Hi everyone!
I am undertaking quite a large project for my final year at university, and need some pointers as to where to go.
Basically I will need to design a quite specific controller that is capable of feeding power to a motor (on the scale of 24v) and then receiving power in the form of regenerative braking, and storing it in an Ultra cap. The ultra cap will be an array of 2.5v 300 farad polymer ultra caps, set up in grid formation so as to keep the 300 farad capacitance, but raise the voltage output to 25v.
The controller should be able to know when the ultra cap has reached it's maximum charge holding capacity (albiet rarely) and instead switch the current to a heat dissapating resistor array, and inform the user (via a small LED?) that the ultracap is fully charged.
The user should be able to 'switch' on the power flow to the motor, but the switch back to regenerative braking should be automatic.
Another key requirement is that the controller itself be powered by the ultracap, and require no replaceable battery, thus making it maintenace free. Or have a power usage so low that a small Li-ion battery (or something similar) will be able to power it non stop for at least 10 years without replacing it.
Obviously the user will have to regeneratively brake before using the controller and thus it should not require initial processing power to charge the ultracap
I would like to try and come up with this on my own, so if you could give me topics of research and places to find them, then please do! However, I would also love some contructive feedback and your own ideas as to how to achieve this.... I'm pretty stumped as to where to start so anything would be fully appreciated!
Thanks for your time,
James
I am undertaking quite a large project for my final year at university, and need some pointers as to where to go.
Basically I will need to design a quite specific controller that is capable of feeding power to a motor (on the scale of 24v) and then receiving power in the form of regenerative braking, and storing it in an Ultra cap. The ultra cap will be an array of 2.5v 300 farad polymer ultra caps, set up in grid formation so as to keep the 300 farad capacitance, but raise the voltage output to 25v.
The controller should be able to know when the ultra cap has reached it's maximum charge holding capacity (albiet rarely) and instead switch the current to a heat dissapating resistor array, and inform the user (via a small LED?) that the ultracap is fully charged.
The user should be able to 'switch' on the power flow to the motor, but the switch back to regenerative braking should be automatic.
Another key requirement is that the controller itself be powered by the ultracap, and require no replaceable battery, thus making it maintenace free. Or have a power usage so low that a small Li-ion battery (or something similar) will be able to power it non stop for at least 10 years without replacing it.
Obviously the user will have to regeneratively brake before using the controller and thus it should not require initial processing power to charge the ultracap
I would like to try and come up with this on my own, so if you could give me topics of research and places to find them, then please do! However, I would also love some contructive feedback and your own ideas as to how to achieve this.... I'm pretty stumped as to where to start so anything would be fully appreciated!
Thanks for your time,
James