[Zak650]

Originally Posted by aravindzzz

I am an Electrical engineering student. As our final year project we are planning to make an EV. We are aiming to convert an old car into an EV. We got a small car which has things till the gearbox. We wanted to make the controller from scratch... soo any one has any ideas or any links which may help me in making a controller ?? We dont want the manufactured one.... we are aiming at buillding one ourselves....

Hi,
You might consider converting an industrial variable frequency drive to be powered by DC and work for an EV.

[Hollie Maea]

Originally Posted by joamanya89

Hi, I will answer you on a longer mail in a few hours, but i'll need you to explain me a bit more (kind of translate) of a few things you have said before so I will be able to answer you more presisely, what means or what is "6 igbts" and "snubbers".

Sorry but is the lenguaje problem...

No problem. The IGBTs are "Insulated Gate Bipolar Transistors" which act as switches in the power stage. Generally you use six of them for a 3 phase inverter.

A snubber circuit is a circuit to minimize voltage spikes during switching events. Inductors (which is what your motor is) resist changes in current, and this resistance is manifest as voltage spikes. Snubbers use capacitors or diodes to limit these transient spikes.