H∞ drive control strategy for mining electric locomotive

This paper discusses different drive control methods of mining electric locomotive, presents a novel H∞ robust drive control strategy for a mining electric locomotive. Research work is done under different conditions namely variable battery voltage and variable load rotational inertia separately. A comparison between conventional PID control method and H∞ robust control method is done when they are applied to the above mentioned conditions. Under the drive condition, simulations results both indicate that PID controller and H∞ robust controller give good results. However, the H∞ robust controller gives a faster response and a better stability. Moreover, H∞ robust control follows the given current faster and more smoothly than by PID control and improve the drive range of mining electric locomotive.