Jonca
10 mW
Hub motor with dual motor and planetary gear. Does such thing exist? If not, why not?
In automotive for example Toyota Prius is using planetary gear with ICE and electric motor forming Continuously Variable Transmission. And Revonte has developed an e-bike mid drive with the same idea using two e-motors. But I haven't found any hub motors like this.
I understand it could be difficult to fit two motors in hub. But since they would always be running high rpm they could be much smaller than in traditional hub with planetary gear? I was playing with the calculator and it seems that if the power output would be from the planet gear carrier (which could be challenging to put into practice I believe) and the motors on sun and ring gear. Both motors would have quite big reduction ratio to output.
I am not any e-motor expert so I am wondering if it is impossible to have two e-motors in close proximity due to magnetic fields effecting on each others.
In automotive for example Toyota Prius is using planetary gear with ICE and electric motor forming Continuously Variable Transmission. And Revonte has developed an e-bike mid drive with the same idea using two e-motors. But I haven't found any hub motors like this.
I understand it could be difficult to fit two motors in hub. But since they would always be running high rpm they could be much smaller than in traditional hub with planetary gear? I was playing with the calculator and it seems that if the power output would be from the planet gear carrier (which could be challenging to put into practice I believe) and the motors on sun and ring gear. Both motors would have quite big reduction ratio to output.
I am not any e-motor expert so I am wondering if it is impossible to have two e-motors in close proximity due to magnetic fields effecting on each others.