Grid Connection of a Converter Controlled Squirrel-Cage Induction Generator

Górski, D.; Balkowiec, Tomasz; Koczara, W.

doi:10.1109/icrera.2018.8566730

Cited by 9 publications

(6 citation statements)

References 16 publications

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“…A feeder simulator was developed in [14] in order to assess the IG influence on the PCC in case of grid connection, loading and disconnection. To decrease the inrush current specific to the grid connection process, a system consisting of a power electronic converter plus a controllable load was investigated in [15], while in Reference [16] a thyristor-based Soft-starter was employed. A three-phase IG can also be connected to a single-phase grid through an uncontrolled bridge rectifier plus a single-phase inverter [17].…”

Section: Introductionmentioning

confidence: 99%

Seamless Integration of an Autonomous Induction Generator System into an Inverter-Based Microgrid

Ion

Șerban

2019

Energies

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A control strategy for an autonomous induction generator (IG) system synchronization and seamless transfer to an inverter-based microgrid (MG) is presented in the current paper. The IG system control in autonomous mode is performed by a combination between a Voltage Source Inverter (VSI) and a Dump Load (DL). The MG consists of an MG leading inverter having on its DC side a supercapacitor-based energy storage system, two MG supporting inverters, and local loads. The paper presents the IG control part for the VSI-DL system, as well as the synchronisation algorithm that enables the smooth interconnection with the MG. An analysis of the IG impact on an islanded MG is also provided. Experimental validations accomplished on a complex laboratory test-bench have focused on the dynamic events associated with the IG system connection/disconnection to/from the MG and also on the MG response to a load being turned on and off when the IG operates connected to the MG. The obtained results have shown that the proposed synchronization algorithm ensures a seamless transfer for the IG system from autonomous to MG connected mode and vice-versa. Moreover, when a significant load transient occurs within the MG operation, the IG presence does not alter the MG stability.

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Section: Introductionmentioning

confidence: 99%

Seamless Integration of an Autonomous Induction Generator System into an Inverter-Based Microgrid

Ion

Șerban

2019

Energies

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“…Then, the converter is connected to the stator terminals and starts the building-up process of generator voltage. At this stage, the generator voltage amplitude equals the grid voltage amplitude, but the generator frequency differs from the grid frequency and depends on generator speed and rotor slip [16]. The grid and generator voltage vectors overlap periodically and the period equals…”

Section: The Proposed Methods Of Grid Connection Of the Inductionmentioning

confidence: 99%

“…The parallel-connected electronic converter, which usually satisfies the reactive power demand of an induction generator, may decrease an inrush current of the generator during grid connection transient [3]- [16]. When the power converter is permanently connected to the grid and the induction generator is connected separately as an unexcited machine, an inrush current is reduced to only about a few percent [3].…”

Section: Introductionmentioning

confidence: 99%

“…Another way of generator connection is possible, when the parallel power converter is connected to the generator terminals and the grid connection process is related to the whole set -induction machine and power converter. In such case, the generator is already excited and full synchronization can be reached, which reduces an inrush current completely [16]. This is obtained by additional breaking choppers and power resistors connected to the converter's DC-bus, in order to load the generator and to dissipate harvested energy.…”

Section: Introductionmentioning

confidence: 99%

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Asynchronous Grid Connection of a Cage Induction Generator Excited by a Power Electronic Converter

Goarski

Iwański

2021

IEEE Trans. Energy Convers.

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This article presents an analysis of grid connection of an excited induction generator, where an inrush current is significantly reduced and voltage drop in the local grid is eliminated. In the proposed method, generator connection to the grid is done at the moment when the generator voltage vector equals the grid voltage vector, but the generator frequency differs from the grid frequency. Excitation of the induction generator is provided by a power electronic converter, which is rated only on the rated reactive power of the generator. Moreover, when the generator is connected to the grid, the converter satisfies reactive power demand of an induction generator, according to the requirements from the distribution system operator. The simulation and laboratory tests were conducted with a 7.5 kW induction generator.

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“…In [33], there is a process of decreasing the inrush current during the connection of the squirrel cage induction generator to the distribution grid. An investigation of skew effect is presented by [34], whose work focuses on the steady-state and transient dynamics behavior of the squirrel cage induction generator in the power grid.…”

Section: Introductionmentioning

confidence: 99%

A Technical and Economic Project Analysis of Asynchronous Technology in Distributed Generation Using Methane Gas From Pig Farms

2020

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The focus of this paper is to study the asynchronous generator (generator of squirrel-cage induction), as an alternative distributed generation technology, in particular the driving of machines using methane gas from pig farms as their fuel. Pig farming has grown dramatically over recent years. This agroindustrial activity produces huge quantities of methane gas which is released into the atmosphere depleting the ozone layer, in addition to contributing to the greenhouse effect. When the subject is environmental concerns, methane is known to be many times more aggressive than carbon. Since the production of this gas is inherent to the pig farming industry, its effects can be mitigated by using it as fuel in an engine to drive an electricity generator, while adding value to the production chain.

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Grid Connection of a Converter Controlled Squirrel-Cage Induction Generator

Cited by 9 publications

References 16 publications

Seamless Integration of an Autonomous Induction Generator System into an Inverter-Based Microgrid

Seamless Integration of an Autonomous Induction Generator System into an Inverter-Based Microgrid

Asynchronous Grid Connection of a Cage Induction Generator Excited by a Power Electronic Converter

A Technical and Economic Project Analysis of Asynchronous Technology in Distributed Generation Using Methane Gas From Pig Farms

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