A previous article on bidirectional chargers touched on using transformers to provide isolation at high power levels—in which application they are the only game in town, really—but this time the focus will be on achieving isolation at low power levels, such as the feedback signal in a regulator, data communication buses between devices, gate drivers… Read more »
Search Results Found For: "Plug & Charge"
2022 GMC Hummer EV: the biggest, baddest, butchest EV to hit the market?
The news that General Motors would relaunch the infamous Hummer name—as an all-electric truck no less—broke a few days before the high-dollar, high-visibility 2020 Super Bowl ad that introduced that vehicle to the world. After a succession of carefully staged events for media and the public, we now know that the 2022 GMC Hummer EV… Read more »
Setting a new standard for battery leak testing
Defective cells can shorten battery life, decrease range, and lead to safety issues. A leaky cell housing, one common failure mode for Li-ion batteries, can allow ambient humidity to come in contact with the electrolyte, triggering an exothermic (heat-releasing) chemical reaction. Currently, the common practice in the battery manufacturing industry is to test cell packaging… Read more »
2020 EV Charging Infrastructure Best-in-Test: Rating the DC fast charging user experience
If EVs are to replace fossil-fuel vehicles, they need to be able to make long highway trips, which means that DC fast charging needs to be reliable, convenient, affordable and ubiquitous. However, as Charged and other media have often reported, we’re still in the early days of public EV charging, and the user experience often… Read more »
New ROCSYS robotic system automates charging at e-bus depots
Ebusco is a supplier of electric buses and depot chargers, while ROCSYS supplies plug-in robots. The two Dutch companies are working together on a system to automate charging at bus depots, using a robotically-controlled CCS charging system. “The advantages of automating bus depots are many and varied,” says Peter Bijvelds, CEO of Ebusco. “Automating this… Read more »
New emissions scandal? Tests show PHEVs emit more pollution than claimed
Sometimes it seems automakers will try any powertrain technology in order to avoid selling battery-electric vehicles. First diesels, then hydrogen, were touted as ways to reduce CO2 emissions while still maintaining the fill-er-up-with-fossil-fuel business model (and continuing to crank out the colossal SUVs that carmakers claim consumers crave). Many electric purists have long suspected that… Read more »
Using bidirectional programmable DC power supplies for battery testing
Sponsored by EA Elektro-Automatik In today’s fast-paced world the need to create quicker, more mobile mechanical devices is steadily increasing. One primary method for doing this is to replace traditional gas-powered or plugged-in devices with battery power. Batteries have become smaller and increasingly efficient as a result. In order to keep up with the rate… Read more »
A closer look at the DC Link
The term DC link has traditionally referred to the junction between two power conversion stages where an energy storage element (almost always a capacitor) acts as a buffer for each. A classic example is the capacitor placed between the rectifier and the voltage source inverter in a mains-supplied variable frequency drive (see Fig. 1). This… Read more »
Tesla’s success is “a combination of thousands of heroic feats that no one knows about” (book excerpt)
A new excerpt from Tesla: How Elon Musk and Company Made Electric Cars Cool, and Remade the Automotive and Energy Industries, Edition 4.1. An inside look at the early days David Havasi was a car guy from birth. He grew up near Auburn Hills, and his dad worked in the auto industry. “My childhood was… Read more »
Volkswagen ID.4 and Nissan Ariya bring EV drive to compact crossovers…chasing Tesla Model Y
Can new electric entries in a hugely popular segment convince US buyers to buy EVs from Nissan and VW as family vehicles? Two new battery-electric models from major global car brands are about to bring electric cars into a category where they’ve been notably absent: family crossover utility vehicles. The 2021 Volkswagen ID.4 and 2022… Read more »