DC Charger for E-Vehicle

Electrical Research and Development Association (ERDA)

ERDA has developed Indigenous DC charger technology for charging vehicles with battery voltage less than 100V. The charger supports high current output of upto 150 A for fast charging scenarios. Power circuit topology used is twelve pulse diode bridge rectifier followed by midpoint clamped three level buck converter. In this power scheme a 12 pulse diode bridge rectifier is utilized to generate the rectified DC voltage. The next stage here comprises of a three level buck converter. This three level buck converter with the help of two capacitors reduce the voltage stress on each switch by half. A dual PID loop is implemented in the simulation. The outer PID loop maintains the battery charging voltage and the inner current loop maintains maximum current. Depending on the current requirement, the duty cycle of the two IGBT’s are adjusted.

Advantages of this topology

  • Less number of switches
  • Higher input power factor due to 12 pulse rectifier
  • Reduced current stress on the rectifier diodes as two rectifiers stages are connected in series
  • Reduced voltage stress on buck converter IGBTs as voltage across them is halved by the use of midpoint clamped capacitors
  • Reduced inductor size
  • Control part is simplified as only two IGBTs are to be controlled
  • Economical design

DC Charger Specifications

AC Input

415 Vac, (±10%), 3 phase, 5 wire system (3Ph + N + PE)

Input frequency

50 Hz (± 3 Hz)

DC output voltage 

Suitable for 48 V & 72 V vehicle battery configuration

Output power

15 kW continuous

Output connector compatibility

GB/T

Efficiency

> 90%

Communication between EVSE & vehicle

CAN based as per IEC 61851-24

Charging modes

CC / CV

Emergency switch

Push button type

Indicators

Input supply, charging

Display

7” LCD touch screen

IP rating

IP 54

Cooling

Air cooled

Ambient temperature range

0°C to 5°0C

Fig. DC Charger for E-vehicle

ERDA's

Leadership Team

Dr. Satish Chetwani

Director

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01.

Dr. Uday Puntambekar

Asst. Director & Head of Division Mechanical and Insulating Materials, Rajahmundry, Purchase

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02.

Mr. Rajib Chattopadhyay

Sr. Manager & Head of Division PETE II (Impulse, Cable, CT-PT, Calibration), Rabale, Narol, ERDA North, Maintenance, (Electrical & Civil)

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03.

Mr. Anil Khopkar

Asst. Director & Head of Division Business Development & CRM, Corporate (Accounts & Finance, P&A, HR)

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04.

Mr. Anil Aswani

Asst. Director & Head of Division SEC (Third Party Inspection, Energy Meter, EMI/EMC, Appliance, Lamps & Luminaries, Motor & pumps, Power Systems)

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05.

Mr. Yashinkhan Pathan

Sr. Manager & Head of Division PETE I (Transformers, Switchgear, Short Circuit – Makarpura & Savli)

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06.

ERDA's

VISION

An Internationally Renowned Laboratory and Center of Excellence in R&D for Electrical Industries and Utilities.

ERDA's

MISSION

To Achieve Excellence by Virtue of Competence through R&D, Testing, Calibration, Training and Information Dissemination to Improve Quality and reduce the cost of Equipment, Materials and Services for Electrical Industries, Utilities and Users of Electricity.

ERDA's

VALUES

  • Attitude to Excellence
  • Dedication to Satisfy Customer Through Competitive Quality Services in Minimal Lead Time
  • Confidence in Integrity of Results
  • Loyalty & Pride for the Organization
  • Work as Family
  • Respect Dignity / Potential of Individuals
  • Motivate Each Other
  • Strengthen Membership and Industry Links
  • Develop Linkages with Foreign Research Organizations
  • Marketing at International Level

