Comprehensive comparison - excellent
The efficiency of the system is 95%
The least amount of manual maintenance, the least amount of hidden security threats
There is no need for any investments in components and individual parts
Can realize high power drive, wide range
The replacement is performed at one time, low volume of transportation
The speed can be infinitely adjusted
The least number of stages and maintenance volume
Small area of occupied space
Synchronous motor is a permanent magnet drum operating with a frequency converter
MINGTENG Permanent Magnet Drum Motor
Comprehensive comparison - negative
System efficiency 70%-80%
Large amount of manual maintenance, quite a lot of hidden security threats
Investments are necessary for the maintenance, repair and replacement of all components, the highest costs
Any power can be used, wide range
There are relatively many replacements, many stages of analysis, difficult work and a large volume of transportation
Poor speed control properties
Many stages, a large amount of maintenance
Large area of occupied space
Complex design: asynchronous electric motor + hydraulic coupling + gearbox + high/low-speed coupling → drive drum + frequency converter
Classic with electric motor, gearbox and hydraulic coupling