The dc communication protocol between the electric vehicle (EV) and the electric vehicle supply equipment (EVSE) occurs with the support of digital communication. This FAQ will discuss the two types of dc communication for proper EV charging. The … [Read more...]
How is a dc-based architecture useful for EV charging infrastructure?
This article introduces dc-based architecture and discusses its advantages and disadvantages for EV charging infrastructure. A case study is also presented at the end on the effect of this architecture on the total harmonic distortion of the power … [Read more...]
What is an onboard EV charger?
Electric vehicle (EV) onboard chargers (OBCs) convert alternating current (ac) into direct current (dc) for lithium-ion (Li-ion) battery traction packs. This article explains why "Li-ion batteries require dc and highlights how OBCs safely and … [Read more...]
What makes dc charging more complicated than ac charging in EVs?
Dc charging is gaining popularity as electric vehicles (EVs) move toward an era of fast charging. EV batteries charge faster with the help of dc fast chargers. However, dc charging comes with challenges. This FAQ will look at four complications that … [Read more...]
What electrical filtering is required for ac and dc EV charging?
Electrical filters ensure the safe, efficient energy flow between chargers and electric vehicles (EVs). This article discusses how filters stabilize electrical currents, mitigate interference, and reduce thermal runaway risks. It also highlights the … [Read more...]
How ultrasonic welding is bonding the latest EV power modules
Found in the power modules of electric vehicle (EV) power supplies, insulated gate bipolar transistors (IGBTs) are integral to fully electric and hybrid vehicle operation. These three-terminal power semiconductors provide the high-speed, high-voltage … [Read more...]
How to use remote sensing for dc programmable power supplies
Calibrating certain sensing circuits, such as those used in electric vehicles (EVs), is critical to get right. An inaccurate calibration of an automotive battery monitoring circuit could, for example, allow excessive discharge of the battery or allow … [Read more...]
How to select a dc-link capacitor for EV fast chargers
Electric vehicle (EV) fast charging stations are gaining considerable attention and growth in the market, which means an increasing demand for specialized passive components. Given the high-power, high-energy levels involved — particularly at the … [Read more...]
What is the difference between ac and dc EV charging?
EV charging is highly standardized, and the standards are primarily focused on safety and connectivity. The standards between regions. One common thread is the availability of separate standards for ac and dc charging. This FAQ reviews the basic … [Read more...]