Title :
An improvement to standard polyphase induction machine efficiency tests utilizing direct online stator winding resistance measurement
Author :
Feldman, Ralph ; He, Zhang ; Tomasini, Matteo ; Bradley, Keith ; Wheeler, Patrick
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Nottingham, Nottingham, UK
Abstract :
A direct online stator winding resistance measurement scheme is proposed as a means to improve standard efficiency tests of polyphase induction machines. To enable resistance measurement a DC current is injected online into the stator winding and response voltages are captured. In experimental tests an unequal number of anti-parallel diodes has been used to inject DC current. A bespoke temperature controlled shunt has been used to improve accuracy of DC current measurement. Experimental results from a standard efficiency test conducted to IEC 60034-2-2007 on a 15 kW 3 phase induction motor are presented.
Keywords :
electric resistance measurement; induction motors; standards; stators; windings; 3 phase induction motor; DC current measurement; anti-parallel diodes; bespoke temperature; direct online stator winding; resistance measurement; response voltages; standard polyphase induction machine; Diodes; Electrical resistance measurement; IEC standards; Induction machines; Job production systems; Measurement standards; Stator windings; Temperature control; Testing; Voltage; Efficiency; Induction motor; Measurement; Standard;
Conference_Titel :
Power Electronics and Applications, 2009. EPE '09. 13th European Conference on
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-4432-8
Electronic_ISBN :
978-90-75815-13-9
