Electomagnetic Analysis of Synchronous Generator

Popovski, Pande; Veljanovski, Goran; Arapinovski, Blagoja; Atanasovski, Metodija

doi:10.1109/icest52640.2021.9483490

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…The electrical energy produced is a three-phase voltage with a 120° difference between each phase [8], [9]. A three-phase synchronous generator operates on the basis that the field coil on the rotor generates a direct current that induces a magnetic flux in the other field coils [10], [11]. The generator's speed is defined by Equation (1):…”

Section: Figure 1 Equivalent Circuit Of a Three-phase Synchronous Gen...mentioning

confidence: 99%

“…The magnetic field created by the field coil will revolve as the rotor does. This rotating field is then induced in the armature winding, causing a continuous change in the magnetic flux around the winding [11], [12]. Three types of loads can be connected to the generator, namely resistive, inductive, and capacitive loads.…”

Section: Figure 1 Equivalent Circuit Of a Three-phase Synchronous Gen...mentioning

confidence: 99%

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The effect of power factor on the performance of hydro power three-phase synchronous generator under inductive load

Arifin Wibisono,

Dimas Ragil Yanuardi,

Slamet Riyadi

2023

Int. J. Sci. Res. Arch.

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Three-phase synchronous generators have numerous advantages for power generation applications. One of their strengths is the ability to operate at varying speeds. Voltage generation in synchronous generators relies on an excitation system, which greatly influences voltage and frequency stability. This paper examines the loading of three-phase synchronous generators with inductive loads. The research includes simulation results and laboratory testing. To support the analysis with simulations, testing was conducted in the laboratory. To represent the prime mover, a DC motor was used as the initial driver, along with the excitation system. The test results indicate that adding resistive loads yields better outcomes in output voltage waveform formation. Resistive loads significantly impact the generator's speed and terminal voltage, thus requiring the precise operation for stability of a three-phase synchronous generator. Based on the outcomes of processing simulation data, doing laboratory tests, and analyzing processes from a hydropower plant it is found that a three-phase synchronous generator with resistive-inductive load produces better output voltage waveforms. The resistive load affects the formation of the synchronous generator's terminal voltage waveform, while the inductive load causes the current waveform to lag behind the terminal voltage. Additionally, the resistive load affects the decrease in generator speed, requiring adjustment of the armature current in the DC motor as the prime mover.

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Section: Figure 1 Equivalent Circuit Of a Three-phase Synchronous Gen...mentioning

confidence: 99%

Section: Figure 1 Equivalent Circuit Of a Three-phase Synchronous Gen...mentioning

confidence: 99%

The effect of power factor on the performance of hydro power three-phase synchronous generator under inductive load

Arifin Wibisono,

Dimas Ragil Yanuardi,

Slamet Riyadi

2023

Int. J. Sci. Res. Arch.

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Using of a single-phase synchronous multi-winding generator with permanent magnets for the power supply of an autonomous consumer

Котин

Иванов

2022

«Izvestiya vysshikh uchebnykh zavedenii. PROBLEMY ENERGETIKI»

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THE PURPOSE. Consider the existing ways of using electromechanical converters for power supply of an autonomous consumer. Conduct a comparative analysis of electromechanical converters, scenarios and conditions for their use in the power supply of an autonomous consumer. To develop a proposal to eliminate the shortcomings in existing models of synchronous generators in order to increase their controllability. To develop a mathematical description of a synchronous generator with magnetoelectric excitation from permanent magnets of a single-phase type with a simplified design as a universal example of the functioning of the entire proposed line of synchronous generators. Carry out mathematical modeling of the generator proposed for consideration in order to confirm the proposed method of regulating the generated parameters, such as current and voltage, without the need to change the generator shaft rotation speed.METHODS. When solving the problem, the method of describing an electric machine in a dq-coordinate system using a multi-winding description of the machine was used; to confirm the proposed control method, mathematical modeling with the SimInTech environment was used.RESULTS. The article describes the relevance of the topic, considers the features of the operation of various electromechanical converters for power supply of an autonomous consumer, indicates the conditions for the use of one type or another of the architects of the power supply system in conjunction with electromechanical converters. A line of synchronous generators with magnetoelectric excitation is proposed in order to improve their controllability, namely, the ability to regulate the output generated parameters.CONCLUSION. Using of the proposed synchronous generators with excitation from permanent magnets will allow for additional regulation of the generated parameters, thereby allowing either completely or partially to exclude additional semiconductor converting equipment, thereby reducing losses during the conversion of electrical energy. Moreover, it is possible to regulate the generated current and voltage discretely by two times increasing one of these values, this method of regulation depends on the design of the generator.

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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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Electomagnetic Analysis of Synchronous Generator

Cited by 3 publications

References 2 publications

The effect of power factor on the performance of hydro power three-phase synchronous generator under inductive load

The effect of power factor on the performance of hydro power three-phase synchronous generator under inductive load

Using of a single-phase synchronous multi-winding generator with permanent magnets for the power supply of an autonomous consumer

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

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