Application of an Additional Controllable Load (ACL) with chopper connected to the Direct Current Link (DCL) of an autonomous Wind Energy Power System (WEPS)
Abstract
An ACL consisting of a (fast) thyristor chopper with indirect commutation and loaded by a resistor is described. The ACL provides a reduction of grid voltage distortions, reactive power of the WEPS diesel generator, and the amplitude of higher harmonic currents in the autonomous grid. Ripple currents in the DCL are limited by the connection between chopper and DCL. An additional choke is connected in series with the existing choke in the DCL. Chopper and a smoothing capacitor were connected with one pole to the junction of both chokes. A resonance circuit is formed using chokes and capacitor. The resonance frequency is chosen such that no impermissible oscillations occur in the DCL. Equations to calculate components of the DCL and chopper for their dimensioning were derived. In an experimental set-up consisting of a part of the WEPS, measurements were carried out.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- May 1984
- Bibcode:
- 1984STIN...8630926S
- Keywords:
-
- Electric Current;
- Energy Technology;
- Frequency Control;
- Voltage Regulators;
- Wind Turbines;
- Windpower Utilization;
- Electric Connectors;
- Electronic Control;
- Resistors;
- Thyristors;
- Communications and Radar