Title :
Experimental determination of synchronous machines reactances from DC decay at standstill
Author :
Groza, V. ; Biriescu, M. ; Liuba, Gh ; Cretu, V.
Author_Institution :
Sch. of Inf. Technol. & Eng., Ottawa Univ., Ont., Canada
Abstract :
Estimating parameters of high power synchronous machines from steady state or transient AC operational tests requires a great deal of electrical power. This paper presents a procedure and its implementation for the determination of synchronous machines parameters from DC decay time-domain data acquired from standstill test measurements. The direct-axis and quadrature-axis reactances are indirectly found by processing the response of a synchronous machine at standstill to a step signal. This testing technique reduces the required power and minimizes the testing time, but presents a limited precision. The accuracy of the estimation of the machine parameters is improved by using floating-point quantization. Experimental results of a synchronous machine are finally presented to illustrate the applicability of this method
Keywords :
computerised instrumentation; data acquisition; electric machine analysis computing; electric reactance measurement; floating point arithmetic; machine testing; synchronous machines; time-domain analysis; DC decay; direct-axis reactance; floating-point quantization; quadrature-axis reactance; synchronous machine; synchronous machines parameters; synchronous machines reactances; time-domain data; transient AC operational tests; Circuit testing; Current measurement; Machine windings; Parameter estimation; Power measurement; Stators; Steady-state; Synchronous machines; Time domain analysis; Voltage;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2001. IMTC 2001. Proceedings of the 18th IEEE
Conference_Location :
Budapest
Print_ISBN :
0-7803-6646-8
DOI :
10.1109/IMTC.2001.929541