Analysis of Power Converter Losses in Vector Control System of a Self–Excited Induction Generator

Bašić, Mateo; Vukadinović, Dinko; Polić, Miljenko

doi:10.2478/jee-2014-0010

Cited by 5 publications

(5 citation statements)

References 30 publications

(39 reference statements)

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“…By contrasting the created FL voltage controllers' performance with that of the optimally tuned traditional PI controller, their effectiveness is assessed. Various combinations of rotor speed, load, and DC voltage are analyzed on both an experimental and simulation level [23].…”

Section: Seig; Nonlinear Control; Predictive Control; Ripples; Dynami...mentioning

confidence: 99%

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Dynamic Performance Enhancement of a Self-Excited Induction Generator Connected to the Grid Using an Effective Control Algorithm

Saleh,

Diab,

El-Gaafary

et al. 2023

IJRCS

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The current study aims to present a comprehensive analysis of a control technique used for improving the dynamic performance of a grid connected self-excited induction generator (SEIG). All components in the control system are modelled and explained in details. The management of SEIG operation is achieved through controlling the machine side converter using a new formulated predictive voltage control scheme (PVC). The proposed (PVC) is compared to field oriented control (FOC), model predictive current control (MPCC) and model predictive direct torque control (MPDTC) systems. MPDTC and MPCC have several drawbacks like high ripple, high load commutation, and using a weighting factor in their cost function, While FOC systems depend on machine parameters for variable estimation factors, need to use PI regulators and co-ordinate transformations, which complicate the system and slow down the dynamic response. The results obtained indicate that the proposed PVC is effective, as the ripples are reduced by 43% when compared to the MPDTC-used one and by 30% when compared to MPCC. Additionally, PVC's time response is less than that of the FOC by 15%, MPCC by 9%, and MPDTC by 4%. Furthermore, PVC produces 38% fewer commutations than MPCC and 40% fewer commutations than MPDTC. Consequently, the generator's efficiency and dependability both increased as a result of its better performance.

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Section: Seig; Nonlinear Control; Predictive Control; Ripples; Dynami...mentioning

confidence: 99%

“…𝑖 𝑞𝑓,𝑘+1 = 𝑖 𝑞𝑓,𝑘 + ( 𝑑𝑖 𝑞𝑓,𝑘 𝑑𝑡 )𝑇 𝑠 (23) where the two components ( 𝑑𝑖 𝑑𝑓,𝑘 𝑑𝑡 )and ( 𝑑𝑖 𝑞𝑓,𝑘 𝑑𝑡 ) can be obtained from equations ( 18) and ( 19). According to the grid scheme in Fig.…”

Section: Control Technique For Grid Side Convertermentioning

confidence: 99%

Dynamic Performance Enhancement of a Self-Excited Induction Generator Connected to the Grid Using an Effective Control Algorithm

Saleh,

Diab,

El-Gaafary

et al. 2023

IJRCS

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“…When the load is in a state close to short circuit and idle running, the power naturally drops. The voltage in the case of a short circuit also decreases, and in idle running, it increases, but not as much as with the conventional circuits of autonomous inverters [7,[19][20][21][22]. These results have been used to plot the load characteristic of AI with ED in case of battery charging.…”

Section: Experimental Investigationsmentioning

confidence: 99%

Flexibility of Wireless Power Transfer Charging Station Using Dynamic Matching and Power Supply with Energy Dosing

Madzharov

Hinov

2019

Applied Sciences

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The scientific and applied problems discussed in this paper are related to the development of a wireless charging station using an inductive power transfer (IPT) module power supply with energy dosing and dynamic matching. A computer simulation and an experimental study allowed the authors to define the ranges of the parameter variation of the equivalent load and to design the best matching so that maximum energy transfer is efficiency achieved. The proposed principle of energy control provides highly reliable and a flexible charging station even with a simplified system of automatic control and fault protection. A prototype charging station is developed and built to supply an inductive power transfer system that delivers 30–35 kW power over an air gap between transmitting and receiving parts measuring 50–200 mm and with a horizontal misalignment of ±200 mm. The results showed that the system can transfer the specified electrical power with about 82–92% efficiency and that the IPT module and its dynamic matching during charging exhibited a high degree of stability under a misaligned (x-y-z) condition and battery state of charge.

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“…Due to the increase of power electronic converters in different devices, an especially important factor for optimizing converters is power quality, which can be described in terms of its thermal characteristics. Indeed, previous researches have clarified the relationship of converter performance and quality in terms of heat loss [2][3][4]. Furthermore, Usui and Ishiko presented a simple approach for the thermal design of an IGBT module practised only in steady state operation [5].…”

Section: Introductionmentioning

confidence: 99%

Reliability evaluation of buck converter based on thermal analysis

Mojibi

Radmehr

2019

Informacije MIDEM

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The design, which is based on the concept of reliability, is impressive. In power electronic circuits, the reliability design has been shown to be useful over time. Moreover, power loss in switches and diodes plays a permanent role in reliability assessment. This paper presents a reliability evaluation for a buck converter based on thermal analysis of an insulated-gate bipolar transistor (IGBT) and a diode. The provided thermal analysis is used to determine the switch and diode junction temperature. In this study, the effects of switching frequency and duty cycle are considered as criteria for reliability. A limit of 150°C has been set for over-temperature issues. The simulation of a 12 kW buck converter (duty cycle = 42% and switching frequency = 10 kHz) illustrates that the switch and diode junction temperature are 117.29°C and 122.27°C, respectively. The results show that mean time to failure for the buck converter is 32,973 hours.

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Analysis of Power Converter Losses in Vector Control System of a Self–Excited Induction Generator

Cited by 5 publications

References 30 publications

Dynamic Performance Enhancement of a Self-Excited Induction Generator Connected to the Grid Using an Effective Control Algorithm

Dynamic Performance Enhancement of a Self-Excited Induction Generator Connected to the Grid Using an Effective Control Algorithm

Flexibility of Wireless Power Transfer Charging Station Using Dynamic Matching and Power Supply with Energy Dosing

Reliability evaluation of buck converter based on thermal analysis

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