Asynchronous Operating Ability of Turbo Generator With Different Field Discharge Resistors

Xu, Guorui; Hu, Peidong; Song, Meihong; Wang, Zhenzhen; Zhao, Haisen; Zhan, Yang

doi:10.1109/tia.2022.3146111

Cited by 6 publications

(1 citation statement)

References 18 publications

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“…However, more research has been carried out on the rationality of turbine power generation systems [8], [9], [10], and less on the structure of the generator body. In reality, nevertheless, the harsh operating environment of the turbocharger places high demands on the generator.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Topology and Electromagnetic Characteristics of Novel Stator Partitioned Axial Flux Disk Generator for Vehicles

Shi

Liu

et al. 2023

IEEE Access

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Internal combustion engines emit high-temperature, high-pressure, and high-speed exhaust gases, resulting in wasted energy and low thermal efficiency. In order to recover the available residual energy in the exhaust gas, this paper proposes a new topology of the disk-type axial flux stator-excited doubly salient generator (AFSDSG) with partitioned stator suitable for high-temperature and high-speed operation. Based on the analysis of the above generator inductance characteristics, the influence mechanism of three pole-slot structures on the induced electromotive force (IEMF) of the armature winding is clarified, the equivalent magnetic circuit method is used to analyze the influence of different winding arrangements on the no-load performance of the generator, and the principles of pole-slot structure optimization and winding arrangement are summarized. The finite element software is used to model and simulate different configuration. After focusing on the analysis of transient characteristics such as inductance, armature winding IEMF, and air-gap flux, it is concluded that different from the conventional pole-slot structure and winding connection method make that only the overlapping area of the stator and the rotor changes linearly can produce a constant voltage, the winding arrangement of Winding Partition Excitation Span 2 has a high IEMF amplitude value and low harmonic content. Finally, the prototype of a three-phase 12/8-pole was trial manufactured and tested. The consistency of the simulation results and experimental results is verified the innovation and feasibility of the new topology proposed in this paper.

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Section: Introductionmentioning

confidence: 99%

Analysis of the Topology and Electromagnetic Characteristics of Novel Stator Partitioned Axial Flux Disk Generator for Vehicles

Shi

Liu

et al. 2023

IEEE Access

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Variable parameter practical model of synchronous generator for precise simulation of power system

Yuan

et al. 2022

IET Generation Trans & Dist

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The model of synchronous generator (SG) plays an important role in the simulation of power system and planning of power grid. With the constant parameter practical model (CPPM), it is difficult to consider the time‐varying characteristic of the parameters affected by the complex non‐linear factors, such as the saturation, distortion, skin effect and various spatial harmonics; thus, it cannot guarantee the precision of the simulation. In this paper, a variable parameter practical model (VPPM) of SG is proposed by coupling the CPPM with the three‐dimensional parameter database and the parameter addressing model. The three‐dimensional parameter database containing the steady‐state, transient and sub‐transient reactances and time constants is established with the terminal voltage, active power and reactive power as the variables. The parameters of the VPPM are selected through linear inter‐polation according to the operating states of the generator. In order to verify the precision of the VPPM, a single‐machine infinite system and a real power system with 204 buses and 107 generators are simulated. The result indicates that the VPPM is more accurate than the CPPM, and the stability limit and damping ratio calculated by the VPPM are larger than that by the CPPM. The study can provide important support for the precise simulation of the power system.

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Loss Distribution in Stator End Region of Turbo-generators During Asynchronous Operation after Loss of Field

Wang

Zhan

et al. 2022

2022 IEEE Industry Applications Society Annual Meeting (IAS)

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Asynchronous Operating Ability of Turbo Generator With Different Field Discharge Resistors

Cited by 6 publications

References 18 publications

Analysis of the Topology and Electromagnetic Characteristics of Novel Stator Partitioned Axial Flux Disk Generator for Vehicles

Analysis of the Topology and Electromagnetic Characteristics of Novel Stator Partitioned Axial Flux Disk Generator for Vehicles

Variable parameter practical model of synchronous generator for precise simulation of power system

Loss Distribution in Stator End Region of Turbo-generators During Asynchronous Operation after Loss of Field

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