Noise Source Identification of Small Fan-BLDC Motor System for Refrigerators
Noise levels in household appliances are increasingly attracting attention from manufacturers and customers. Legislation is becoming more severe on acceptable noise levels and low noise is a major marketing point for many products. The latest trend in the refrigerator manufacturing industr...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2006-01-01
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| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/IJRM/2006/63214 |
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| _version_ | 1849411196059385856 |
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| author | Yong-Han Kim Bo-Suk Yang Chang-Joon Kim |
| author_facet | Yong-Han Kim Bo-Suk Yang Chang-Joon Kim |
| author_sort | Yong-Han Kim |
| collection | DOAJ |
| description | Noise levels in household appliances are increasingly attracting attention from manufacturers and
customers. Legislation is becoming more severe on acceptable noise levels and low noise is a major
marketing point for many products. The latest trend in the refrigerator manufacturing industry is to use
brushless DC (BLDC) motors instead of induction motors in order to reduce energy consumption and
noise radiation. However, cogging torque from BLDC motor is an undesirable effect that prevents the
smooth rotation of the rotor and results in noise. This paper presents a practical approach for
identifying the source of excessive noise in the small fan-motor system for household refrigerators.
The source is presumed to a mechanical resonance excited by torque ripple of the BLDC motor.
By using finite element analysis, natural frequencies and mode shapes of the rotating part of the system
are obtained and they are compared with experimental mode shapes obtained by electronic torsional
excitation test which uses BLDC motor itself as an exciter.
Two experimental validations are carried out to confirm the reduction of excessive noise. |
| format | Article |
| id | doaj-art-61646fca7e1948308c6b385b0082e5aa |
| institution | Kabale University |
| issn | 1023-621X 1542-3034 |
| language | English |
| publishDate | 2006-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-61646fca7e1948308c6b385b0082e5aa2025-08-20T03:34:52ZengWileyInternational Journal of Rotating Machinery1023-621X1542-30342006-01-01200610.1155/IJRM/2006/6321463214Noise Source Identification of Small Fan-BLDC Motor System for RefrigeratorsYong-Han Kim0Bo-Suk Yang1Chang-Joon Kim2CRC for Integrated Engineering Asset Management, School of Engineering Systems, Queensland University of Technology, 2 George Street, Brisbane, QLD 4001, AustraliaSchool of Mechanical Engineering, Pukyong National University, Yondang-dong Nam-gu, Busan 608-739, South KoreaDigital Appliance Research Laboratory, LG Electronics Inc., Kuro 3 dong, Kuro-gu, Seoul, South KoreaNoise levels in household appliances are increasingly attracting attention from manufacturers and customers. Legislation is becoming more severe on acceptable noise levels and low noise is a major marketing point for many products. The latest trend in the refrigerator manufacturing industry is to use brushless DC (BLDC) motors instead of induction motors in order to reduce energy consumption and noise radiation. However, cogging torque from BLDC motor is an undesirable effect that prevents the smooth rotation of the rotor and results in noise. This paper presents a practical approach for identifying the source of excessive noise in the small fan-motor system for household refrigerators. The source is presumed to a mechanical resonance excited by torque ripple of the BLDC motor. By using finite element analysis, natural frequencies and mode shapes of the rotating part of the system are obtained and they are compared with experimental mode shapes obtained by electronic torsional excitation test which uses BLDC motor itself as an exciter. Two experimental validations are carried out to confirm the reduction of excessive noise.http://dx.doi.org/10.1155/IJRM/2006/63214 |
| spellingShingle | Yong-Han Kim Bo-Suk Yang Chang-Joon Kim Noise Source Identification of Small Fan-BLDC Motor System for Refrigerators International Journal of Rotating Machinery |
| title | Noise Source Identification of Small Fan-BLDC Motor System for Refrigerators |
| title_full | Noise Source Identification of Small Fan-BLDC Motor System for Refrigerators |
| title_fullStr | Noise Source Identification of Small Fan-BLDC Motor System for Refrigerators |
| title_full_unstemmed | Noise Source Identification of Small Fan-BLDC Motor System for Refrigerators |
| title_short | Noise Source Identification of Small Fan-BLDC Motor System for Refrigerators |
| title_sort | noise source identification of small fan bldc motor system for refrigerators |
| url | http://dx.doi.org/10.1155/IJRM/2006/63214 |
| work_keys_str_mv | AT yonghankim noisesourceidentificationofsmallfanbldcmotorsystemforrefrigerators AT bosukyang noisesourceidentificationofsmallfanbldcmotorsystemforrefrigerators AT changjoonkim noisesourceidentificationofsmallfanbldcmotorsystemforrefrigerators |