First controlled run of RX7 EV on homemade controller

This is the first test run of the RX7 EV on my home-made controller. The controller is still on the breadboard at this point. The arching sound is there because this test-run was done without the snubber diodes installed. 32vdc on tired NiCad's. Now to actually assemble the whole deal.

Category:

Autos & Vehicles

Tags:

• EV
• electric
• vehicle
• RX7
• Mazda
• RX-7

[bablo98]

what type of motor ar eyou using ?

[AudiMouse]

It's a 12" Baker Forklift motor modified to operate with 120v

[lazzer408]

IGBT huh... Hows the project going? I need to build a controller for an ev motorcycle im doing. I could mod a curtis I guess. 120v

[AudiMouse]

Yeah, I've been experimenting with IGBT's and MOSFET arrays. The IGBT is a little tougher to control because of the need to turn it on AND off, where the MOSFETs are normally 'open' and 'close' only when the gate is energized. I've heard references to modifying Curtis controllers in several places, and am very curious what's involved to increase the voltage capability of an old Curtis. Any information you could link me to would be much appreciated.

[Odziz]

Homemade controller, neat. But whats that rattling noise ?

[AudiMouse]

That's the sound of not having the snubber capacitors installed. It's pretty much silent now that those are hooked up. More videos once I get a chance.

[paytontech]

@AudiMouse Could you just have a voltage rail specifically to "pull up/down" the IGBT gate so you don't have to cover that process in your control algorithm?

[djmomocrx]

great ! and still rotary !!! ( in other way ) all the electric engines have a rotor inside !!!

[vid009a]

what type of motor ar eyou using ?

[Dilekz]

IGBT ON and off?? you mean Puls With Modulation. Just get yourself a microcontroller.. PIC or something to do that.

Connect a Potentio meter to the PIC ADC port and then make a little program that converts it into PWM.