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1/10/2007July 3, 2006 PAGE 1
ITT Industries/X2Y Attenuators, LLC
Case Study of Filtered Connector Application in Blower Motor to Meet EMC Requirements
July 3, 2006 PAGE 2©X2Y Attenuators, LLC
Prototype Test Goals
Design and implement filtered connector with X2Y® Technology on a blower motor that can meet or exceed EMC requirements set forth by automobile manufacturers:• 2005 SAE World Congress paper:
Electromagnetic Compatibility of Direct Current Motors in an Automobile Environment “
Measure differences in modifications to connector.Verify X2Y performance vs. conventional EMI filtering.
http://www.x2y.com/x2y/x2y.nsf/1/sae.jpg/$FILE/sae.jpghttp://www.x2y.com/x2y/x2y.nsf/1/sae.jpg/$FILE/sae.jpghttp://www.x2y.com/x2y/x2y.nsf/1/sae.jpg/$FILE/sae.jpg
July 3, 2006 PAGE 3©X2Y Attenuators, LLC
Testing Presented Within this Document
Data was taken by X2Y Attenuators, LLC at the Detroit facility. The measured radiated and conducted emissions data is used for A to B comparisons of filter effectiveness. Although the data is not validated to specific test requirements at an approved test facility, products that meet performance benchmarks established in X2Y’s test chamber typically result in approvals at certified test facilities.
July 3, 2006 PAGE 4©X2Y Attenuators, LLC
Test Set-up
Radiated Emissions Test Set-up
July 3, 2006 PAGE 5©X2Y Attenuators, LLC
RE Test Set-upThe DUT was placed in an ETS-Lindgren IC-GTEM 250 along with a 12 V power source connected by a 3 meter harness.
Note: the harness is wrapped between wooden pins on a wooden platform for repeatability of measurements. Note: DUT is tested under load conditions.
July 3, 2006 PAGE 6©X2Y Attenuators, LLC
RE Test Set-up (continued)
An IFR AN920 spectrum analyzer was used to measure and record RE.The spectrum analyzer settings are:• Frequency spectrum = 100 kHz – 1000 MHz• Bandwidth = 120 kHz• Sampling = 3 Peak Hold
July 3, 2006 PAGE 7©X2Y Attenuators, LLC
RE - Baseline DUT
-5
0
5
10
15
20
25
30
35
40
45
0 100 200 300 400 500 600 700 800 900 1000
Frequency (MHz)
dBuV
Ambient
No Filter
(2) Ind & Cap Production
RE Test Set-up (continued)
To baseline DUT measurements for A to B comparisons, an ambient, DUT non-filtered, & DUT production filter were taken.
Note: These measurement will appear on all data plots.
Note: Ambient Noise
July 3, 2006 PAGE 8©X2Y Attenuators, LLC
Test Set-up
Conducted Emissions Test Set-up
July 3, 2006 PAGE 9©X2Y Attenuators, LLC
CE Test Set-up
The DUT was placed in a shield box measuring approx 29 by 18 inches.Between the DUT and 12 V power source are (2) LISNsType 6338-5-TS-50N. (manufactured by solar Electronics Co.)There is approx 8 inches of harness between power supply & LISN and LISN & DUT.Note: DUT is tested under load conditions.
July 3, 2006PAGE
10©X2Y Attenuators, LLC
CE Test Set-up (continued)
Again, an IFR AN920 spectrum analyzer was used to measure and record CE.Measurements were taken in (2) different frequency spectrums.• Spectrum analyzer settings #1:
Frequency spectrum = 150 kHz – 30 MHzBandwidth = 9 kHzSampling = 3 Peak Hold
• Spectrum analyzer settings #2:Frequency spectrum = 30 MHz – 200 MHzBandwidth = 120 kHzSampling = 3 Peak Hold
July 3, 2006PAGE
11©X2Y Attenuators, LLC
CE Test Set-up (continued)
To baseline DUT measurements for A to B comparisons, an ambient, DUT non-filtered, & DUT production filter measurement was taken.
Note: These measurement will appear on all data plots.
CE - Baseline DUT
-30
-20
-10
0
10
20
30
40
0 20 40 60 80 100 120 140 160 180 200
Frequency (MHz)
dBuV
AmbientNo Filter(2) Ind & Cap Production
July 3, 2006PAGE
12©X2Y Attenuators, LLC
Connector Design Issues
Connector Prototype and Design Issues
July 3, 2006PAGE
13©X2Y Attenuators, LLC
Connector Design IssuesDetermining the ground layout of the connector face is critical.(Connector supplied by ITT Industries/Cannon.)• Bottom only GND• Top & Bottom GND
Note: solder connection preferred, press fit will lose RF performance. • Top & Bottom GND with (–) power lead attached to GND
Note: solder connection preferred, press fit will lose RF performance.
