Title :
Experimental study on stray load loss during high-speed constant-voltage operation of squirrel-cage induction motors - the influence of gap length on 4- and 8-pole induction motors -
Author :
Hirotsuka, Isao ; Tsuboi, Kazuo ; Kawakami, Kunihiro ; Matsuura, Hidemi ; Mizuno, Takayuki
Author_Institution :
Dept. of Electr. Eng., Chubu Univ., Kasugai, Japan
Abstract :
Recently, three-phase squirrel-cage induction motors (IMs) have often been used as variable-speed motors driven by an inverter system. However, when an IM is operated over a wide speed range, its losses and efficiency change remarkably. In this paper, the authors present the results of the stray load losses (SLLs) determined by two methods using 4- and 8-pole IMs having different gap lengths; the motors are driven by a sinusoidal-wave source during high-speed constant-voltage operation. Moreover, the characteristics of the efficiencies of the IMs are investigated.
Keywords :
dynamometers; induction motors; dynamometers; high-speed constant-voltage operation; sinusoidal-wave source; stray load loss; three-phase squirrel-cage induction motors; variable-speed motors; Equations; Frequency; Induction motors; Inverters; Power amplifiers; Signal generators; Stators; Synchronous motors; Testing; Voltage; Dynamometer; Gap length; High-speed constant-voltage operation; Induction motor; Reverse rotational test; Stray load loss;
Conference_Titel :
Electrical Machines and Systems, 2009. ICEMS 2009. International Conference on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4244-5177-7
Electronic_ISBN :
978-4-88686-067-5
DOI :
10.1109/ICEMS.2009.5382968
