Simulative Study to Reduce DC-Link Capacitor of Drive Train for Electric Vehicles

Butt, Osama Majeed; Butt, Tallal Majeed; Ashfaq, Muhammad Husnain; Talha, Muhammad; Raihan, Siti Rohani Sheikh; Hussain, Muhammad Majid

doi:10.3390/en15124499

Cited by 4 publications

(2 citation statements)

References 21 publications

(22 reference statements)

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“…However, the volume of DC-Link capacitors is twice that big compared to the VSI topology. In addition, the costs of producing three-level inverters are higher and the control is more complex [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

The Power Analysis of Semiconductor Devices in Multi-Phase Traction Inverter Topologies Applicable in the Automotive Industry

Šimčák,

Frivaldský,

Resutík

2024

Communications

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Section: Introductionmentioning

confidence: 99%

The Power Analysis of Semiconductor Devices in Multi-Phase Traction Inverter Topologies Applicable in the Automotive Industry

Šimčák,

Frivaldský,

Resutík

2024

Communications

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“…In the first stage, the AC/DC rectifier converts grid AC input voltage into an intermediate DC voltage. In the second stage, the DC/DC converter converts the intermediate DC voltage into the desired battery-rated voltage [7]. Much research has already been done on the first stage (AC-DC rectifier), and an efficiency of approximately 98% has been reported [8].…”

Section: Introductionmentioning

confidence: 99%

Robust Dynamic Control of Constant-Current-Source-Based Dual-Active-Bridge DC/DC Converter Used for Off-Board EV Charging

et al. 2022

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Due to the high power density, inherent zero-voltage-switching (ZVS), and high voltage-conversation ratio, the current source-based isolated dual-active-bridge DAB–DC/DC converters are extensively used for charging EVs under constant-current mode. However, the fast dynamic response of an output current is a crucial requirement for dual-active-bridge DC/DC converters operating as a constant-current source. This study proposes a fast current controller (FCC) for tracking the desired output current under various input/output parameter disturbances/variations. The proposed control strategy can ensure a fast transient response with negligible overshoot/undershoot for output current during start-up and when there are variations in the load or input voltage. Furthermore, the dynamic behavior of the current control against change in the reference current value has also been improved. A constant-current-based DAB–DC/DC converter is modeled and simulated in MATLAB/Simulink software and a scaled-down 300 W lab prototype DAB–DC/DC converter is designed with the TMS320F28335 DSP controller of Texas Instruments. To verify the effectiveness of the proposed current controller, different test cases, such as a change in the load, a change in the input voltage, and a change in the desired output current, are considered. Moreover, under these test cases, the proposed current-control strategy is compared with the conventional proportional–integral (PI) current controller, model-based phase-shift controller (MBPS), and load current feed-forward controller (LCFF). Both the experimental and simulation results have validated the effectiveness of the proposed control strategy.

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Adaptive Neural Network for a Stabilizing Shunt Active Power Filter in Distorted Weak Grids

et al. 2022

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Harmonics destructively impact the performance and stability of power systems. This paper proposes the development of a stable shunt active power filter (SAPF) for harmonics mitigation. The proper and stable operation of the SAPF control system requires the determination of the current reference, phase angle synchronization, and DC-link voltage regulation. This paper uses an artificial neural network (ANN) and one of its sub-methods, the adaptive linear neuron (ADALINE), to determine the current reference. However, determining the current reference requires providing a stable phase angle, which is a fundamental challenge in distorted grids because harmonics created in the grid cause phase angle synchronization problems, due to malfunction of the conventional phase-locked loop (PLL). These things considered, the weak grid connection imposes an instability issue due to the poor performance of the conventional PLL when the grid impedance is high. In this paper, a robust synchronous filter (RSF) is adopted, which separates the harmonic from the main component to provide harmonics-free signals for the PLL. Using RSF, a robust synchronizer quasi-static filter (RSQSF) PLL model is designed, which is effective in dealing with harmonics in weak-grid conditions. MATLAB Simulink was used to check the validation and effectiveness of the proposed control structure. The results show a reduction in harmonics generated in the grid by 86.7% for nonlinear load with a balanced source, 84% for nonlinear load with an unbalanced source under grid impedance, and 80.46% for the nonlinear load with an unbalanced source under weak-grid conditions.

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Simulative Study to Reduce DC-Link Capacitor of Drive Train for Electric Vehicles

Cited by 4 publications

References 21 publications

The Power Analysis of Semiconductor Devices in Multi-Phase Traction Inverter Topologies Applicable in the Automotive Industry

The Power Analysis of Semiconductor Devices in Multi-Phase Traction Inverter Topologies Applicable in the Automotive Industry

Robust Dynamic Control of Constant-Current-Source-Based Dual-Active-Bridge DC/DC Converter Used for Off-Board EV Charging

Adaptive Neural Network for a Stabilizing Shunt Active Power Filter in Distorted Weak Grids

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