Category Guide

Plan battery preconditioning for fast charging in electric buses and trucks. Define readiness signals, charging time budgets and validation inputs with EVLINK.

Compare battery liquid cooling and air cooling for electric buses and trucks, including thermal loads, heat rejection, installation and OEM validation inputs.

Learn what a high voltage PTC heater self-regulates, which vehicle controls remain essential, and what operating data to request before selecting an HVCH.

If you ask, “When the battery is fully charged, where does the energy generated by regenerative braking go?” most people tend to give just one answer: it’s taken over by the friction braking system. For a passenger car traveling downhill…

When braking resistors were returned due to damage, we dismantled them for inspection; we had initially assumed this was due to a calculation error, but we often found that the calculations themselves were correct. The application of the formula U²/P…

About two weeks after a project begins, we usually receive this question: “We already have a regenerative braking system, so why is there still a resistor listed in the bill of materials (BOM)?” That’s a good question. Regenerative braking does…

Engineering illustration of a generic high-voltage coolant heater connected to vehicle controllers over a CAN communication path.

A customer sent us a selection table for braking resistors for variable frequency drives (VFDs) and asked: ‘Our braking power is 140 kW; which row should we choose?’ The table lists options for duty cycles of 10 per cent, 20…

Engineering illustration of a commercial EV battery coolant loop coupled to a separate refrigerant circuit through a chiller.

We once received an enquiry: ‘For a 600 V/800 V dual-platform system, what resistance value should be selected for the braking resistor?’ In the field of variable frequency drives (VFDs), this question is easy to answer. Simply open the drive…