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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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





How to build the simplest DC Motor Speed Controller(Using Potentiometer and MOSFET)Updated
PLEASE FOLLOW THIS UPDATED VERSION: https://www.youtube.com/watch?v=qmeENqruvZs READ ME! Connect a heatsink to the MOSFET POT can also be used to directly control a motor. But it needs to be a high power POT (unless the motor is really low power) This circuit is very inefficient(but its really simple!) in controlling high power(torque) motors. To control such motor you're better off with PWM. PWM is much more efficient. Here's a video showing how to build PWM speed control https://www.youtube.com/watch?v=RRLyoV-SCfc Please comment if you tried building this circuit !! and hit like if you liked and dislike if you didn't like this video. Refer the "Connections Diagram" frame in the video for connections. This the simplest way to control the speed of a "normal" DC motor. The MOSFET is configured as a source follower. The output voltage is gate voltage minus threshold voltage. The variable resistor(Potentiometer,"POT") controls the voltage at the gate. The voltage at gate with reference to source(Vgs) determines the current flow through the motor. When the Vgs reaches around 2v the channels starts to open, as we keep increasing Vgs ,the channel becomes wider allowing greater current to flow.





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





H Bridge Motor Speed Controller Tutorial
An explanation of H bridges (a type of motor control circuit). I also show you how to build a bidirectional motor speed controller. Website: http://www.afrotechmods.com ----===Click "Show More"!===---- Parts: NE555 timer: http://octopart.com/partsearch#!?q=NE555 N-channel MOSFET: http://octopart.com/partsearch#!?q=psmn022-30PL.127 P-channel MOSFET: http://octopart.com/partsearch#!?q=FQP27P06 You can support my videos by browsing my recommended equipment page: http://astore.amazon.com/afromods-20 Or if you are feeling extra generous, bookmark this link and use it as your Amazon home page: http://www.amazon.com/?_encoding=UTF8&camp=1789&creative=9325&linkCode=ur2& tag=afromods-20 If you do that, I get a percentage of everything you buy, and you don't have to spend an extra dime!




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