Robust nonlinear control of battery electric vehicle charger in grid to vehicle applications

Ahmed, Ijaz; Ahmad, Iftikhar; Ahmed, Shahzad; Adil, Hafiz Mian Muhammad

doi:10.1016/j.est.2021.103039

Cited by 31 publications

(5 citation statements)

References 15 publications

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“…When the current flows from the grid to the DC converter output, the converter shown in Fig. 3 acts as a boost rectifier, increasing the output voltage (V dc ) to be higher than the input source voltage E. The inductor and capacitor are used to filter the grid current and Using the Kirchhoff's voltage and current laws, following averaged mathematical model of the converter has been derived in literature [6], [11]:…”

Section: Derivation Of the Ac-dc Converter Modelmentioning

confidence: 99%

Application of Advanced Model Reference Adaptive Control for Bidirectional AC-DC Converters

Qureshi,

Musumeci,

Torelli

et al. 2023

2023 58th International Universities Power Engineering Conference (UPEC)

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Bidirectional AC-DC converters are used in many applications such as renewable energy systems, communication systems, and grid connection of electric vehicles. In this paper, a non-linear controller based on the Lyapunov-based model reference adaptive control approach is proposed for single-phase bidirectional AC-DC converters that incorporate active power factor correction circuits. The proposed controller dynamically adjusts the output power according to the grid conditions and user preferences while maintaining a nearly unitary power factor and a constant output DC voltage set as the reference value. The proposed controller also ensures the stability and robustness of the system under various operating conditions and disturbances. The performance of the proposed controller is compared with another Lyapunov-based control proposed in the literature to show that the proposed controller performs at least on par with the other controller in all aspects.

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Section: Derivation Of the Ac-dc Converter Modelmentioning

confidence: 99%

Application of Advanced Model Reference Adaptive Control for Bidirectional AC-DC Converters

Qureshi,

Musumeci,

Torelli

et al. 2023

2023 58th International Universities Power Engineering Conference (UPEC)

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show abstract

“…Equation ( 9) demonstrates that the model-free and feedback controllers should work jointly to change the control input based on the uncertainties of the system parameters. By substituting Equation (9) in Equation ( 8), we have [14]: Equation ( 4) indicates that by proper control of d, the stability of the DAB can be guaranteed and the fast dynamic response and zero steady-state error can be regulated. More details about the stability analysis of the DAB dc-dc converter can be found in [21].…”

Section: Formulation Of Model Free-integral Backstepping Control (Mf-...mentioning

confidence: 99%

“…Equation ( 9) demonstrates that the model-free and feedback controllers should work jointly to change the control input based on the uncertainties of the system parameters. By substituting Equation (9) in Equation ( 8), we have [14]: (10) It is clear that there is an error between the desired and the actual values of each state variable. Therefore, the function of error is defined as:…”

Section: Formulation Of Model Free-integral Backstepping Control (Mf-...mentioning

confidence: 99%

“…In the context of EV chargers, several control approaches have been developed by contemporary researchers such as model predictive control (MPC) [8], sliding mode control (SMC) [9,10], active disturbance rejection control (ADRC) [11], backstepping control [12], and LSTM neural network [13]. However, most the robust controllers need the system model be accurately identified.…”

Section: Introductionmentioning

confidence: 99%

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Smart Emergency EV-to-EV Portable Battery Charger

et al. 2022

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With the increase in the number of electric vehicles (EVs) and developments in their related charging infrastructures, consumers have still some concerns about some limiting factors in the EV industry such as battery life, charging station availability, electric grid capacity, limited driving range, and slow charging of batteries. Although some solutions are proposed for these limitations, they are not sufficiently efficient and cost-effective. Moreover, charging of EVs on-the-road is still a challenging issue which requires more innovation. This paper proposes a novel battery charger, known as an Emergency EV-to-EV Portable Battery Charger (EPBC), which provides a cost-effective solution for charging EVs on-the-road in emergency mode. The suggested smart charger can charge another EV based on the state of charge (SOC), capacity, and other important technical specifications of batteries in a safe and reliable manner. The smart charger can regulate the output voltage and the injected current to the EV simultaneously. To realize these features, a model free nonlinear integral backstepping control (MF-NIBC) is adopted to regulate the output voltage of the battery charger. By utilizing the actor and critic networks, a deep deterministic policy gradient (DDPG) is adopted to adjust the MF-NIBC controller. Finally, real-time tests based on the OPAL-RT setup are conducted to confirm the applicability and feasibility of the proposed EV-to-EV portable battery charger.

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“…In addition, as the equipment of chargers, the current often contains a certain AC component. When the charger is verified on-site, it is necessary to achieve broadband current measurement and comparison [18][19][20]. Paper [21] studied the integrated dual-mode DC power metering device for DC distribution networks.…”

Section: Introductionmentioning

confidence: 99%

Traceability Technology of DC Electric Energy Metering for On-Site Inspection of Chargers

Li¹,

Xiong²,

Wang³

2023

Energy Engineering

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The on-site inspection of high-power DC chargers results in new DC high-current measurement and DC energy traceability system requirements. This paper studies the traceability technology of electric energy value for automotive high-power DC chargers, including: (1) the traceability method of the built-in DC energy meter and shunt of the charger; (2) precision DC high current and small precision DC voltage output and measurement technology. This paper designs a 0.1 mA∼600 A DC high current measurement system and proposes a 0.005 level DC power measurement traceability system. The uncertainty evaluation experiment of the DC power measurement calibration system and the high-power DC charger's on-site calibration experiment results verify the method's effectiveness and feasibility in this paper. The experimental results show that the combined standard uncertainty of the DC power metering verification system can be 0.0451%.

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Robust nonlinear control of battery electric vehicle charger in grid to vehicle applications

Cited by 31 publications

References 15 publications

Application of Advanced Model Reference Adaptive Control for Bidirectional AC-DC Converters

Application of Advanced Model Reference Adaptive Control for Bidirectional AC-DC Converters

Smart Emergency EV-to-EV Portable Battery Charger

Traceability Technology of DC Electric Energy Metering for On-Site Inspection of Chargers

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