A drive is the digital camera that harnesses and regulates the electrical energy sent to the engine. The 
drive feeds electricity in to the motor in varying amounts and at varying frequencies, thereby indirectly controlling the motor’s velocity and torque.
So the many economical Electric Drive Motor china choice will be a Three Stage Induction motor accompanied by a BLDC electric motor. I’d suggest BLDC ( for its huge market penetration in recent times,ease of availability and easier consumer electronics/control ) or PMSM (Long lasting magnet synchronous motors )