Analytical and experimental investigation of a wound-rotor variable-speed, constant-frequency generator for small wind energy systems
Abstract
The use of a wound rotor variable speed, constant frequency generator with small wind systems was investigated. The main initial objective was to demonstrate proof of concept under controlled conditions. The feasibility of this application was confirmed and it was shown that improved performance could be expected over a constant speed, constant frequency generator systems. The ability to maintain a constant tip speed ratio near the maximum rotor performance coefficient over a wide range of wind speeds is noted. A substantial increase in annual energy output can be expected from VSCF operation. Controlled start up and shutdown can also reduce the high transient torques and concomitant inrush currents common to induction generator systems.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- October 1982
- Bibcode:
- 1982STIN...8333076H
- Keywords:
-
- Computer Techniques;
- Control;
- Dynamometers;
- Electric Generators;
- Induction;
- Inverters;
- Rotors;
- Torque;
- Electric Equipment;
- Machinery;
- Measuring Instruments;
- Performance Tests;
- Turbomachinery;
- Wind Turbines;
- Electronics and Electrical Engineering