Electric vehicle charging station microgrid providing unified power quality conditioner support to local power distribution networks

Zhong, Yajiao; Xia, Mingchao; Chiang, Hsiao‐Dong

doi:10.1002/etep.2262

Cited by 21 publications

(8 citation statements)

References 50 publications

(79 reference statements)

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“…• Challenges in terms of power quality are tackled by the design of a new charging connector or a completely new design of a charging station with power quality compensation for electric vehicles as in Tanaka et al (2012), Restrepo et al (2018), Vahedi and Al-Haddad (2016), Zhong et al (2017), Yong et al (2015). In contrast, we solve the problem using the off-the-shelf hardware and software and validate our proposed architecture with hardware in the loop simulation.…”

Section: Approaches Of Charging Managementmentioning

confidence: 99%

Enhancing power quality in electrical distribution systems using a smart charging architecture

et al. 2018

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The electrification of the mobility sector comes with multiple challenges such as the lack of information on when, where, how long and how fast charging processes of electric vehicles will take place. In order to keep up with increasing power demand of charging processes, besides better predictions also the active control of charging processes will be necessary to minimize infrastructure costs. This work deals with a realtime mechanism for supporting the Power Quality (PQ) in electric distribution grids in terms of congestion and voltage management. In the paper, we propose a distributed smart charging approach that considers real-time conditions of the distribution grid provided by an event-driven architecture that collects data from different points in the grid. Our approach adopts the traffic light model, which allows smooth changing of the charging power to avoid drastic changes of the grid state. In order to be ready for real-world application, the algorithm is validated by a series of experiments on two setups: Pure software (co-)simulation and Power Hardware In the Loop (PHIL) where physical charging stations and electric cars are controlled in a laboratory setup.

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Section: Approaches Of Charging Managementmentioning

confidence: 99%

Enhancing power quality in electrical distribution systems using a smart charging architecture

et al. 2018

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“…Apart from this, integrating these DGs requires supply voltage quality to be maintained within certain tolerance band, which is violated on occurrence of faults on grid side. The UPQC can maintain supply voltage quality for fault ride through operation of DGs such as wind and solar PV and can be used as central power electronic converter in microgrid …”

Section: Introductionmentioning

confidence: 99%

“…The UPQC can maintain supply voltage quality for fault ride through operation of DGs such as wind 2 and solar PV 3 and can be used as central power electronic converter in microgrid. 4,5 UPQC DG is a particular configuration of UPQC in which a DG is connected at the DC link via suitable power electronic interface. 6 UPQC DG can simultaneously compensate for existing power quality issues and smoothly integrate renewable sources into grid without using DG inverter.…”

Section: Introductionmentioning

confidence: 99%

A new SRF-based power angle control method for UPQC-DG to integrate solar PV into grid

Patel

Mathur

Bhanot

2018

Int Trans Electr Energ Syst

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Summary In this paper, a new synchronous reference frame theory–based power angle control (PAC) method for unified power quality conditioner with distributed generation (UPQCDG) is proposed for effective grid integration of solar PV. In UPQCDG, shunt active power filter (APF) feeds power from distributed generator to load, apart from supplying reactive power demand, which leads to increase in VA burden, hence its rating. Power angle control method aims at effective utilization of series and shunt APFs through sharing of reactive power to reduce VA burden on shunt APF. Proposed PAC method is based on instantaneous three‐phase power estimation technique, which is simple and robust and utilizes already available measurements of UPQCDG. Performance of proposed system is tested in the presence of nonlinear and reactive loads with solar PV generation system. Dynamic performance of system is studied during grid disturbances such as voltage sag and swell, solar irradiation variation, and change in load. Effectiveness of proposed method is validated using real‐time simulation performed in Opal‐RT, in which electrical circuit of UPQCDG is simulated on FPGA computation engine with submicrosecond time step to emulate real hardware closely.

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“…To meet the environmental concerns and power quality issues, EVs can be utilized along with renewable power source like wind and solar power in on‐board and off‐board applications. In off‐board charging, particularly in commercial installations (Level 3 charging), EV batteries are charged with the power quality indices meeting the relevant standards, using modified unified power quality conditioner . The plug‐in hybrid electrical vehicle batteries are employed in Aly et al and Hou et al to mitigate the voltage fluctuations of the network fed by solar power, using a coordinated control strategy and regulation‐based algorithm.…”

Section: Introductionmentioning

confidence: 99%

Bidirectional converter for electric vehicle battery charging with power quality features

Ramaiaha

Maurya

Arya

2018

Int Trans Electr Energ Syst

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Summary The electric vehicle promotion in the backdrop of environment and climate issues is very important. In this paper, bidirectional converter for an electric vehicle battery charging along with features to mitigate the harmonics and reactive power in a residential installation is presented. It consists of adaptive transverse filter for the detection of fundamental component of the load current. The additional tasks are assigned to an electric vehicle charger for power quality improvement. This leads to reduction in cost for utility and a revenue generating scheme for the vehicle owner. Thus, the power quality indices are evaluated for the bidirectional interface (inherent to the on board power electronic equipment of the vehicle) in charging and discharging modes of the battery. The performance of the proposed converter is validated with the prototype system of same specifications. The performance results are obtained during charging and discharging modes with steady‐state and dynamic conditions.

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Electric vehicle charging station microgrid providing unified power quality conditioner support to local power distribution networks

Cited by 21 publications

References 50 publications

Enhancing power quality in electrical distribution systems using a smart charging architecture

Enhancing power quality in electrical distribution systems using a smart charging architecture

A new SRF-based power angle control method for UPQC-DG to integrate solar PV into grid

Bidirectional converter for electric vehicle battery charging with power quality features

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