I have stumbled on the general BLDC torque equation :
Te = B_m *B_s*sin(angle) [ 1 ]
where B_m is magnetic field flux
B_s is stator field flux
angle: the angle between the B_m and B_s
I am doing a simulation of the brushless dc motor. To see the torque with time I am using:
Te = Kt ( ia *fa + ib*fb + ic*fc) [2]
where:
Kt: torque constant
ia ,ib ,ic phase currents
fa,fb,fc: function related to back-emf
How can I use equation [1] to get same results of equation [2]
Hello,
Could you explain where you obtained the first equation and second equations?
To better understand your question, are you looking for an expression of the torque in relation to the position of the rotor, or an expression of the total torque of your machine with time? What do you mean by simulation? Are you trying to compute the maximum torque from simple parameters that you found on a datasheet?
Best,
Guillaume
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