SiC power semiconductors are believed to offer an attractive solution for motor drive application in electrified vehicles 5~10 years. Newer generations of commercial MOSFETs the 900~1200V class significantly improved energy losses, reliability and price. To analyze potential impact technology HEV inverter systems, performance gain over existing silicon IGBTs must be quantified, which translates vehicle-level fuel economy value consumers. This study will look into drive-cycle simulation...

This article proposes new, practical, and scalable mesh configurations for dc microgrids. The new are inspired by the concepts in graph theory. A decentralized secondary droop control method without involving communication complexity is also presented this article. proposed eliminates limitations of conventional scenarios where cable resistances a microgrid system cannot be neglected. with achieve accurate current sharing among all converters. effectiveness performance validated using...

Paralleling of power electronic converters to achieve current sharing is a critical aspect dc microgrid. Droop control popular technique parallel converters. This article presents novel perspective different practically realizable nonlinear droop characteristics. Using the probability distribution function load current, methodology proposed optimize characteristics control. In stand-alone microgrid system, information used in method typically known using historical data or can be estimated...

This article proposes a distributed secondary control method for radial dc microgrid systems with reduced communication complexity. The proposed utilizes the bus voltage information of microgrid, which is communicated to individual converters. in nature as controllers are implemented locally at each converter. does not require channels between Thus, it achieves accurate current sharing and good load regulation complexity compared state-of-the-art methods. robust, its performance gracefully...

This article studies the new benefits that partial power processing brings to Silicon (Si) devices compared widebandgap technologies.To prove this, proposed case study consists of an on-board charger (OBC) application in which a Sibased converter (PPC) is with Carbide (SiC) based full (FPC).The OBC considers three different technologies lithium-ion batteries and main comparison metrics are: semiconductor switching, temperature rise semiconductors, volume device losses (efficiency).This last...

An extreme fast charging (XFC) station, capable of simultaneously multiple electric vehicles (EVs), is envisioned as a replacement for traditional gas station. A cascaded multicell AC-DC solid-state transformer (SST) proposed the direct interconnection XFC station with medium voltage (MV) grid to achieve galvanic isolation. The efficiency implications SST are evaluated state art Silicon (Si) and Carbide (SiC) power modules. methodology presented select number cells such SST. It demonstrated...

Droop control is a commonly used method for load current sharing between the converters in DC microgrid applications. In droop control, performance gets degraded due to resistance of cables and other non-idealities. Secondary approaches are typically along with achieve accurate among converters. However, secondary methods can result converter steady-state output voltages exceeding design or permissible voltage limits. this paper, tertiary proposed ensure that remain within safe bounds under...

Droop control is a commonly used method to parallel converters in DC microgrid. However, the presence of non-idealities such as cable resistances can degrade current sharing accuracy among paralleled with droop approach. In this paper, an optimized piecewise droop-based scheme proposed improve accuracy. method, characteristics are using load distribution. The compared both linear and nonlinear based approaches over wide range conditions. It shown that achieve improved desired operating...

A solid-state transformer comprising a cascaded H-bridge followed by dual-active bridge converter is promising solution for megawatt medium voltage DC fast charger application. Previously, IEEE Std 1547– 2018 mandates system with the capability of exporting an active power to have minimum continuous reactive comply 1547–2018. An approved revision 1547–2018 comprehensively discusses extend electric vehicle chargers. This paper analyzes impact operating grid compliant single-phase on overall...

Battery-powered electric vehicles have the possibility to be one of most disruptive technologies early 21st century. In vehicles, advancements are being done for better performance and safety. The safe operation battery pack is critical concerns an vehicle. With limited number voltage current measurement points, method proposed in this paper ensures during all vehicle operating modes, i.e. key on, off, drive charge. provides efficient cost-effective solution perform contactor weld check...

A solid-state transformer (SST) system comprising cascaded H-bridge (CHB) and dual-active bridge (DAB) converters is a promising solution for DC fast charger. This paper primarily focuses on the control design of DAB this utilizes dual-loop based scheme. The consists central voltage inner current loops. loops are needed to achieve sharing between paralleled DABs. In paper, loop uses output each as feedback signal. Thus, structure implemented in more cost-effective computationally less...

Electric vehicles are powered by lithium-ion batteries which require an effective but low power consuming thermal management system. 1D and 3D models help us to understand the influence of different parameters on system response optimizing them. Even though modelling using tools gives a more accurate precise result, complexity simulation time upper hand. The ease also allows it be used during concept development in parameter tuning choose best components at its operating point. This paper...

Droop control is a commonly used method for load current sharing among the converters in DC microgrid applications. However, this method, and voltage regulation are affected by cable resistances other non-idealities. The conventional droop method's performance can be improved using secondary algorithms that involve low-bandwidth communication channels. In paper, an algorithm proposed multi-source, single bus system. algorithm, information communicated to individual converters, there no...

A solid-state transformer (SST) comprising a cascaded H-bridge and dual active bridge (DAB) converter is promising solution for megawatt medium-voltage dc fast charger application. The new IEEE Std 1547.9-2022 comprehensively discusses extending the minimum reactive power capability to electric vehicle chargers. This article analyzes impact of operating grid compliant single-phase SST on overall system. dc-link voltage due implementation H-bridges DAB zero-voltage switching (ZVS) mode at...

Accurate estimation of state charge (SOC) a battery pack is one the critical asset in electric vehicles and static power banks. Lithium iron phosphate (LFP) Nickle Manganese Cobalt Oxide (NMC) are extensively used for these applications. It's quite challenging to estimate true SOC with LFP cells because flat nature their vs open circuit voltage (OCV) curve. The problem gets worse series arrangement having slightly different capacities and/or age. This paper proposes novel computationally...

Among various existing battery models, equivalent circuit model (ECM) is widely employed for real-time management applications due to the ease of parametrization and implementation. Most commonly used consists two resistive capacitive (RC) networks represent slow fast dynamics a cell. Such works well temperatures above equal 0°C depending on chemistry. However, it does not work at low temperatures, since fails capture enhanced impedance temperature phenomena such as chemical discharge,...

This paper introduces a decentralized control strategy for an isolated Triple Active Bridge (TAB) bidirectional converter integrating Photovoltaic (PV) and Energy Storage Systems (ESS). The proposed method ensures well-regulated DC bus voltage is implemented using decoupled approach. methodology considers variations in solar irradiation PV the State-of-Charge (SOC) of ESS. In approach, when ESS SOC less than 100%, output maximized by operating it maximum power point (MPP) mode charged or...

This paper presents the analysis of a triple active bridge (TAB) converter during DC short circuit fault (SCF). An understanding operating SCF is required to design for ride-through capability. The done by evaluating inductor currents TAB rated conditions and conditions. aids magnetic components, thermal requirements, device selection converter. analytical model based on generalized harmonic approximation (GHA) developed derive current magnitudes. impact different power transfer inductances...