Bottom-only Top & BottomTop & Bottom w/ (-) power attachment
Solder connection
Solder Connection
X2Y® X2Y®
July 3, 2006PAGE
14©X2Y Attenuators, LLC
Connector Implementation Issues
Connector Prototype and
Motor Implementation Issues
July 3, 2006PAGE
15©X2Y Attenuators, LLC
Connector Implementation Issues
Determining the ground interface of the connector and motor housing is critical.A good RF GND would require multiple connector & motor housing contacts at several points.
Note: Conductive tape was used to make GND connection to top of connector during testing.
GND connections
Top GND connection made w/ conductive tape
July 3, 2006PAGE
16©X2Y Attenuators, LLC
Test Results
Connector Radiated Emissions Test Results
July 3, 2006PAGE
17©X2Y Attenuators, LLC
RE Test Results
RE - Bottom-only
-5
0
5
10
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20
25
30
35
40
45
0 100 200 300 400 500 600 700 800 900 1000
Frequency (MHz)
dBuV
AmbientNo Filter(2) Ind & Cap Production0.44uF X2Y with bottom-only plate
Bottom-only
X2Y®
July 3, 2006PAGE
18©X2Y Attenuators, LLC
RE Test ResultsTop & Bottom
RE - Top & Bottom
-5
0
5
10
15
20
25
30
35
40
45
0 100 200 300 400 500 600 700 800 900 1000
Frequency (MHz)
dBuV
AmbientNo Filter(2) Ind & Cap Production0.44uF X2Y with bottom-only plate0.44uF X2Y w/ top & bottom (soldered)
X2Y®
July 3, 2006PAGE
19©X2Y Attenuators, LLC
RE Test Results
RE - Top & Bottom w/ metal tape
-5
0
5
10
15
20
25
30
35
40
45
0 100 200 300 400 500 600 700 800 900 1000
Frequency (MHz)
dBuV
AmbientNo Filter(2) Ind & Cap Production0.44uF X2Y with bottom-only plate0.44uF X2Y w/ top & bottom (soldered)0.44 X2Y w/ top & bottom plate (soldered) - w/ metal tape
Top & Bottom
X2Y®
July 3, 2006PAGE
20©X2Y Attenuators, LLC
RE Test Results
RE - Top & Bottom w/ metal tape & (-) lead shorted
-5
0
5
10
15
20
25
30
35
40
45
0 100 200 300 400 500 600 700 800 900 1000
Frequency (MHz)
dBuV
AmbientNo Filter(2) Ind & Cap Production0.44uF X2Y with bottom-only plate0.44uF X2Y w/ top & bottom (soldered)0.44 X2Y w/ top & bottom plate (soldered) - w/ metal tape0.44uF X2Y w/ top & bottom plate (soldered) - w/ metal tape & (-) lead shorted
Top & Bottom w/ (-) power attachment
July 3, 2006PAGE
21©X2Y Attenuators, LLC
Test Results
Connector Conducted Emissions Test Results
July 3, 2006PAGE
22©X2Y Attenuators, LLC
CE Test Results
CE - Top & Bottom w/ metal tape & (-) lead shorted
-30
-20
-10
0
10
20
30
40
0 20 40 60 80 100 120 140 160 180 200
Frequency (MHz)
dBuV
AmbientNo Filter(2) Ind & Cap Production0.44uF X2Y w/ top & bottom plate (soldered) - w/ metal tape & (-) lead shorted
Top & Bottom w/ (-) power attachment
July 3, 2006PAGE
23©X2Y Attenuators, LLC
SUMMARY
The technical feasibility of X2Y® Technology as EMI suppression for DC motors has been proven many times, and is in production with multiple motor manufacturers.The following technical and patent-related information is now available in the public domain, and can be downloaded from the internet.
