic of the DC output of the rectifier.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Patent Application No. 61 / 663,288, filed June 22, 2012. technical field [0003] The present disclosure relates generally to aircraft power distribution systems, including active power factor correction within power distribution systems. Background technique [0004] In general, the aircraft industry is trending towards the development of more electric aircraft (MEA) by replacing hydraulic and pneumatic actuation systems with electric actuation systems, thereby increasing the demand on aircraft power generation and distribution systems. For example, system stresses such as transient loads, reactive loads, other non-linear loads and current harmonics must increasingly be considered to ensure proper operation of all electrical components. Additionally, the aircraft industry is also trending away from frequency modulated generators in favor of variable frequency (also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/42B64G1/42
CPCH02M1/4216H02M1/4225B64D2221/00H02M7/04Y02B70/10Y02T50/50H02M1/12
Inventor S·A·米尔J·涅利S·西利D·多尔蒂A·汤普森P·托雷斯J·布罗德韦尔T·布莱尔
Owner EATON CORP
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