One of the biggest challenge of the 21st century will be to decarbonized the traditional transportation accountable for over 25% of global CO2 emissions. Decarbonization must be done without sacrificing the interconnectedness we've come to expect from modernity. With a fleet of 157 mil of EVs expected in 2030, the charging infrastructure needs to proceed in parallel, and sometimes anticipate that of the EV stock. LEM actively contributes to the deployment of electric vehicle charging stations, by supplying very high technology sensors and meters making the charging stations more reliable, safer, more affordable, and smarter.
LEAKAGE CURRENT SENSOR
LEM Residual Current Detection (RCD) portfolio for 6 mA DC / 30 mA AC compliant with IEC 62752 and UL 2231 standards.
· Design with compact solutions with single & 3 phase version
· Digital output (SPI bus) and Analog
· Tripping Signal, with settable threshold option via SPI (Flexibility to decide the adequate standard late in design)
· Tests windings for customer
· Complies with standards Industrial (CDSR) and Automotive (CDT) grade versions
CURRENT SENSORS FOR POWER MODULE
Current control loop for Power modules
LEM provides a wide range of current sensors for power module converters, transforming the Alternative Current to a Direct Current. Power converters are placed in stacks to increase the power of DC fast charging stations, up to 400kW. In average eight converters are present. In each power module, current sensors are necessary to ensure the control loop function which regulate the stability and the power of inverters.
DC METER FOR EV CHARGERS
The new DC Billing Meter (DCBM) from LEM is a smart and compact billing solution that will help electric vehicle charging stations take advantage of the benefits of DC charging.
Offering a power measurement range from 25kW to 600kW, the DCBM is a legal and certified meter that provides accurate billing of DC chargers.
To reduce this charging time to only a few minutes, charger manufacturers convert the AC into a direct current (DC) outside the car, bypassing the On-Board-Charger (OBC) and supplying the battery pack of the electric vehicle directly. This method can boost charging power up to 400 kilowatts. However, this conversion stage generates power losses, which do not have to be paid for by the end user, the EV’s owner. Thus, an electric meter is placed after the conversion stage to monitor and bill the exact energy transferred to the electric vehicle.