Variable Frequency Drives (VFD's) are used to vary the speed of an electric motor
Understanding pump curves 4: variable speed – the answer to all your prayers? - Pump Industry Magazine
HVAC Variable Speed Pump Curve Control: Part 2 | R. L. Deppmann MMM
Practical case 2: Operation of variable speed pumps in parallel - YouTube
How to Pick a Centrifugal Pump Part 10: Over-Speeding an HVAC Pump Using a VFD —
VFD for Centrifugal Pumps
Reading a Centrifugal Pump Curve | Pumps & Systems
Can Variable-Speed Drives Increase Process Efficiency and Reduce Energy Use?
Selecting the Proper Centrifugal Pump Circuit Flow Control | 2019-09-23 | Engineered Systems Magazine
Variable Speed Drive (VSD) Archives | Vertiflo Pump Company
Comparison of fixed speed and VFD pump power curves. | Download Scientific Diagram
Watch out with variable speed pumping | Chemical Processing
Variable Frequency Drive System Efficiency – Part 2 | A Field Perspective on Engineering
CSV vs. VFD Discussion, Am I missing something? - Pump engineering - Eng-Tips
Application considerations and estimated Savings for VFD Drives
Watch out with variable speed pumping | Chemical Processing
Pump performance curves: (a) Constant speed, (b) VFD. | Download Scientific Diagram
DOE Indexes for Pump Efficiency Require Close Analysis | Modern Pumping Today
Back to Basics
Variable Speed Drives
Hydronic Pump Balance using the VFD with a Triple Duty Valve | R.L.D.
Three Types of Curve Control for Variable Speed Pumping Systems —
VFD Variable Frequency Drive and Centrifugal Pump • OEM Panels
The “two-thirds” Rule for Locating Sensors to Control Variable Flow Systems – Part 3 | A Field Perspective on Engineering
