SYSTEM AND METHOD FOR PROTECTION OF A WIND TURBINE BATTERY BACKUP PITCH CONTROL SYSTEM

摘要

A pitch control system for a wind turbine includes a backup battery bank assigned to each pitch drive motor, with each battery bank having a plurality of individual batteries connected in series. A battery charger is connected in parallel across each battery in the battery bank. A protective circuit is configured with each battery charger and includes a voltage comparator circuit that detects a reverse voltage applied to the battery charger above a threshold value to isolate the battery charger from the reverse voltage.

主权项

1. A pitch control system for a wind turbine, wherein the wind turbine has one or more rotor blades coupled to a hub and a pitch drive motor assigned to each of the rotor blades, the system comprising;
a backup battery bank assigned to each pitch drive motor, each battery bank having a plurality of individual batteries connected in series; a battery charger connected in parallel across each battery in the battery bank; a protective circuit configured with each battery charger, the protective circuit comprising a voltage comparator circuit that detects a reverse voltage applied to the battery charger above a threshold value to isolate the battery charger from the reverse voltage.