Design and implementation of a high-efficiency on- board battery charger for electric vehicles with frequency control strategy

Kim, Jong-Soo; Choe, Gyu-Yeong; Jung, Hye-Man; Lee, Byoung-Kuk; Cho, Youngjin; Han, Kyung-Lyong

doi:10.1109/vppc.2010.5729042

Cited by 27 publications

(9 citation statements)

References 5 publications

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“…Consequently, simulated responses from these models were used to derive the data used in curve fitting approaches for both the static (using steady-state values) and dynamic (using time domain responses) load models. The slow charge approach (approach A) was based on a diode rectifier and a DC/DC converter [30,31] while the fast charge approach (approach B) utilised a three-phase full bridge converter and a DC/DC converter [10,32]. Approach A was characterised by simplified control structures, which made it popular for earlier EV charging stations-such as small residential chargers (e.g., level-2, 7.4 kW).…”

Section: Detailed Ev Charger Modelsmentioning

confidence: 99%

“…Charging approach A consisted physically of two main parts-a diode rectifier and a DC/DC converter, as depicted in Figure 3. This approach is commonly found in slow charging and sometimes low-power designs [9,31], e.g., electric scooters. A large number of circuit topologies and control methods have been developed for EV and plug-in hybrid electric vehicle (PHEV) battery chargers.…”

Section: Approach A-typical Ev Slow Chargermentioning

confidence: 99%

“…Power factor correction (PFC) control aims to keep the power factor close to 1 and can also be implemented in charger structures. This is done by appropriately controlling the boost converter between the diode rectifier and the full bridge DC/DC converter [9,31].…”

Section: Approach A-typical Ev Slow Chargermentioning

confidence: 99%

“…Based on the structure depicted in Figure 3, several technologies can be used for each part; for example, a diode bridge can be used on the AC/DC part [11,13,35,36] due to its simplified structure. To construct a single-phase residential charging station (e.g., 7.4 kW), PFC controllers could be realised based on control loop strategies as defined in [30,31,37]. A large number of circuit topologies and control methods have been developed for EV and plug-in hybrid electric vehicle (PHEV) battery chargers.…”

Section: Approach A-typical Ev Slow Chargermentioning

confidence: 99%

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Electric Vehicle Charger Static and Dynamic Modelling for Power System Studies

2021

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Electric Vehicles (EVs) are becoming increasingly available and are expected to be a large part of the load in future power systems. EV chargers are a relatively new type of load and are mainly interfaced with the grid through power electronics. It is therefore important to investigate the impact they have on power system dynamic behaviour. In this paper, two detailed EV charger models (representing a typical slow and fast charger) were investigated. The aim was to test the capability of standard static—and more importantly, dynamic—load models, commonly used in power system studies, to represent the static and dynamic behaviour of EV chargers. Different control parameter settings for two types of EV chargers were investigated, as were the limits of standard power system dynamic load model structures’ accurate representation. Typical parameter sets have also been provided for cases where proper representation was possible.

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Section: Detailed Ev Charger Modelsmentioning

confidence: 99%

Section: Approach A-typical Ev Slow Chargermentioning

confidence: 99%

Section: Approach A-typical Ev Slow Chargermentioning

confidence: 99%

Section: Approach A-typical Ev Slow Chargermentioning

confidence: 99%

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Electric Vehicle Charger Static and Dynamic Modelling for Power System Studies

2021

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“…Furthermore, we validated the examination of possible charging rectifier set-ups by simulations. [3] Figure2: Circuit pattern of the EV connection to the grid with functional disorder in electric vehicle…”

Section: Possible Fault Currents With Charging Rectifiersmentioning

confidence: 99%

Having a Cutting Point - Testing and Development Environment at TU Dortmund University

Aldejohann

Horenkamp

Rettberg

et al. 2013

WEVJ

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This paper presents the technology and testing platform for interoperable e-mobility, infrastructure and power grids at TU Dortmund University. That environment allows to emulate several power grid states and to analyse the behaviour of charging station and EV regarding to both electrical and ICT aspects. Using this technology platform we developed an alternative method for Residual Current Detection with DC components in electrical vehicle charging. Standard methods are not very well suited for these requirements, because they are very expensive and need a manual reset. The method which is presented in this paper detects the fault current by using an AC/DC summation current transformer in the electric vehicle. The fault current is announced by a fault state. A control unit in the charging station detects the fault state which is transmitted by using the control pilot. The cutoff is done by the already existing charging contactor which is included in the charging station. The fault state is transmitted by using the control pilot. The here presented protection method has a comparable security level to typically used protection devices. It allows cost savings by a factor up to 50. It can be used also for cutoff by detecting an isolation failure.

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