ERDA's

Middle Management Team

Name of Employee
Mr. Mehul Patel
Sr. Manager
HR
Mr. Pratik Shah
Asst. Manager
Accounts & Finance
Mr. Pranav Parikh
Dy. Manager
Business Development
Mr. Shailesh Patel
Sr. Manager
Cables, CT-PT, Capacitors & PD
Mr. Ravi Nandwana
Sr. Engineer
CT-PT & Capacitors
Mrs. Vidya Kapse
Dy. Manager
Customer Relationship Management
Mr. Puran Gajera
Dy. Manager
EMI/EMC
Mr. Nitin Chitte
Asst. Manager
Impulse – Makarpura
Mr. Anil Solanki
Sr. Manager
Information Technology
Mr. Jaydeep Sheth
Dy. Manager
Liquid Dielectric
Mr. Ravi Singh
Dy. Manager
Motors & Pumps, Solar Pump & Converters
Mr. Anil Suthar
Dy. Manager
Mechanical
Mr. Bhavesh Vasiyani
Manager
Non Destructive & Energy Management
Mr. Mitesh Prajapati
Sr. Engineer
Quality System
Mr. Sandeep Soni
Manager
Short Circuit 3– Savli
Mr. Amar Shah
Dy. Manager
Third Party Inspection
Mr. Asheesh Dhaneria
Manager
TM5(A) NPT Electronics,
TM5 (B) NPT Electrical
Mr. Munaf Patel
Manager
Short Circuit 2 – Makarpura
Mr. Pankaj Chawla
Manager
ERDA (North)
Name of Employee
Mr. Laxman Bhekare
Sr. Manager
Admin
Mr. Rakesh A Patel
Dy. Manager
Appliance
Mr. Brijesh Sachdeva
Manager
Business Development ERDA (North)
Mrs. Sheetal Panchal
Dy. Manager
Cables
Mr. Nirav Taunk
Manager
Calibration
Mr. Umesh Soni
Manager
Electrical Diagnostics
Mr. Tejas Mistri
Dy. Manager
Energy Meter
Mr. Tirthashankar Vishwakarma
Manager
Impulse – Savli
Mr. Nitin Patel
Dy. Manager
Lamps & Luminaires & Solar
Mr. Pramod Patel
Dy. Manager
Maintenance (Civil & Electrical)
Mrs. Sneha Sheth
Manager
Solid Dielectrics
Mrs. Bhoomi Patel
Dy. Manager
Metallurgy
Mr. Shailesh Modi
Sr. Manager
Power Systems
Mr. Jeetendra Tahilwani
Sr. Manager
Transformers & Short Circuit 2 – Makarpura
Mr. Goutam Som
Manager
Switchgear & IP
Ms. Shefali Talati
Dy. Manager
TM4 Power Systems (R&D), Documentation
Mr. Kapil Sharma
Dy. Manager
Transformers
Mr. Nitin Doshi
Sr. Manager
ERDA (West)
Mr. Rajesh Marri
Dy. Engineer
ERDA (South)

Where else are we located?

These services are provided through its 28 state-of-the-art centres located at its head office in Vadodara and three regional laboratories located

ERDA's

Code of Conduct

Our Mission and Values statement clearly declares that we shall achieve excellence in our areas of operation. Achieving this excellence is not possible if we do not act with Integrity, Honesty, Impartiality, Dignity, Loyalty and Pride for the organization. We must always ensure that we live out those values every day.

One of our primary objectives is to help our customers, meet quality standards for virtually any market in the world and protect them against risk by ensuring compliance with local, national and international laws. The accuracy and validity of reports and certificates that we provide and maintaining the trust and confidence of our customers, their customers and others impacted by our work, are therefore important factors which contribute to our success.

Our objective is to achieve excellence by virtue of competence through R&D, testing, calibration, training and information dissemination to improve quality and reduce cost of equipment, materials and services for electrical industries, utilities and users of electricity.

ERDA's

CLIENTS & TESTIMONIALS

ERDA collaborates with Manufacturers, Distribution & Transmission Companies, Power Plants & Process Plants across India and Globe to meet their requirement for laboratory evaluation and contract research. Our state of the art laboratories along with highly competent manpower ensures proper evaluation of our client’s products and to get greater market access. With “Customer First” centric approach, more than 10,000 customers are part of ERDA family.

01

Testing & Evaluation

NABL Accredited & BIS Approved

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02

Field Services

Onsite Testing, Inspection, Consultancy

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03

R&D and Expert Services

And Other Expert Services

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