I would like to enhance the torque out of motor by enhancing the dimensions as i have the flexibility to increase the dimensions....In this context I am not changing voltage and current....by doing so, i observe the back emf is increasing and it is beyond the voltage limit which is against the principles....How to overcome this issue...
Can I change the input parameters to the motor to enhance the torque??? May i know what is the principle to enhance the torque density of motor?
V=Eb+IaRa, Eb= OZNP/60A, hence for same applied voltage and DC motor the Ia could be increased(rated),by reducing O the field flux, the field current, without changing voltage and currents could be done by decreasing Z,N,P or increasing A…….
Hello Bhupendra sir....
I am very much thankful for your review..,i am working on pm assisted synchronous reluctance motor.....
Hello Sampath,
It reminds me of a nice paper from the guys at MIT who designed their Cheetah robot, and particularly the actuators:
https://fab.cba.mit.edu/classes/865.18/motion/papers/mit-cheetah-actuator.pdf
In section III.C, "Geometric considerations for electromagnetic motors", they explain two widely used constants named KT (torque constant) and KM (motor constant). They explain with simple equations how the torque and torque density are affected by the air gap radius and the stack length.