Adaptive Control Scheme of BLDC Drive Enhance DSTATCOM Operation in Power Distribution System

Abstract

This concept proposes a hybrid control algorithm to maximize utilization and functionality of distribution static compensator (DSTATCOM). This control algorithm combines the different aspects of DSTATCOM operation and tries to mitigate the voltage and current harmonics, balance the source currents, improve the power factor, compensate for voltage disturbances such as sag and swell, reduce the losses and rating of inverter, and control the load power for energy conservation while analyzing their effects on the consumers. Moreover, at any time of operation, performance of proposed control algorithm based DSTATCOM is superior compared to its conventional counterparts. With all these advantages, proposed scheme provide a promising solution to enhance the operation of power distribution system. Detailed simulation results are presented to validate the performance of the proposed scheme. One of the main objectives of power distribution companies is to maintain load voltage within an acceptable voltage range while effectively managing the available power and   load demand. The DSTATCOM is operated to maintain load voltage and pf within the pre-specified range based on the requirement.

The wind turbine acts as a prime-mover for doubly fed BLDC generator. To make the system stable, proper monitoring is required or sometimes an auxiliary system can also be a good option, which can support the primary system during undesirable conditions.  The simulation results show a significant enhancement in shortening development time and improving dynamic performance of the BLDC motor compared to the conventional speed control of BLDC motor drive. The wind turbine acts as a prime-mover for doubly fed BLDC generator.