Optimization of Electric Vehicle Radiator Fan Duty cycle using KULI 1D Transient Simulation

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Published Jan 15, 2022
https://doi.org/10.37285/ajmt.1.1.9
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Vol. 2 No. 1 (2022): January-March 2022

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K. Raviteja Reddy
N. Kiran

Abstract

As the whole world moves towards the electric drive in the automotive sector, it is important for us to focus on the performance of the electric vehicles in the buses segment. For the better efficiency and performance of the vehicle, the temperature balance of the traction motor & auxiliary power electronic components is of utmost important. One of the main contributor for the power electronic components and traction motor thermal system is the Radiator fan. Two electric fans of smaller diameter are used unlike a single fan in engine cooling system. Both these fans are driven by individual BLDC motors, RPM and power consumption of the two electric fans purely depends on the radiator coolant outlet temperature. At full engaged condition, these two electric fans alone consume nearly 26% of the total LV load available for a 250 KW traction motor. In this paper a methodology is defined to calculate the power consumption of the two electric fans in actual vehicle running condition using KULI 1D software. Fan revolution is controlled based on coolant temperature and this is optimized to obtain an optimum control logic.


Keywords: Radiator, Electric Fan, Power Electronics, KULI, Transient, BLDC Motors, Fan Logic, Coolant Temperature, LV Load, Power Consumption, Vehicle Speed, Motor Speed, Motor Torque, Fan Speed, DC-DC Converter

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Author Biographies

K. Raviteja Reddy

Kolli Raviteja Reddy is working in the product development/Technical Centre division of Ashok Leyland, second largest manufacturer of commercial vehicles in India. He has completed his Bachelor’s degree in Mechanical engineering from Maulana Azad National Institute of Technology, Bhopal, India. His current research includes Electric vehicles cooling and Battery Thermal management system. He can be contacted at Email: Kolli.VenkataRavit@ashokleyland.com

N. Kiran

N Kiran - Head Air Intake & Cooling system, is working in the product development/Technical Centre division of Ashok Leyland, second largest manufacturer of commercial vehicles in India. He has completed his Master’s degree in Energy Engineering from PSG College of technology, Tamil Nadu, India. His current research interest includes Engine & Electric Vehicle cooling system design and testing and Computational Fluid Dynamics. He can be contacted at Email: Kiran.N@ashokleyland.com

How to Cite
K. Raviteja Reddy, & N. Kiran. (2022). Optimization of Electric Vehicle Radiator Fan Duty cycle using KULI 1D Transient Simulation. ARAI Journal of Mobility Technology, 2(1), 152–157. https://doi.org/10.37285/ajmt.1.1.9
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References

  1. SAE International Surface Vehicle Recommended Practice, “Test Method for Measuring Performance of Engine Cooling Fans,” SAE Standard J1339, Sep. 2009.
  2. Kiran N “Identification and Optimization of Power Consumed by Engine Cooling fan with Viscous Clutch Drive in a Commercial Truck”. SAE, Apr. 2019
  3. Jeff LaMarre., “FSAE Electric Vehicle Cooling System Design” - Mechanical Engineering – Spring 2015.
  4. N.Ramya, N. Kiran “A Methodology for an Electric Vehicle Traction Motor & Auxiliary Power Electronic Components Thermal System Design and Development”
  5. KULI 1D simulation software tutorial – KULI simulation software to generate and optimize the thermal management system meeting all requirements on component-, system- and vehicle level. Used to predict the cooling system parameters temperatures and pressures at various points of a given duty cycle.