Update: 2 Controllers Left

 

Update: only 3 available.

This controller has been designed to be one of the most versatile DC motor controllers on the market. It can be used in all sizes of on-road and off-road electric vehicles utilizing systems from 24~192 volts. Although the controller is optimized to regularly provide 750 amp accelerations the controller is fully adjustable allowing short duration current limits up to 900 amps.
The DC750 has a patented design feature which
reduces power loss; it switches faster and more
efficiently thereby producing less heat. However
some cooling is still required. On a vehicle less weight means better performance and more range so the DC750 needed a cooling scheme that was simple and light weight. In a liquid cooled system the coolant must move hot liquid from the heat source to a radiator which is either fan cooled or exposed to a large volume of cold air. Ultimately this means even liquid cooling still requires the excess heat transfer to the air. So rather than add the extra weight and plumbing required simply to move the heat to a different location to be fan cooled the DC750 cuts to the chase and uses an aggressive forced air design to effectively transfer excess heat directly to the air.
The DC750 is high side topology which offers reduced motor and brush corrosion risk over less expensive controllers. Also the power stage is fully isolated from the control wiring thereby reducing shock hazard. The CAN communication system is also fully isolated to ensure noise free real time communication. This feature rarely exists on other controllers. The case is also fully isolated from all internal circuitry making it easier to install without adding additional mounting insulators.
Another feature that sets the DC750 apart is the user interface. Advanced microprocessor technology allows reprogramming or recalibration of the system while installed, via the Synkromotive interface (SMI). The Synkromotive interface also allows the user to view data in real time, in both text and graphical formats. In addition, the on-board flash memory provides a nonvolatile backup of all system parameters and settings.
The DC750 has built in +12 volt output contactor coil drivers that allow the user to confugure the controller to work in the various common electric vehicle configurations. Unlike software only systems in some cars all contactor outputs can be “manually overridden” and disabled by simply turning off the “key” and thereby removing power to contactors. Also a built pre-charging system is in place to extend the life of the main contactor as well as provides a pre-power up safety check.
These are a just a few of the many design details that went into the Synkromotive DC750 motor controller.

 

http://greenev.zapto.org/synkromotive/Synkromotive/Blog/Blog.html

 

http://whitespacesstudio.com/andrewmac/synkromotive/Synkromotive/Blog/Blog.html

Not all of this is working but if needed you can PM me.

 

2 more available if any of you are interested.

 

Still have one at the house ready to ship if anyone is interested.

Pete

 

One still available. New and ready to ship

 

Bumping to the top again. Brand new little powerhouse of a controller for those still wanting to do a decent little DC system for their vehicle.

Pete

 

what's your price on these?

 

$1300 including shipping in the US. Outside like in Canada you will have customs charges which you must pay.

I can possibly get one more after this one is sold.

Pete

 

Is there any flexibility on the max pack voltage? I have 60 cells in my pack and it seems to sit around 200 volts but up to 210 volts for charging.

I'd rather not have to reduce my pack size.

 

60 cells of LiFePO4 cells are the limit. The max nominal voltage is 192 volts and 60 cells calculated at 3.2 volts is 192 volts. So a charged pack at static levels of 200 plus some is fine.

Im going to be running 60 cells in my little Red Bug when I get it back from evmetro. The Beta version was limited to 156 volts. But that is still good.

Pete