Presentation 2009-10-23
An Investigation of Torque Constants and Induced Voltage Constants in Electric Motors
Hiroyuki TOUHARA, Shunsuke TANAKA, Toshikatsu SONODA,
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Abstract(in English) Traditionally, it has been accepted that electric motor torque and induced voltage constants are equal, but it is possible that the torque constant determined from the induced voltage constant fails to take the effects of armature reaction into consideration. This paper presents an experimental investigation of the relationship between the torque constant and the induced voltage constant in a DC shunt-wound electric motor. Results indicate that the induced voltage constant is significantly affected by the magnetic characteristics of the ferrous core, which forms the magnetic path, making it clear that the two constants are not always equal. It was confirmed that the effects of armature reaction are of variable intensity. Measurement of torque constant with a fixed armature, however, closely approximated the operating state torque constant.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Electric motor drive / Induced voltage constants / Torque constant / Armature reaction
Paper # EMCJ2009-61,MW2009-110
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Committee EMCJ
Conference Date 2009/10/15(1days)
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Paper Information
Registration To Electromagnetic Compatibility (EMCJ)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) An Investigation of Torque Constants and Induced Voltage Constants in Electric Motors
Sub Title (in English)
Keyword(1) Electric motor drive
Keyword(2) Induced voltage constants
Keyword(3) Torque constant
Keyword(4) Armature reaction
1st Author's Name Hiroyuki TOUHARA
1st Author's Affiliation Kinki University School of Humanity-Oriented Science and Engineering()
2nd Author's Name Shunsuke TANAKA
2nd Author's Affiliation Kinki University School of Humanity-Oriented Science and Engineering
3rd Author's Name Toshikatsu SONODA
3rd Author's Affiliation Kinki University School of Humanity-Oriented Science and Engineering
Date 2009-10-23
Paper # EMCJ2009-61,MW2009-110
Volume (vol) vol.109
Number (no) 241
Page pp.pp.-
#Pages 5
Date of Issue