Acoustic noise in induction motors: causes and solutions
This paper deals with the causes of acoustic noise in induction motors and presents methods to reduce the noise before and after the motor is manufactured. The acoustic noise in induction motors has three main sources: the first one is the ventilating system which is responsible for the noise level...
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| creator | Nau, S.L. Mello, H.G.G. |
| description | This paper deals with the causes of acoustic noise in induction motors and presents methods to reduce the noise before and after the motor is manufactured. The acoustic noise in induction motors has three main sources: the first one is the ventilating system which is responsible for the noise level of 2 and 4 pole-motors due to the fan speed. The second is the magnetic noise, generated by vibration of the core due to the electromagnetic forces in the airgap. The third is the noise generated by the bearings. The influence of the PWM frequency inverters on the magnetic noise is also considered and results of tests performed on motors are also presented. It is shown that a reduction in the fan diameter decreases the noise emitted by the ventilating system. Related to the magnetic noise, solutions have been adopted during design stage by stator/rotor slot design. Finally, the paper presents advantages, disadvantages and general comments about each solution and comparing noise level with parameters described in standards. |
| doi_str_mv | 10.1109/PCICON.2000.882782 |
| format | Conference Proceeding |
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The acoustic noise in induction motors has three main sources: the first one is the ventilating system which is responsible for the noise level of 2 and 4 pole-motors due to the fan speed. The second is the magnetic noise, generated by vibration of the core due to the electromagnetic forces in the airgap. The third is the noise generated by the bearings. The influence of the PWM frequency inverters on the magnetic noise is also considered and results of tests performed on motors are also presented. It is shown that a reduction in the fan diameter decreases the noise emitted by the ventilating system. Related to the magnetic noise, solutions have been adopted during design stage by stator/rotor slot design. Finally, the paper presents advantages, disadvantages and general comments about each solution and comparing noise level with parameters described in standards.</description><identifier>ISSN: 0090-3507</identifier><identifier>ISBN: 0780363345</identifier><identifier>ISBN: 9780780363342</identifier><identifier>EISSN: 2161-8127</identifier><identifier>DOI: 10.1109/PCICON.2000.882782</identifier><language>eng</language><publisher>IEEE</publisher><subject>Acoustic noise ; Electromagnetic forces ; Induction generators ; Induction motors ; Magnetic cores ; Magnetic noise ; Noise level ; Noise reduction ; Pulp manufacturing ; Pulse width modulation inverters</subject><ispartof>Record of Conference Papers. Industry Applications Society Forty-Seventh Annual Conference. 2000 Petroleum and Chemical Industry Technical Conference (Cat. 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No.00CH37112)</title><addtitle>PCICON</addtitle><description>This paper deals with the causes of acoustic noise in induction motors and presents methods to reduce the noise before and after the motor is manufactured. The acoustic noise in induction motors has three main sources: the first one is the ventilating system which is responsible for the noise level of 2 and 4 pole-motors due to the fan speed. The second is the magnetic noise, generated by vibration of the core due to the electromagnetic forces in the airgap. The third is the noise generated by the bearings. The influence of the PWM frequency inverters on the magnetic noise is also considered and results of tests performed on motors are also presented. It is shown that a reduction in the fan diameter decreases the noise emitted by the ventilating system. Related to the magnetic noise, solutions have been adopted during design stage by stator/rotor slot design. Finally, the paper presents advantages, disadvantages and general comments about each solution and comparing noise level with parameters described in standards.