Robust Observer Design for Sensorless Voltage and Frequency Control of a Doubly Fed Induction Generator in Standalone Mode

Mondal, Prosenjit; Malakar, Mridul Kanti; Tripathy, Praveen; Krishnaswamy, Srinivasan; Saha, Ujjwal K.

doi:10.1109/tec.2021.3126779

Cited by 9 publications

(3 citation statements)

References 25 publications

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“…The P I controller gains K p and K i are chosen through empirical analysis. Therefore, the P I controller uses the speed error as an indicator to provide the required voltage amplitude v deviation, for the reason that the linear relation between v and speed ω as (14). Furthermore, since the voltage amplitude is controllable, the SPMSG can actually operate with MPE.…”

Section: Mo T O Rmentioning

confidence: 99%

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Simplified Current Sensorless Maximum Power Extraction for Wind Energy Conversion Systems

2022

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The penetration of wind energy conversion systems (WECSs) have been substantially expanded over the last few years. Maximum Power Extraction (MPE) is of the most efficient and reliable techniques for controlling the power converter of the generator. This research aims to present a simplified MPE that retains the benefits of the conventional MPE while significantly reducing the control loop complexity. By taking into account the wind velocity and disturbances, the proposed approach reformulates machine equations and controls the voltages and currents on dq-plane to drive the wind turbine at optimum performance. Furthermore, it does not require current and voltage measurements and waives the need for intricate tuning operations. The proposed simplified MPE controller's speed and power tracking performances are assessed through many simulations and experimental tests in various scenarios, and the results are compared to the vendor's datasheets as well as the field-oriented control method to prove its excellence.INDEX TERMS maximum power extraction, voltage source converter, variable speed wind turbine. NOMENCLATURE A. LIST OF ACRONYMS

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Section: Mo T O Rmentioning

confidence: 99%

“…Also, their active and reactive powers can be controlled separately to some levels. DFIGs, on the other hand, have a weak fault-crossing capability and require more components (such as gears and slip rings) [4], [6], [10]- [14].…”

mentioning

confidence: 99%

Simplified Current Sensorless Maximum Power Extraction for Wind Energy Conversion Systems

2022

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“…The partially rated power converter can be used to control the active and reactive powers injected into the grid [10]. Direct power control strategy [11], [12] and sensorless control techniques [13] could also be implemented. The reduction in the converter rating reduces the cost and size of the converter and the filter.…”

Section: Introductionmentioning

confidence: 99%

Optimal Gearbox Ratio to Minimize the Power Converter Ratings in DFIG-Based Type-3 Wind Turbines

Hussain

2023

IEEE Access

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Type-3 wind turbines based on the doubly-fed induction generator with a partial-scale power converter are commonly implemented in wind energy conversion systems. This paper investigates the effects of the rated slip and, thus, the gearbox ratio of the wind turbine on the ratings of the partial-scale power converter. Three design methods are proposed to select the optimal rated slip and gearbox ratio. The first design method minimizes the converter's rated power compared to the system's rated power. The analysis showed that a rated slip of −11.84% will minimize the converter ratings. The second design method is based on selecting the rated current of the converter, while the third design method aims to maximize the power produced at low wind speeds. The three proposed design methods are analyzed and compared to the conventional design method for a 2 MW wind energy conversion system. Simulation results for the complete system were performed where the dynamics in the wind speed and the thermal model of the Silicon-Carbide MOSFET power converter are considered. The simulation results verified the effectiveness of the proposed methods. Using the first proposed method, the power converter rating is only around 10% of the rated power. The third proposed method can be used to maximize the power produced at low wind speeds to maximize the annual energy production.INDEX TERMS Doubly fed induction generators, partial-scale power converters, power electronics, wind energy conversion systems.

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Demonstration of the High Efficiency/Power Density Grid-Tied Converters

Zhou,

Preindl

2024

Power Electronics and Power Systems

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Robust Observer Design for Sensorless Voltage and Frequency Control of a Doubly Fed Induction Generator in Standalone Mode

Cited by 9 publications

References 25 publications

Simplified Current Sensorless Maximum Power Extraction for Wind Energy Conversion Systems

Simplified Current Sensorless Maximum Power Extraction for Wind Energy Conversion Systems

Optimal Gearbox Ratio to Minimize the Power Converter Ratings in DFIG-Based Type-3 Wind Turbines

Demonstration of the High Efficiency/Power Density Grid-Tied Converters

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