Comparative Analysis Between Distributed and Fractional Slot Concentrated Winding of a Wound Rotor Synchronous Machine

Virlan, Bogdan; Livadaru, Leonard; Munteanu, Adrian; Nacu, Ionut; Nastas, Ion; Simion, Alecsandru

doi:10.1109/sielmen59038.2023.10290796

2023 International Conference on Electromechanical and Energy Systems (SIELMEN) 2023

DOI: 10.1109/sielmen59038.2023.10290796

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Comparative Analysis Between Distributed and Fractional Slot Concentrated Winding of a Wound Rotor Synchronous Machine

Bogdan Virlan,

Leonard Livadaru,

Adrian Munteanu

et al.

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2024

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Methods for Determining Losses and Parameters of Cylindrical-Rotor Medium-Power Synchronous Generators

Komeza,

Dems

2024

Electronics

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This paper presents the analytical and numerical application of a method to determine the parameters and power losses in the core of two medium-power synchronous generators. These generators are used as emergency power sources powered by diesel engines, gas engines, and gas turbines. They cover peak electricity demand but can also be used in traction drives. This article presents a new numerical method for determining losses in the generator core based on the use of a time-stepping solution using the FEM method and calculating these losses using analytical formulas. In calculating the losses for the FEM method, approximations of the loss characteristics of the sheet were used with a wide range of induction values and frequencies. This method is specific to the solution used and was adapted from the authors’ previous work on losses in induction machines. A one-phase winding with alternating voltage was supplied to determine the basic parameters in the form of synchronous reactance. Also, an important novelty is the introduction of a new method of determining the saturation state of the magnetic circuit, which significantly affects the machine parameters. The obtained results were used in analytical calculations and implemented in a computer program that allows for the calculation of electromagnetic parameters, operating characteristics, and core losses, taking into account additional losses, total losses, and efficiency, as well as machine parameters in unsteady operating states and the current characteristics of a three-phase symmetrical short circuit at the machine terminals. The calculations obtained were verified experimentally by measurements of real machines.

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Methods for Determining Losses and Parameters of Cylindrical-Rotor Medium-Power Synchronous Generators

Komeza,

Dems

2024

Electronics

View full text Add to dashboard Cite

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Comparative Analysis Between Distributed and Fractional Slot Concentrated Winding of a Wound Rotor Synchronous Machine

Cited by 1 publication

References 27 publications

Methods for Determining Losses and Parameters of Cylindrical-Rotor Medium-Power Synchronous Generators

Methods for Determining Losses and Parameters of Cylindrical-Rotor Medium-Power Synchronous Generators

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