Thank you for your comments
In my opinion a configuration with a VFD and a fixed displacement pump is superior to any other configuration including a variable displacement pump (VDP) driven by an induction motor. I assume that both systems are configured without PID loops. The VFD option is...
I want to use a VFD to drive a fixed displacement pump to control the speed of a hydraulic cylinder in a very wide range of pump speeds(flow) (10%-100%).
What type of a pump should I use ( gear,vane,piston)?
Any suggestions reg. manufacturer and model ?
What are the problems when running the...
