Recent content by jlcortex

Ok, thanks!, i want to build this small PCB and use SMD sensors, Let's see if this works!

Hi, could you review my math? I have made the calculations according to what I have understood reading this thread but the result seems strange to me because they are very close The motor has 28 magnets and 24 slots 28/2=14 electrical revolutions 360/14 = 25.71 degrees for each electrical...

Hi all, I am working working on a 600V/600A sensorless inverter than can work on ACIM, PMSM and BLDC using FOC sensorless with a firmware called InstaSPIN (Texas Instriuments) I like InstaSPIN because we have been testing some other FOC algorithms*and InstaSPIN give better results, Especially...

some pictures of the process

I have built the motor and tested it in short-circuited stator I am using a motorcycle chasis dyno to measure torque. I accelerate the roller (flywheel) and measure negative torque until roller stops. It gives me about 19Nm when it should be something about 90Nm I think I made a mistake, I...

Hello, someone has tested FF600R06ME3 from aliexpress?, prices are 1/4 the price at mouser! about 40€, is it possible?

hello all, I want to make a motor-generator of about 22kw based on this existing stator: It is 48 slot 126mm internal diameter, it is for a 16 magnet rotor I would like some advice. I am drawing a IPM rotor because it seems easier than external magnets and more robust. I thought about a V...

Peters, At the moment I bought 6 IGBTs on EBAY, "Semikron SKM400GB126D IGBT Modul 1200V 470A", they are used, and have cost € 38 each. The capacitors are not selected, but I have seen that now the film DC-link capacitors are very popular and afordable. About software, i am thinking to use...

Testing a 7.5kw motor with Sensorless FOC and a power supply of 32V! 7JtActRfVlo

Hi, I have been working all the Christmas holidays on this project. Probably too much ambitious project but I would like to do something important. It is maintly focus to rewinded induction motors, I help to test a rewinded 5.5kw induction motor, we get 32kw mechanical power on a brake...

Hello Galp, I am interested in a couple of this PCBs Do you still have PCBs availables?

I just realized that the 12V hub motors are not very popular, but some items can be found: https://www.alibaba.com/product-detail/Brushless-Hub-Motor-12V_60612467592.html?spm=a2700.7724838.2017115.115.73b278a5MKzt68

Hillhater, I am meaning 12V hubmotor spinning at 5X the nominal speed so it will be 60V, rated current will be about 42A. The hub motor is a huge electric motor, the power is low because the RPM is very low, but I think nothing prevents the engine from spinning much faster than it does on a...

I like horizontal wind turbines. About hub motor, I see hub motors very simple, reliable and cheap. I am thinking about use a 500W 12V hub motor at 5X the nominal speed to get 2500W, it is very big motor, i think 2500W is not problem if it spin 5 times faster.

I'm thinking of starting a serious project In my opinion if you build a wind turbine you have to make it big, What do you think? Rotor diameter = 5m A 5m rotor can get more than 5000W but I would like to optimize for slow wind, about 6m/s, I am calculating 2500W or so. I am thinking to build...