Design of 2kW DC Charger For Two Wheelers: D. M. Chandwadkar, Azmina Gayasuddin Maniyar, S. P. Ugale
Design of 2kW DC Charger For Two Wheelers: D. M. Chandwadkar, Azmina Gayasuddin Maniyar, S. P. Ugale
Design of 2kW DC Charger For Two Wheelers: D. M. Chandwadkar, Azmina Gayasuddin Maniyar, S. P. Ugale
Table I.
Components
Switches
Vo Conducting
S1 S2 S3 S4 io > 0 io < 0
ON ON OFF OFF Vs S1,S2 D1,D2
OFF OFF ON ON - Vs D4,D3 S4,S3
ON OFF ON OFF 0 S1,D3 D1,S3
OFF ON OFF ON 0 D4,S2 S4,D2
OFF OFF OFF OFF
- Vs
D4,D3 D4,D2
Fig. 4.2 Phase Shift Full Bridge DC-DC Converter
Vs
V. RESULTS
The transformer turns ratio n which can be calculated from
equation (1) is 8.4. Sinusoidal PWM Method is used in the inverter. The
diagnostics for the building of the ePWM model is shown in
Ns/Np = (Vout / Vin_min) * (1/∂max) (1)
fig. 5.1. These pulses from the ePWM blocks are given for
n = Np/Ns = 8.4 driving the IGBTs as shown in fig. 5.2. These are generated
The table II depicts the specifications of the phase shift full using the ePWM Block of the Texas Instruments C2000
bridge DC-DC Converter. For the PSFB DC-DC Converter, TMS320F28027 MCU.
the input voltage is 560V and the output voltage is 48V with
the switching frequency of 100KHz. The IGBTs which can
be selected are STGW60H65DFB with 650V, Ic = 60A.
Table II.
Parameter Description Typ. Unit
Vin Input Voltage 560 V
Vout Output Voltage 48 V
Pout Output Power 2 kW
Iout_max Maximum Output Current 42 A
fsw Switching Frequency 100 kHz
The waveforms of reference voltages, voltages across 3. Xun Gong, Jayanth Rangaraju, “Taking charge of electric vehicles –
both in the vehicle and on the grid”, March 2018.
capacitors and modulation are depicted in fig. 5.3. The
4. “Power Electronics: Circuits, Devices and Applications”, Muhammad
Vienna rectifier output voltage(dc-link voltage) and the H. Rashid, Third Edition, 1989.
phase currents are shown in fig. 5.4. The dc-link voltage 5. “Power Electronics: Converters, Applications and Design”, Ned
varies according to the reference voltages and the Mohan, Tore M. Undeland and Willam P. Robbins, Third Edition, 2004.
6. Tariq, Aldawsari, “Design, Simulation and Implementation of Three-
modulation index.
Phase Bidirectional DC-DC Dual Active Bridge Converter Using SiC
MOSFETs”, University of Arkansas, Fayetteville, Dec. 2014.
7. Intelligent Transportation System of the IEEE Vehicular Technology
Society, IEEE Standard Technical Specifications of a DC Quick
Charger for Use with Electric Vehicles, Approved 3 September 2015.
8. C.Lin, H. Liu and C. Wang, “Design and Implementation of a
Bi-directional Power Converter for Electric Bike with Charging
Feature”, 5th IEEE Conference on Industrial Electronics and
Applications,2010.
9. K. Hemasuk, S. Ngam, “ The Simplified Regenerative Boost Converter
for Electric Vehicle Applications”,5th International Electrical
Engineering Congress, Pattaya, Thailand, 8-10 March 2017.
10. Joachim Skov Johansen, Fast-Charging Electric Vehicles using AC,
Master Thesis, DTU Electrical Engineering, September 2013.
Fig. 5.3 The reference voltages,Vc1,Vc2 and Modulation 11. Gjelaj, Andersen, P. Bach et. al., Optimal Design of DC Fast-Charging
Waveform Stations for EVs in Low Voltage Grids, IEEE Transportation
Electrification Conference (pp. 684-689),2017.
12. Finalized Draft, Electric Vehicle Conductive DC Charging System,
Automotive Industry Standard , AIS138(Part 2)/DF, May 2017.
13. International Electrotechnical Commission (2011), IEC releases final
draft standards for EV charging, Oct. 2011.
14. R. P. Nagamani, K. Sabitha, “Operation and Designing of Bidirectional
DC-DC Converter for Hybrid Electric Vehicle”,IJITECH, Vol.04,
Issue-03, March 2016.
15. Kavitha R., Radhamani R., “Multi Input Bidirectional DC-DC
Converter for Hybrid Electric Vehicle Application”, IJIRSET, Vol. 5,
Issue 2, February 2016.
Fig. 5.4 The dc-link voltage and Phase currents. AUTHORS PROFILE
The dc link voltage obtained from the output of the Vienna Dr. Dinesh M. Chandwadkar is a Professor and head
Rectifier(PFC) is the input for PSFB DC-DC Converter of E & TC Department at K. K. Wagh Institute of
Engineering Education & Research, Nashik, India. His
which is made up of IGBTs and the output voltage obtained area of interest includes Signal Processing, Power
is 48V. This 48V is required for charging of the electric Electronics, Mechatronics, Automotive Electronics etc.
vehicle battery. The input and output voltages of the DC DC He has published many research papers in reputed
Converter are plotted in the fig. 5.5. Journals. He is working as Board of Studies member of Electronics and
Telecommunication Engineering for Pune University. He is working on a
research project “ Technology Pilot for DC charging of EV Bus”, funded by,
DHI New Delhi.
Fig. 5.5 The input and output voltages Prof. Dr. Sunita Patil (Ugale) is working as an
Associate Professor in Electronics and
VI. CONCLUSION Telecommunication Engineering department of K. K.
Wagh Institute of engineering Education and research,
In this paper, 2 kW DC Charger is presented for Electric Nashik, Maharashtra since last 20 years. She has
completed her Ph. D. from S.V. National Institute of
Vehicle Applications. The purpose of the PFC stage is to Technology, Surat.
ensure that the input current is in phase with the grid voltage, Her special fields of interest include Fiber Optics Communication, Optical
thus improving the grids overall power factor. The dc link Sensors and VLSI technology. She has published more than 50 papers. She
voltage obtained is 560V. The SPWM method is used in the has worked as Board of Studies member of Electronics Engineering for Pune
University. She has received research grant from Department of science and
inverter part. The output voltage of 48V is used for charging technology of India, DHI New Delhi and BCUD.
the electric vehicle’s battery.
REFERENCES
1. Bart Basille, Jayanth Rangaraju,“Which new semiconductor
technologies will speed electric vehicle charging adoption?” ,
September 2017.
2. “Committee Report on Standardization of Public EV Chargers”, May
2017.