Fast and Accurate Non-linear Model for Synchronous Machines Including Core Losses
Artikel i vetenskaplig tidskrift, 2024

This paper presents a fast and accurate state-space model for synchronous machines taking into consideration the machine geometry, material non-linearities and core losses. The model is first constructed by storing the solutions of multiple static finite element (FE) simulations into lookup-tables (LUTs) to express the stator flux linkages as functions of the state variables, i.e., the winding currents and the rotor position. Different approaches are discussed to include the core loss into the model. A novel approach is presented for constructing a pre-computed LUT for the core loss as a function of the state variables and their time derivatives so that the loss can be directly interpolated when time-stepping the state-space model. The Simulink implementation of the proposed core-loss model shows a good match with time-stepping FE results with a 120-fold speedup in computation. In addition, comparison against calorimetric loss measurements for a 150-kVA machine operating under both sinusoidal and pulse-width modulated voltage supplies is presented to validate the model accuracy.

state-space model

Couplings

lookup-tables

Core loss

Table lookup

State-space methods

Stator cores

Core loss

Rotors

synchronous machine

Mathematical models

Författare

Amr A. Abbas

Tampereen Yliopisto

Joonas Vesa

Tampereen Yliopisto

Hadhiq Khan

Tampereen Yliopisto

Hao Chen

Chalmers, Elektroteknik, Elkraftteknik

Yujing Liu

Chalmers, Elektroteknik, Elkraftteknik

Paavo Rasilo

Tampereen Yliopisto

IEEE Transactions on Energy Conversion

0885-8969 (ISSN) 15580059 (eISSN)

Vol. In Press

Ämneskategorier

Energiteknik

Datavetenskap (datalogi)

Styrkeområden

Energi

DOI

10.1109/TEC.2024.3394612

Mer information

Senast uppdaterat

2024-08-07