increase 12v DC motor start torque?

[supak111]

Is there any easy way to increase a 12v DC motors starting torque?

I just need a bit more power to get the motor going. I know adding more V would do it but I can't do that since the motor is in a car so it constant 12v power lots of amps.

Can a cap help?

 

[supak111]

Found some cheap 12v DC to 24v DC step up power supplies but those would make my motor run continuous 24v, I just want say 24v for maybe 1 second at start to get the torque and then back down to 12v so that the motor doesn't overheat.

 

[alex2701801]

Found some cheap 12v DC to 24v DC step up power supplies but those would make my motor run continuous 24v, I just want say 24v for maybe 1 second at start to get the torque and then back down to 12v so that the motor doesn't overheat.

connect a high value charged capacitor in parellel with motor.It will aid the battery at start.

 

[KMoffett]

connect a high value charged capacitor in parellel with motor.It will aid the battery at start.

The capacitor across the motor will do just the opposite. When power is applied it acts as a dead short. It will have to charge up, reducing the voltage to the motor until as it fully charges.

Ken

 

[KMoffett]

Found some cheap 12v DC to 24v DC step up power supplies but those would make my motor run continuous 24v, I just want say 24v for maybe 1 second at start to get the torque and then back down to 12v so that the motor doesn't overheat.

That would work. You would need a timer driving a SPDT relay. Or maybe a solid state switch, as the relay's switching time might cause a temporary dropout as it switched from 24V to 12V. I can't say that 24V for a short burst is OK for your motor though.

Ken

 

[Tha fios agaibh]

By the time you add a ps, timer, and a relay, you might be able to purchase a larger motor to give the required torque?

I would also investigate that the wire size to the motor is sufficient, to minimize voltage drop.