Recent content by zt3

Gee thanks for the info! :D Lots of sources indeed! I and my thesis mates are still on the process of analyzing the performance of our FP motor. And yes you're right! Cogging is really a big factor in our prototype. The simplest way to do is either file off the edges or skew the stator slots...

Actually, we provided a 1mm air gap between the neo mags and iron core.. Still the same result - the motor couldn't spin by hand... Anyway, we haven't considered decogging the stator as we haven't had enough time doing it. But we're pretty sure it would increase the motor efficiency by a...

Hey Matt! Thanks! Long time no hear! I think the hall wiring you meant was for phase 5 type as seen here: http://www.angelsnz.net/ZL3SV/misc/F&P%20Service%20manual%20517735.pdf Regarding neo magnet, what grade did you use for it? We tried using neo mags a year ago, but due to strong attraction...

Gee thanks! I bet neo mags would really kick ass over stock ferrite magnets. We tried however using N51 magnets a year ago but we noticed that due to strong attraction of neo magnets to the iron core, the motor couldn't spin freely by hand. Is that normal? Would the motor still run in that case?

Ei guys! I finally got it to work! Thanks to our adviser who suggested replacing the factory sensors to e-bike halls. The whole motor is from Fisher and Paykel including stator and rotor. Stator is originally wound as 60S and rewired into parallel (60P) to increase its current carrying capacity...

Just as we expected! Replacing the stock hall sensors with EW-512 halls could effectively run the F&P motor! Just make sure to place them in the original setting and set them at the center in between teeth (as suggested by Matt Lyons from another thread). Everything should be well. Will post...

NZBen, I and my thesis mates experience the same problem as yours. At first we doubt we have interchanged the polarity of the power supply of the sensors. We even got 3 units of it testing what really is the functional one. Unfortunately, all exhibit the same behavior. Also, we got a measurement...

I and my friends tested our Fisher and Paykel motor with the following specifications: 60S stator wired in parallel (60P) 42 slots, 28 pole pairs Star connection Current Rating is 20A Hall Sensors are from F&P Smart Drive Magnets with steel liner fitted in an Aluminum enclosure instead of...

We tested our motor with 12 out of 36 possible combinations this afternoon. All of these 12 combinations have second phase wire from motor matched with second phase wire of the Lyen controller (the green one). Sad to say, some exhibited the same issue while others exhibited an oscillation like...

I had a chat with Matt Lyons this morning and he also suspects that the sensors were faulty as he had experienced the same issue in the past. Also, I noticed that only two hall sensors displayed a voltage relative to ground while the other one is approximately zero or nothing at all. I'll try to...

I and my friends tested our Fisher&Paykel hub motor with Lyen's 12 FET controller (5k pot used as throttle control) last weekend. Unfortunately, all 36 combinations exhibited a single movement/step (as I rotate the pot halfway) and then came to a stop. Just a little bit of info, we rewired the...

Ei guys, I need help ASAP. I and my friends tested our F&P motor with Lyen's 12 FET controller (5k pot as throttle control) last weekend. Unfortunately, all 36 combinations exhibited a single movement/step (as I rotate the pot) and then came to a stop. Just a little bit of info, we rewired the...

Hi! Can I use this Kelly KBS72051,20A,24-72V BLDC Motor Speed Controller for Fisher and Paykel Motor? KBS programmable BLDC motor controller provides efficient, smooth and quite controls for electric motorcycle, golf cart, go-cart, as well as industry motor speed or torque control. Motor...

It really inspires how Lyen responds to his clients' needs in a very professional way (knowledgeable in his stuff, fast reply in Emails, reliable to transact with). Just a little OT, how much did it cost you for the Cycle Analyst? Kindly PM me the price in USD. Thanks! :)

I've had a nice chat with Edward Lyen lately and he seems to be a really good source of information regarding brushless motor controllers. He also provided a user-friendly procedure on how to use the controller on his website. Easy to understand too! As of now, I'm counting on his Infineon...