Browsing All Posts filed under »Motors«

Hm, upgrades.

October 22, 2014


One of the problems we’ve been having from the start is that the motors I used were recycled from a couple of electric scooters and not only they are kind of weak, they are also unequal: one is 200W nominal and the other 240W. This wasn’t too apparent until recently when we implemented regenerative braking, […]

New heat sinks on the bridges

September 1, 2014


Njay: I’ve built the new heat sinks for one of the bridges. It’s got a lot more air surface than the previous ones. The downside is that they won’t fit in the old boxes any more. Vnevoa: Cool, that’s good to hear. Never mind the boxes, I’m going to revisit the whole fixation to the […]

SoapBox MkII system bring-up

December 7, 2011


Last weekend we had loads of fun. We got to join most of the parts that comprise the SoapBox’s control and power system and we fired it up. No smoke (this time)!  🙂 As usual, there’s a lot of video for you to watch.

Hybrid Electric Motors?!

December 31, 2008


Well, what do you know, there actually exist hybrid motors! 🙂 Basically, when an electric motor has a stator with both electromagnets and permanent magnets, that’s a hybrid motor. It’s called hybrid because it is a cross-breed between a Permanent Magnet Motor and a Variable Reluctance Motor (which has a purely ferromagnetic rotor with salient […]

Motor control and efficiency

January 20, 2008


I’ve posted a lot about the motor I’m trying to build, but I don’t think it is yet clear what kind of motor it is. This may look unimportant, but trust me that it becomes very important when you’re trying to find the right kind of electronic power controller to get the thing spinning. 😉

Motor design – reinforcement

December 15, 2007


My first simulation of the motor showed a 1 ton force attracting the rotor disc to the stator disc, whether the motor was on or off. This is caused by the permanent magnets “wanting” to connect to the nice flux-conducting electrical steel cores, and has several undesirable effects, one of them being the probable self-destruction […]

Motor design – alternative 1

December 13, 2007


So NJay already has a proposal for the motor design that removes the burden of the static “mega-force” that was detected in my initial design. He sent me a few 3D sketches (made with “Google Sketch-Up”) of a different orientation for the stator and rotor. He chose to go back to basics and adopt the […]