</description><subject>Acoustic noise</subject><subject>Electromagnetic forces</subject><subject>Induction generators</subject><subject>Induction motors</subject><subject>Magnetic cores</subject><subject>Magnetic noise</subject><subject>Noise level</subject><subject>Noise reduction</subject><subject>Pulp manufacturing</subject><subject>Pulse width modulation inverters</subject><issn>0090-3507</issn><issn>2161-8127</issn><isbn>0780363345</isbn><isbn>9780780363342</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2000</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNotj8tKAzEYhYMXcKx9ga7yAhn_P_e4K4PWQrEudF0ymRQi7UQmMwvf3pEKB87i8B34CFkh1IjgHt-bbbN_qzkA1NZyY_kVqThqZBa5uSb3YCwILYRUN6QCcMCEAnNHlqV8zRBIJbVzFbHrkKcypkD7nEqkqZ_TTWFMuafnPOahPNHgpxIL9X1HSz5Nf1t5ILdHfypx-d8L8vny_NG8st1-s23WO5YQ5MgEtFI508lOqWAxRom2VejwiFF7E6yTRqORIFoBSnuJQXHXegXOmDgLLMjq8ptijIfvIZ398HO4OItfF81Hew</recordid><startdate>2000</startdate><enddate>2000</enddate><creator>Nau, S.L.</creator><creator>Mello, H.G.G.</creator><general>IEEE</general><scope>6IE</scope><scope>6IH</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIO</scope></search><sort><creationdate>2000</creationdate><title>Acoustic noise in induction motors: causes and solutions</title><author>Nau, S.L. ; Mello, H.G.G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i104t-30b4597d4d55c81ee418b5191f1e6a7c8947617403b3056a41c529ba50977e633</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Acoustic noise</topic><topic>Electromagnetic forces</topic><topic>Induction generators</topic><topic>Induction motors</topic><topic>Magnetic cores</topic><topic>Magnetic noise</topic><topic>Noise level</topic><topic>Noise reduction</topic><topic>Pulp manufacturing</topic><topic>Pulse width modulation inverters</topic><toplevel>online_resources</toplevel><creatorcontrib>Nau, S.L.</creatorcontrib><creatorcontrib>Mello, H.G.G.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan (POP) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP) 1998-present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Nau, S.L.</au><au>Mello, H.G.G.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Acoustic noise in induction motors: causes and solutions</atitle><btitle>Record of Conference Papers. Industry Applications Society Forty-Seventh Annual Conference. 2000 Petroleum and Chemical Industry Technical Conference (Cat. No.00CH37112)</btitle><stitle>PCICON</stitle><date>2000</date><risdate>2000</risdate><spage>253</spage><epage>263</epage><pages>253-263</pages><issn>0090-3507</issn><eissn>2161-8127</eissn><isbn>0780363345</isbn><isbn>9780780363342</isbn><abstract>This paper deals with the causes of acoustic noise in induction motors and presents methods to reduce the noise before and after the motor is manufactured. The acoustic noise in induction motors has three main sources: the first one is the ventilating system which is responsible for the noise level of 2 and 4 pole-motors due to the fan speed. The second is the magnetic noise, generated by vibration of the core due to the electromagnetic forces in the airgap. The third is the noise generated by the bearings. The influence of the PWM frequency inverters on the magnetic noise is also considered and results of tests performed on motors are also presented. It is shown that a reduction in the fan diameter decreases the noise emitted by the ventilating system. Related to the magnetic noise, solutions have been adopted during design stage by stator/rotor slot design. Finally, the paper presents advantages, disadvantages and general comments about each solution and comparing noise level with parameters described in standards.</abstract><pub>IEEE</pub><doi>10.1109/PCICON.2000.882782</doi><tpages>11</tpages></addata></record> |
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| identifier | ISSN: 0090-3507 |
| ispartof | Record of Conference Papers. Industry Applications Society Forty-Seventh Annual Conference. 2000 Petroleum and Chemical Industry Technical Conference (Cat. No.00CH37112), 2000, p.253-263 |
| issn | 0090-3507 2161-8127 |
| language | eng |
| recordid | cdi_ieee_primary_882782 |
| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Acoustic noise Electromagnetic forces Induction generators Induction motors Magnetic cores Magnetic noise Noise level Noise reduction Pulp manufacturing Pulse width modulation inverters |
| title | Acoustic noise in induction motors: causes and solutions |
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