EMC FLEX BLOG A site dedicated to Automotive EMC Testing for Electronic Modules

EV Domains

2. June 2015 08:54 by Christian in
Vehicle: Energy Storage Systems: Power Rating Method; Battery Safety; Battery Testing; Battery Stora

Vehicle:

  1. Energy Storage Systems: Power Rating Method; Battery Safety; Battery Testing; Battery Storage, Packaging, Transport, and Handling; Battery Recycling; Crash Testing.
  2. Components: Internal High-Voltage Cables, Wiring, Charging Accessories; Vehicle Diagnostics - Emissions; Audible Warning Systems.
  3. User Interface: Graphical Symbols; Telematics - Driver Distraction; Fuel Efficiency, Emissions, and Labeling

Infrastructure:

  1. Charging Systems: Wireless Charging; Battery Swapping; EV Supply Equipment; Electromagnetic Compatibility; Vehicle as Power Source for non-vehicle applications; Use of Alternative Power Sources.
  2. Communications: Communication Architecture for EV Charging; Communications Requirements for EV Charging Scenarios; Communication & Measurement of EV Energy Consumption; Cyber Security and Data Privacy; Telematics Smart Grid Communications.
  3. Installation: Site Assessment / Power Capacity Assessment; EV Charging Signage and Parking; Charging Station Permitting; Environmental and Use Conditions; Ventilation – Multiple Charging Vehicles; Physical and Security Protection; Accessibility for Persons with Disabilities; Cable Management; EV Supply Equipment Maintenance; Workplace Safety.

Support Devices:

  1. Education & Training: EV Emergency Shut Off; Labeling for Emergency Situations; OEM Emergency Response Guides; Battery Assessment and Safe Discharge; Emergency Evacuations Involving EVs; Workforce Training.



EV Battery Charging Time

2. June 2015 07:50 by Christian in
The battery capacity is essential in EV autonomy.  Depending on the automotive OEM a

The battery capacity is essential in EV autonomy.  Depending on the automotive OEM a fully charged EV battery can provide between 20 KWh (160 km for Nissan) and 85 KWh (480 Km for Tesla).

  • Vehicle's built-in charger: charges up to 43 kW at 230 VAC single-phase / 400 VAC three-phase.
  • External charger: converts AC to DC current and charges up to 120 kW.
Charging Time / 100 Km
Power Supply
Voltage
Max Current
6-8 hours

Single phase - 3.3 kW


230 VAC


16 A


2-3 hours

Three phase - 10 kW


400 VAC


16 A


3-4 hours

Single phase - 7 kW


230 VAC


32 A


1-2 hours

Three phase - 22 kW


400 VAC


32 A


20-30 minutes

Three phase - 43 kW


400 VAC


63 A


20-30 minutes

Direct current - 50 kW


400 - 500 VDC


100 - 125 A


10 minutes

Direct current - 120 kW


300 - 500 VDC


300 - 350 A




Besides charging stations connected to the electrical grid based on fossil-fuel or nuclear power the industry is looking as well into renewable electricity for charging stations like:

  • Solar Power Automotive Recharging Station
  • E-Move Charging Station
  • Wind Powered Charging Station

EV Standards

1. June 2015 19:52 by Christian in
Standards ensure the safety and reliability supporting government policies and legislation. Standard

Standards ensure the safety and reliability supporting government policies and legislation. Standards are opening up markets, ensuring interoperability, encouraging innovation and awareness of technical developments and initiatives.







EV_STD_RoadMap_1.pdf (657.24 kb)

EV components responsible for electromagnetic emissions

1. June 2015 19:10 by Christian in
EV components responsible for electromagnetic emissions are the electric motor, the power converter,

EV components responsible for electromagnetic emissions are the electric motor, the power converter, the power supply, and the lines/cables connecting them. The high speed switching device part of the power converter is the main source of EMI. The impedance of the electric motor that varies as a function of frequency is also an important factor in EMI analysis. Another EMI contributor is the behavior within the high frequency range of the traction battery providing power to the converter. The high-voltage bus (e.g. 900 V) connecting the power converter with the motor and the power supply must be kept very short to limit the emission of noise. The high-voltage system must be insulated and does not use the car body as return conductor like the low-voltage supply system does. The crosstalk between the different lines and the EMI radiated from the high-voltage cables into EV must be addressed.