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Frequency-domain identification and parameter estimation methods are well established and commonly applied for commissioning and diagnostics purposes in electric drives. In this paper, the feasibility of a recursive least squares parameter estimation algorithm from frequency-domain observations is studied. The identification problem is treated from two different perspectives: first, by estimating...
An electrical and mechanical design process for a traction motor in a hybrid bus application is studied. Usually, the design process of an electric machine calls for close cooperation between various engineering disciplines. Compromises may be required to satisfy the boundary conditions of electrical, thermal, and mechanical performances. From the mechanical point of view, the stress values and the...
This paper presents a novel method to generate surface dynamometer cards of a sucker rod pump by applying torque and rotational speed estimates of a variable speed induction motor drive and a pumping process identification run.
This paper discusses dynamic behavior, stability and performance issues of the mechanical-level hardware-in-the-loop (MHIL) simulation. A special interest is in the cases where a real-time multi-body mechanics simulator is used to produce load dynamics to HIL hardware. The transfer functions describing the HIL system dynamics are created and presented. The analysis using transfer functions, the simulation...
This paper analyzes the functionality of a sensorless traction control system for hydrid electric vehicle. The traction control system was developed using a multibody dynamics simulator, and it is based on a fuzzy logic controller. The system is introduced and the functionality is then verified by using an experimental vehicle. Simulation results from the multibody dynamics simulator and measurements...
Designing the drive train for a hybrid working machine necessitates totally new methods compared to traditional diesel operated working machine design as dimensioning the diesel, the energy storage and the electric drive is much more complicated than just selecting the diesel according to the peak power demand as in traditional ICE drives. Preparing a prototype is a time and other resources consuming...
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