Comparative Study of the Transmission Characteristic of Unequal Compensated Inductive Power Supply Systems for Electric Vehicles

2015 ◽  
Vol 1 (3) ◽  
pp. 3-6 ◽  
Author(s):  
Benedikt SCHMUELLING
Keyword(s):  
Comparative Study ◽  
Electric Vehicles ◽  
Power Supply ◽  
Transmission Characteristic ◽  
Supply Systems ◽  
Inductive Power

A system for dynamic inductive power supply of electric vehicles on the road

2016 ◽  
Author(s):  
Johannes A. Russer ◽  
Marco Dionigi ◽  
Mauro Mongiardo ◽  
Franco Mastri ◽  
Alessandra Costanzo ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
Power Supply ◽  
The Road ◽  
On The Road ◽  
Inductive Power

A Comparative Study on the Effects of Power Supply Patterns in Microgrids for DC Powered Electrical Appliances

2014 ◽  
Vol 986-987 ◽  
pp. 167-171
Author(s):  
Siddharth Narayanan ◽  
Rajagopalan Badrinarayanan ◽  
Zhen Lu
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Comparative Study ◽  
Power Supply ◽  
Model Simplification ◽  
Dc Microgrids ◽  
Load Model ◽  
Bridge Rectifier ◽  
The Cost ◽  
Supply Systems

To increase the energy efficiency and reduce the cost, the DC-Microgrids will have a very promising future in the power supply systems. In this paper, two power supply patterns for modern appliances, the central rectifier pattern and the distributed rectifier pattern, are investigated and compared. A concept of equivalent efficiency of diode bridge rectifier for DC-powered appliances is introduced and then it is applied in the model simplification. A Curved-Load model is constructed which is based on the specific efficiency characteristics of diode bridge rectifier in a particular current range and the statistics for appliance’s energy consumption as a percentage of the total. Using the Curved-Load model, the comparison of two microgrid system models was conducted with the help of simulations using Ansoft Simplorer 9.0 aiming to examine the conversion efficiency of rectifier patterns.

scholarly journals A Comparative Study of S-S and LCCL-S Compensation Topologies in Inductive Power Transfer Systems for Electric Vehicles

Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1913 ◽  
Author(s):  
Yafei Chen ◽  
Hailong Zhang ◽  
Sung-Jun Park ◽  
Dong-Hee Kim
Keyword(s):  
Comparative Analysis ◽  
Comparative Study ◽  
Electric Vehicles ◽  
High Power ◽  
Power Transfer ◽  
Comparative Result ◽  
Inductive Power Transfer ◽  
Load Variations ◽  
Basic Characteristics ◽  
Inductive Power

In inductive power transfer (IPT) systems, series–series (S-S) and double capacitances and inductances–series (LCCL-S) compensation topologies are widely utilized. In this study, the basic characteristics of S-S and LCCL-S are analyzed and compared in the tuning state. In addition, considering the universality of detuning, and because the two topologies have the same secondary structures, the voltage and current stress on components, input impedances, voltage gains, and output powers of S-S and LCCL-S are mainly analyzed and compared in the detuning state, which is caused by variations in the secondary compensation capacitance. To compare the efficiency of the two topologies and verify the comparative analysis, comparative experiments based on a 2.4-kW IPT experimental prototype are conducted. The comparative result shows that the S-S compensation topology is more sensitive to load variations and less sensitive to secondary compensation capacitance variations than LCCL-S. Both in the tuning and detuning states, the efficiency of the S-S topology is higher in high-power electric vehicle (EV) applications, and the efficiency of LCCL-S is higher in low-power.

scholarly journals Battery Charger with Bidirectional Power Transmission

2021 ◽  
Vol 26 (1) ◽  
Author(s):  
Andrii V. Harnytskyi ◽  
Evgenii Volodymyrovych Verbytskii
Keyword(s):  
Electric Vehicles ◽  
Power Supply ◽  
Output Voltage ◽  
Power Transmission ◽  
Renewable Energy Sources ◽  
High Energy ◽  
Pause Duration ◽  
Soft Switching ◽  
Wide Range ◽  
Supply Systems

The gradual reduction in price of electric batteries contributes to their wider use in autonomous and centralized power supply systems as a backup source of electricity and increase the share of electric vehicles. In the paper the conditions for increasing the efficiency of electric vehicle batteries, in particular in the framework of the concept of V2G (Vehicle to Grid) as a drive for the organization of autonomous power supply systems are analyzed. It is shown that this is possible only with the simple integration of batteries into the system, flexibility, and a wide range of modes that have to be provided by unified charge-discharge devices. Such charging devices have to have such features: a wide range of input and output voltage parameters; correction of the input power factor; the ability to take the maximum power from renewable energy sources; high energy efficiency. A review of possible topologies for a charger with bidirectional power transmission and a bridge converter with soft switching of transistors at zero voltage, which has a high efficiency, galvanic isolation and the ability to correct the shape of the current. The modes of operation of the converter are analyzed and conditions of soft switching is obtained. It is shown that soft switching is valid for current that is not less than minimal one. Efficiency of the converter with soft commutation is compared with a similar converter with rigid commutation of transistors. It is shown that static losses in converter with soft commutation it higher than in the rigid one. So, the proposed converter should be used if the increase in static losses is compensated by the lack of dynamic losses. Additional feature of the converter is that the regulation of the output voltage of the converter with soft switching is carried out according to the law of frequency-pulse modulation with a constant pause duration, where the pause duration is determined by the period of resonant processes of the converter. The model of the converter in Matlab Simulink is built and it is shown that the efficiency of the proposed converter topology is 10-15% higher, which together with the possibility of sinusoidal current with THD ≈ 20% and two-way transmission energy indicates the feasibility of its use as a charger for electric vehicles under the concept of V2G. However, it should be noted that the use of LCL filter creates a phase shift between voltage and current and degrades the THD value. To improve the shape, it is possible to use specialized laws of modulation [or to use modular converters, which allow to obtain a continuous current shape and reduce the volume of the filter.

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