Posts By: Christian Ruoff

Tesla’s top motor engineer talks about designing a permanent magnet machine for Model 3

Most mainstream EVs from major automakers have used some form of permanent magnet traction motor technology, with two high-profile exceptions: Tesla’s Model S and Model X both use induction motor technology. Internet engineering forums are full of compelling arguments for using both technologies in vehicles, as well as loads of speculation on what drove Tesla… Read more »

Alta Motors says its electric dirt bike has world-class energy density

Alta Motors claims that its dirt bikes have a battery pack with energy density that’s among the highest of any production vehicle. With help from Scheugenpflug’s custom production equipment and Wevo-Chemie materials, the motorcycle builder says its thermal design was the key to achieving that. Seven years ago, a group of motorcycle and off-road dirt… Read more »

Carpenter Technology develops a new soft magnetic alloy with key benefits for EV motors

Electrical steels are soft magnetic materials found at the heart of electric motors. They’re typically manufactured in cold-rolled strips, cut into shapes to make laminations and then stacked together to form the stator and rotor of a motor. These specialty steels are tailored to produce certain magnetic properties, and have a magnetic flux density (key… Read more »

Hyundai launches Ioniq with three distinct powertrain choices: EV, PHEV and hybrid

In the short history of the modern EV industry, it’s been common for automakers to launch plug-in cars under a new brand or model – particularly those companies who are serious about selling EVs at scale. Or, at least the ones that want to appear serious about selling a lot of EVs. Even though Hyundai… Read more »

Tesla’s chief motor engineer discusses the potential of next-generation motor technologies

Tesla spends a considerable amount of resources on basic research into EV systems – as well it should. EV technology is very young compared to that of ICE vehicles, so it’s safe to assume that, in a few short years, the aggregate of many incremental technology advances could lead to significantly better EVs. Of course,… Read more »

Many of the best-selling EV charging stations on Amazon are not safety-tested and certified

  Most major retailers require that electrical products sold in their stores undergo third-party independent safety testing and certification, Amazon does not. After Charged encouraged the company to change its policy for EV charging stations, an Amazon spokesperson provided this official comment, “We monitor the products sold on our website for product safety concerns, and when appropriate, we… Read more »

Seaworthy EVs: Leclanché designs and manufactures Li-ion cells and systems

The advantages of electrifying transportation are far-reaching. Advanced energy storage systems are even making their way into the commercial marine industry. There are many marine applications in which adding a large Li-ion battery pack makes a lot of sense. The best-use case varies depending on the boat size and purpose. All-electric ferries, for example, are… Read more »

Turnkey drivetrains: UQM, Eaton and Pi Innovo collaborate to help build better heavy-duty EVs

We write about electric buses a lot at Charged. That’s because, as our July/August cover story pointed out, we think that e-buses will inevitably become the top choice for cities and municipalities. This could happen a lot quicker than many people realize, and some have predicted that transit buses will be the first segment in… Read more »

ITT Cannon introduces new fast charging hardware to the next generation of EVs

The future of the EV industry is bright. We’re losing count of all the planned EVs that automakers have in the pipeline. And it seems increasingly likely that they will follow through with those plans. If there’s one thing everyone agrees on, it’s that all EVs in the near future will have a range of… Read more »

LORD Corporation builds on its work potting electric motors, reducing hot spots by up to 40%

In 2013, Shafigh Nategh completed his doctoral thesis on the thermal management of high-performance electrical machines at the KTH Royal Institute of Technology in Stockholm, Sweden, and by 2014, the results of his doctoral work had begun to pique the interest of some heavy hitters in the electric motor industry. For his thesis, Nategh designed… Read more »