Industrial applications
Apparently the motor company's and schools never considered telling engineers they could run the vfd/ motor over 60 cycles , say 100 cycles.
The advantages are 2X power and a wider torque range (with 2X gearing ),
" enhance gearmotor performance significantly by increasing stability , by reducing inertia mismatch,widening the available speed range,eliminating motor overheating at low speeds, and enabling the use of smaller motors"
They are not talking about 200,300 or 400 hz.
This was in Machine Design , May,2018
I think this lac of understanding hindered the EV movement greatly.
Apparently the motor company's and schools never considered telling engineers they could run the vfd/ motor over 60 cycles , say 100 cycles.
The advantages are 2X power and a wider torque range (with 2X gearing ),
" enhance gearmotor performance significantly by increasing stability , by reducing inertia mismatch,widening the available speed range,eliminating motor overheating at low speeds, and enabling the use of smaller motors"
They are not talking about 200,300 or 400 hz.
This was in Machine Design , May,2018
I think this lac of understanding hindered the EV movement greatly.