uncleflo
Registered since September 28th, 2017
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Tag selected: mosfet.
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Open ReVolt Project Forum
Saved by uncleflo on July 19th, 2014.
Freeway capable EVs are more expensive than slow EVs because you need more batteries (sometimes: could use buddy pairs at lower voltage) and a high voltage controller. The same motor can often still be used, just by advancing the brushes, and maybe adding a blower to keep it cool. So, it seems to me that the best place to focus efforts to making freeway capable EVs more affordable (under $1500?), is to focus on the controller. About $1200 or so can be shaved off the cost of a new controller.
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en/BrushlessCtrl - Wiki: MikroKopter.de
Saved by uncleflo on July 16th, 2014.
The Mikrokopter is powered by brushless motors. However, to use such motors the direct current of the batteries has to be converted to an triphasic alternating current) with power output controled so that the speed of the motors can be accurately controled.There are numerous brushless speed controlers available on the market. However very few are available which can fulfill the special requirements: We need brushless controlers which can accept a new throttle value very rapidly (< 0.5ms) and implement it. In addition the controler has to have an I2C bus interface.
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Robot Power Product Info - Open Source Motor Control (OSMC)
Saved by uncleflo on July 16th, 2014.
The OSMC is a high-power H-bridge circuit designed to control permanent magnet DC motors. It was designed expressly as a motor control for robot combat in competitions such as BattleBots™ and the like. However the attributes of a controller for such an environment are suitable for a wide range of commercial or industrial motor control applications. The OSMC can drive a wide variety of motors and other loads and is easy to mount and interface to a variety of microcontroller units. The low-cost OSMC is also easy to modify or repair if needed.
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