Homebuild DC motor controller

This video is about a completely homemade high voltage high amperage DC motor controller, the controller can perform at voltages above 120v and 600A, on this video is a first test run where the controller was tested at high voltage, the next test will be a performance and load test in the electric car car.

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DC motor controller
Homemade DC motor controller for high voltage ( up to 192V ) and midium current ( 30A konst )

DIY IGBT Motor Controller
Upgrade from my first video: http://www.youtube.com/watch?v=iU0KLyCgTHk Again a 1 quadrant PWM motor controller, made from IGBTs instead of MOSFETs. Also, the upgraded motor - both for my go-kart project. See my blog at will-ev.blogspot.com For people asking for schematics - for now I won't provide one, maybe when I have time. It's really simple. Two "single" IGBTs - one used as a switch, which connects Motor- to Battery-; the other as a freewheeling diode from Motor+ to Motor-. An IGBT snubber (blue) across the switching IGBT - just a ~0.6uF 600V cap, there are more complicated ones but you have to choose those more carefully. A capacitor bank across Battery+ and Battery- made with electrolytics (~30mF) and polypropylene (~5uF) and one $12 MLC ceramic cap (designed for switching power supply). Get yourself an IGBT driver, but I used a MOSFET driver instead - takes 5V PWM from microcontroller and outputs huge currents to quickly charge/discharge the IGBT 0 to 15V. (really should be -5 to 15V but I was lazy) All the high current paths must be low inductance. Notice the amount of copper I used! Oh, lastly connect Motor+ to Battery+ to complete the circuit. So, when IGBT is ON, current flows B+ to M+, through motor to M-, through switching IGBT to B-. When IGBT is off, the current flows from M- through freewheeling diode to M+. As in, it continues to flow through the motor in its original direction through the motor from M+ to M- because of its inductance (and possibly because it's generating too). Use this thread for learning: http://ecomodder.com/forum/showthread.php/paul-sabrinas-cheap-diy-144v-moto r-controller-6404.html#post78198

Cheap DC Motor Controller
Disclaimer - This does not have any TORQUE! Also messing around with electricity is dangerous and you should NOT attempt anything you see in this video.

DC motor controller for 48V 2kW
This is my v2.0 controller for DC motor controller that I'm using on my electric aprillia .