Transformative Role of Silicon Carbide Power Electronics in Providing Low-cost Extremely Fast Charging of Electric Vehicles

Deb, Naireeta; Singh, R.; Bai, Hua

doi:10.1109/icdcm50975.2021.9504653

Cited by 11 publications

(9 citation statements)

References 4 publications

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“…Due to lower cost of photovoltaics and batteries, high voltage DC (HVDC) transmission is playing a key role in the use of green electric power at the scale of 10.5 GW [13]. [14] As shown in Figure 1, for charging electrical vehicles, the green electrical power generated by solar and or wind and stored in batteries is wasted in several DC to AC and AC to DC conversion steps in current high voltage AC (HVAC) transmission. Even for existing HVDC transmission illustrated in Figure 1, the DC power is first converted to AC power and then converted back to DC power.…”

Section: Importance Of DC Power Charging Infrastructure For Xfcmentioning

confidence: 99%

An Analysis of SiC Power Electronics Implementation in Green Energy Based Extremely Fast Charging

Deb¹,

Singh²

2022

J. Engg. Res. & Sci.

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Existing extremely fast charging (XFC) of electrical vehicles (EVs) is based on silicon power electronics and internal conversion of AC power into DC power. In this paper it has been shown that silicon carbide power electronics and the use of DC power source in the design of XFC of EVs has many distinct advantages over current XFC of EVs. Silicon carbide power electronics provide reduction of charging time, higher power conversion efficiency, size reduction of heat sink and improved battery's state of health. The use of larger size silicon carbide wafers will further reduce the cost of power electronics based on silicon carbide. Use of green energy sources (solar and wind) and lithiumion batteries for electrical power storage can provide end to end DC power network. Such networks combined with silicon carbide based XFC of EVs can play a revolutionary role in saving green electrical and provide reduced of charging of EVs. This paper reports almost 50% reduction in power losses by using Silicon Carbide DC technology. End to end DC power networks combined with SiC based XFC of EVs can play a revolutionary role in solving climate emergency.

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Section: Importance Of DC Power Charging Infrastructure For Xfcmentioning

confidence: 99%

An Analysis of SiC Power Electronics Implementation in Green Energy Based Extremely Fast Charging

Deb¹,

Singh²

2022

J. Engg. Res. & Sci.

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“…The block diagram of DC extremely fast charger is shown in Figure 1 [14] which is connected to the grid. Since our existing electricity infrastructure is based on AC, components shown in blue color within red square are required to convert AC input of the grid to DC input power of XFC.…”

Section: Background Informationmentioning

confidence: 99%

“…Due to higher thermal conductivity, silicon carbide devices need smaller heat sink and provide higher system reliability. The weight and load of XFC equipment can be reduced using SiC devices [14]. As the need for cooling decreases, and power density increases, it will reduce charging time as well [14], half the time is estimated in charging for the same power level compared to Si devices.…”

Section: Transformative Role Of Silicon Carbide In Dc-fast Chargingmentioning

confidence: 99%

“…The weight and load of XFC equipment can be reduced using SiC devices [14]. As the need for cooling decreases, and power density increases, it will reduce charging time as well [14], half the time is estimated in charging for the same power level compared to Si devices. The potential for growth of electrification of transportation is promising by using SiC devices for XFC.…”

Section: Transformative Role Of Silicon Carbide In Dc-fast Chargingmentioning

confidence: 99%

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A Review of Extremely Fast Charging Stations for Electric Vehicles

et al. 2021

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The expansion of electric vehicles made the expansion of charging infrastructure rudimentary to keep up with this developing technology that helps people in a myriad of ways. The main drawback in electric vehicle charging, however, is the time consumed to charge a vehicle. The fast charging of electric vehicles solves this problem thus making it a lucrative technology for consumers. However, the fast charging technology is not without its limitations. In this paper we have identified the technology gaps in EV fast charging stations mostly focused on the extremely fast charging topology. It will help pave a path for researchers to direct their effort in a consolidated manner to contribute to the fast charging infrastructure. A thorough review of all aspects and limitations of existing extremely fast charging (XFC) stations have been identified and supporting data are provided. The importance of DC power network based on free fuel energy sources and silicon carbide-based power electronics are proposed to provide ultra-low cost and ultra-high speed XFC stations.

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“…Various research has been done for the electric vehicles modeling [7][8][9][10], implantation [11][12][13] and control [14][15][16][17][18][19][20]. Control techniques for electric vehicles are significant to evolve the revolution of automotive industry.…”

Section: Introduction Advent Of High Pace Development Of Internal Com...mentioning

confidence: 99%

Efficiency enhancement strategy implementation in hybrid electric vehicles using sliding mode control

Ibrar

Ahmad

Safdar

et al. 2023

Electrical Engineering & Electromechanics

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Introduction. Hybrid electric vehicles are offering the most economically viable choices in today's automotive industry, providing best solutions for a very high fuel economy and low rate of emissions. The rapid progress and development of this industry has prompted progress of human beings from primitive level to a very high industrial society where mobility used to be a fundamental need. However, the use of large number of automobiles is causing serious damage to our environment and human life. At present most of the vehicles are relying on burning of hydrocarbons in order to achieve power of propulsion to drive wheels. Therefore, there is a need to employ clean and efficient vehicles like hybrid electric vehicles. Unfortunately, earlier control strategies of series hybrid electric vehicle fail to include load disturbances during the vehicle operation and some of the variations of the nonlinear parameters (e.g. stator’s leakage inductance, resistance of winding etc.). The novelty of the proposed work is based on designing and implementing two robust sliding mode controllers (SMCs) on series hybrid electric vehicle to improve efficiency in terms of both speed and torque respectively. The basic idea is to let the engine operate only when necessary keeping in view the state of charge of battery. Purpose. In proposed scheme, both performance of engine and generator is being controlled, one sliding mode controllers is controlling engine speed and the other one is controlling generator torque, and results are then compared using 1-SMC and 2-SMC’s. Method. The series hybrid electric vehicle powertrain considered in this work consists of a battery bank and an engine-generator set which is referred to as the auxiliary power unit, traction motor, and power electronic circuits to drive the generator and traction motor. The general strategy is based on the operation of the engine in its optimal efficiency region by considering the battery state of charge. Results .Mathematical models of engine and generator were taken into consideration in order to design sliding mode controllers both for engine speed and generator torque control. Vehicle was being tested on standard cycle. Results proved that, instead of using only one controller for engine speed, much better results are achieved by simultaneously using two sliding mode controllers, one controlling engine speed and other controlling generator torque.

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Transformative Role of Silicon Carbide Power Electronics in Providing Low-cost Extremely Fast Charging of Electric Vehicles

Cited by 11 publications

References 4 publications

An Analysis of SiC Power Electronics Implementation in Green Energy Based Extremely Fast Charging

An Analysis of SiC Power Electronics Implementation in Green Energy Based Extremely Fast Charging

A Review of Extremely Fast Charging Stations for Electric Vehicles

Efficiency enhancement strategy implementation in hybrid electric vehicles using sliding mode control

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