- #1
digglesby
Hi everyone - here's a concept that I'd like a few opinions on:
As part of a project, I'm looking at using a brushless DC motor mounted on a high-speed vehicle as a generator. Once the vehicle hits its top speed, the batteries should disconnect from the motor and the vehicle's own velocity will cause the motor to generate an AC current (through wheel rotation). This current would then be rectified and used to power EM eddy current brakes that slow the vehicle down far enough that disc brakes can be used. The end goal here is to calculate a braking force curve as a function of motor rpm.
A couple questions:
1. I have no idea currently on how to calculate how much power a given motor would generate at a given velocity v. What's the best way to tackle this? Calculate P = w * torque with a torque curve? What's missing is some sort of manufacturer's data.
2. Some sort of special controller would be needed - I'm a bit of an ignoramus here.
Thanks for reading and for your time!
Jon
As part of a project, I'm looking at using a brushless DC motor mounted on a high-speed vehicle as a generator. Once the vehicle hits its top speed, the batteries should disconnect from the motor and the vehicle's own velocity will cause the motor to generate an AC current (through wheel rotation). This current would then be rectified and used to power EM eddy current brakes that slow the vehicle down far enough that disc brakes can be used. The end goal here is to calculate a braking force curve as a function of motor rpm.
A couple questions:
1. I have no idea currently on how to calculate how much power a given motor would generate at a given velocity v. What's the best way to tackle this? Calculate P = w * torque with a torque curve? What's missing is some sort of manufacturer's data.
2. Some sort of special controller would be needed - I'm a bit of an ignoramus here.
Thanks for reading and for your time!
Jon