Software for Testing Alternators of Heavy-Duty Trucks and Cars Perm State Technical University

Format:

Conference/Event

Author/Creator:

Lyubimov, Lyubimov, author.

Contributor:

Belyaev, Nikolay

Gladyshev, Sergey P.

Istselemov, Dmitriy

Conference Name:

SAE 2012 World Congress & Exhibition (2012-04-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

Heavy-duty trucks and self-propelled platforms are widely spreadfor the purpose of transportation of heavy and bulky loads. Powerunits of these vehicles consist of synchronous electric generators(alternators) driven by diesel engines. The generator supplieselectricity to each motor-wheel of the vehicle and to all itssystems. Alternators are also used in cars' and trucks'electric systems to supply their electric and electronic devices(e.g., headlights, safety systems, et cetera). Substantial reserves ofproduction and quality improvement of such alternators are hiddenin their tests technique improvement. In this paper, the softwareis designed for mobile and stationary test stands of thealternators. The software was created using "LabVIEW"development system. It is designed to be used with "NationalInstruments®" hardware. By manually or automatically, thesoftware allows receive: the no-load characteristic, the no-loadloss characteristic, the short-circuit characteristic, theshort-circuit loss characteristic, the V curves characteristic andthe load angle characteristic. It also allows to determine static(right up to efficiency) and dynamic parameters during the tests.The software consists of six virtual instruments (VIs) based onspecific algorithms which have been developed under the leadershipof the author of this paper. They include special adaptivealgorithm of sliding trigonometric interpolation which aim is tofilter noise of the input signals and draw curves for steady-stateand transient processes, and combined optimizing algorithm. That isneeded for reliable determination of the dynamic parameters basedon the results of the sudden short circuit test of the synchronousgenerator. Nonlinear parameters (time constants) are determined byusing the alternating-variable descent method. Linear parameters(initial values of transient processes) are determined analyticallyat each step of nonlinear parameters optimization using earlierderived formulas. The software is considerably extended forstationary test stands, additionally based on "NI PXI"programmable logic controller and static thyristor exciter withmicro-integrated system (e.g., "Simoreg DC Master"). Inthe first place, it is due to the extra VI, which allows to cuttime of receiving machine's characteristic in automation mode.The VI has a stator voltage control loop with PID controller whichprovides significant forcing of the field with a desired value ofthe overshoot. The algorithm optimization for PID control is alsoincluded in the VI.The software for receiving characteristics and determination ofstatic and dynamic synchronous machines' parameters was testedby using simulated and also real information. The program testsshow that the error in determination of parameters will not exceed5% for the noise level of 30% of the useful signal (stator windingvoltage).Though the software was designed to be used with alternators, italso can be used at test stands for synchronous motors andcondensers

Notes:

Vendor supplied data

Publisher Number:

2012-01-0022

Access Restriction:

Restricted for use by site license