Voltage Oriented Controller Based Vienna Rectifier for Electric Vehicle Charging Stations Simulation

ABSTRACT:

Electric Vehicle Vienna rectifiers have gained popularity in recent years for AC to DC power conversion for many industrial applications such as welding power supplies, data centers, telecommunication power sources, aircraft systems, and electric vehicle charging stations. The advantages of this converter are low total harmonic distortion (THD), high power density, and high efficiency.

PI

Electric Vehicle Due to the inherent current control loop in the voltage-oriented control strategy proposed in this paper, good steady-state performance and fast transient response can be ensured. The proposed voltage-oriented control of the Vienna rectifier with a PI controller (VOC-VR) has been simulated using MATLAB/Simulink.

THD

Electric Vehicle The simulations indicate that the input current THD of the proposed VOC-VR system was below 3.27% for 650V and 90A output, which is less than 5% to satisfy the IEEE-519 standard. Experimental results from a scaled-down prototype showed that the THD remains below 5% for a wide range of input voltage, output voltage, and loading conditions (up to 2 kW). The results prove that the proposed rectifier system can be applied for high power applications such as DC fast-charging stations and welding power sources.

KEYWORDS:

  1. Front-end converters
  2. High power applications
  3. Power factor
  4. Total harmonic distortion
  5. Vienna rectifier
  6. Voltage oriented controller

SOFTWARE: MATLAB/SIMULINK

BLOCK DIAGRAM:

Figure 1. The Proposed Electric Vehicle Charger Is Based On Vienna Rectifier With A Voc Controller (Voc-Vr) System.

EXPECTED SIMULATION RESULTS:

Figure 2. Input Current Waveform Of The Proposed Voc-Vr System With 440 V Rms In And 650 V Dc Out.

Figure 3. Total Harmonic Distortion Of The Proposed Voc-Vr System With 440 V Rms In And 650 V Dc Out.

Figure 4. Dc Output Voltage And Output Current Of The Vienna Rectifier With Voc Controller With 350 V Ac Rms Input And 650 V Dc Output Voltage.

Figure 5. Dc Output Voltage And Output Current Of The Vienna Rectifier

With Voc Controller With 350 V Ac Rms Input And 220 V Dc Output Voltage For Slow Charging Stations.

CONCLUSION:

Electric Vehicle In this research work, a three-level Vienna rectifier based on a voltage-oriented controller (VOC-VR) has been designed and experimentally tested. The proposed system has been simulated using MATLAB Simulink software targeting high power applications such as DC-fast chargers for electric vehicles. The proposed controller for Vienna rectifier focused on combining voltage-oriented controllers with the PWM method.

VOC

Electric Vehicle In proposed design, the reactive and unstable active currents are counteracted by the input and output filters and Voltage Oriented Controller (VOC) with Vienna rectifier. The proposed design also guarantees a sinusoidal current at the input side with minimum ripples and distortions. The system’s power factor is maintained at unity, and total harmonic distortion of the input current is kept less than 5 %, which meets the IEEE-519 standard.

PFC

Electric Vehicle The benefit of the proposed controller over conventional PFC controller has been demonstrated by simulations and experimental results. Low THD, good power factor, and smaller filtering requirements make the voltage-oriented controller-based Vienna rectifier an ideal candidate in electric vehicle charging stations.

REFERENCES:

[1] F. Nejabatkhah, Y. W. Li, and H. Tian, “Power quality control of smart hybrid AC/DC microgrids: An overview,” IEEE Access, vol. 7, pp. 52295_52318, 2019.

[2] P. Arboleya, G. Diaz, and M. Coto, “Unified AC/DC power flow for traction systems:Anewconcept,” IEEE Trans. Veh. Technol., vol. 61, no. 6, pp. 2421_2430, Jul. 2012.

[3] W. Su, H. Eichi,W. Zeng, and M.-Y. Chow, “A survey on the electrification of transportation in a smart grid environment,” IEEE Trans. Ind. Informat., vol. 8, no. 1, pp. 1_10, Feb. 2012.

[4] I. Pavi¢, T. Capuder, and I. Kuzle, “Value of flexible electric vehicles in providing spinning reserve services,” Appl. Energy, vol. 157, pp. 60_74, Nov. 2015.

[5] L. Hang, H. Zhang, S. Liu, X. Xie, C. Zhao, and S. Liu, “A novel control strategy based on natural frame for Vienna-type rectifier under light unbalanced-grid conditions,” IEEE Trans. Ind. Electron., vol. 62, no. 3, pp. 1353_1362, Mar. 2015.

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