Motor Technology

If you've ever designed a controller for a low-speed EV—golf cart, resort shuttle, warehouse tugger—you've probably seen this complaint: "Full charge, it climbs fine. After 20 minutes, it just gives up on the same hill." The motor isn't broken. The controller isn't lying. It's field weakening, and more specifically, the lack of voltage headroom to do it properly. This post explains what f...

For those of us in the low-speed electric vehicle (LSEV) industry, there's a recurring theme during vehicle commissioning and customer handover: the parking brake. While top speed and range dominate spec sheets, the parking system is the single most frequent point of contact between the user and the vehicle's core safety architecture. It dictates not only safety but also ergonomics, NVH (Noise, Vi...

In electric vehicle maintenance, industrial equipment operation & maintenance, and traction motor after-sales troubleshooting, motor fault diagnosis is a frequently used and core fundamental skill. On-site misjudgment of motor conditions often leads to repeated part replacement, ineffective commissioning, and even customer complaints. This article organizes a standardized testing pr...