Application NotesApplication Note #4001Application Note #4002Application Note #4003Application Note #4004Application Note #4005
Technical Papers2005 SAE World Congress Motor Paper2004 IEEE EMC Motor PaperJan 2001 - Test & Measurement World ArticleNov 2001 - EMWC Paper2001 IEEE EMC Motor Paper1999 IEEE EMC Motor Paper
Technical Presentations2005 SAE World Congress Motor PresentationJuly 27, 2004 - Motor Presentation at Ford Motor CompanyX2Y® Technology in DC Motors Presentation2004 IEEE EMC Motor Presentation
http://www.x2y.com/x2y/x2y.nsf/1/4001.pdf/$FILE/4001.pdfhttp://www.x2y.com/x2y/x2y.nsf/1/4002.pdf/$FILE/4002.pdfhttp://www.x2y.com/x2y/x2y.nsf/1/4003.pdf/$FILE/4003.pdfhttp://www.x2y.com/x2y/x2y.nsf/1/4004.pdf/$FILE/4004.pdfhttp://www.x2y.com/x2y/x2y.nsf/1/Transient.pdf/$FILE/Transient.pdfhttp://www.x2y.com/x2y/x2y.nsf/1/sae.jpg/$FILE/sae.jpghttp://www.x2y.com/x2y/x2y.nsf/1/sae.jpg/$FILE/sae.jpghttp://www.x2y.com/x2y/x2y.nsf/1/100404Img.pdf/$FILE/100404Img.pdfhttp://www.e-insite.net/tmworld/index.asp?layout=article&articleId=CA187299http://www.e-insite.net/tmworld/index.asp?layout=article&articleId=CA187299http://www.x2y.com/x2y/x2y.nsf/1/EMWCAPAPERNOVEMBER12000.pdf/$FILE/EMWCAPAPERNOVEMBER12000.pdfhttp://www.x2y.com/x2y/x2y.nsf/1/KuTEMOmniCellTestingofSmallDCMotors.pdf/$FILE/KuTEMOmniCellTestingofSmallDCMotors.pdfhttp://www.x2y.com/x2y/x2y.nsf/1/noisemeasure.pdf/$FILE/noisemeasure.pdfhttp://www.x2y.com/x2y/x2y.nsf/1/saedc.pdf/$FILE/saedc.pdfhttp://www.x2y.com/x2y/x2y.nsf/1/saedc.pdf/$FILE/saedc.pdfhttp://www.x2y.com/x2y/x2y.nsf/1/072604FDCM.pdf/$FILE/072604FDCM.pdfhttp://www.x2y.com/x2y/x2y.nsf/1/072604FDCM.pdf/$FILE/072604FDCM.pdfhttp://www.x2y.com/x2y/x2y.nsf/1/072604FDCM.pdf/$FILE/072604FDCM.pdfhttp://www.x2y.com/x2y/x2y.nsf/1/072604DCMot.pdf/$FILE/072604DCMot.pdfhttp://www.x2y.com/x2y/x2y.nsf/1/072604DCMot.pdf/$FILE/072604DCMot.pdfhttp://www.x2y.com/x2y/x2y.nsf/1/IEEEEMCmotor.pdf/$FILE/IEEEEMCmotor.pdfhttp://www.x2y.com/x2y/x2y.nsf/1/IEEEEMCmotor.pdf/$FILE/IEEEEMCmotor.pdf
July 3, 2006PAGE
24©X2Y Attenuators, LLC
SUMMARY (continued)Delphi Technologies, Inc. Hill-Rom Services, Inc.
July 3, 2006PAGE
25©X2Y Attenuators, LLC
SUMMARY (continued)Johnson Electric Valeo
July 3, 2006PAGE
26©X2Y Attenuators, LLC
Contact Information
Please email inquiries and questions to x2y@x2y.com , or:
X2Y® Attenuators, LLC 2730B West 21st Street Erie, PA 16506-2972 Phone: 814.835.8180 Fax: 814.835.9047
Please visit X2Y on the web at www.x2y.com.
DISCLAIMER: Information and suggestions furnished in this document by X2Y Attenuators, LLC are believed to be reliable and accurate. X2Y Attenuators, LLC assumes no responsibility for its use, nor for any infringements of patents or other rights of third parties which may result from its’ use. X2Y® is a registered trademark. All other brand or product names mentioned in this document are trademark or registered trademarks of their respective holders. This document is subject to change without notice. Copyright © X2Y Attenuators, LLC all rights reserved. Performance results reported in this and other published or copyrighted material, can only be achieved with patented X2Y® components sourced from X2Y® licensed manufacturers or their authorized distribution channels.
ITT Industries/X2Y Attenuators, LLCPrototype Test GoalsTesting Presented Within this DocumentTest Set-upRE Test Set-upRE Test Set-up (continued)RE Test Set-up (continued)Test Set-upCE Test Set-upCE Test Set-up (continued)CE Test Set-up (continued)Connector Design IssuesConnector Design IssuesConnector Implementation IssuesConnector Implementation IssuesTest ResultsRE Test ResultsRE Test ResultsRE Test ResultsRE Test ResultsTest ResultsCE Test ResultsSUMMARYSUMMARY (continued)SUMMARY (continued)Contact Information
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