Dynamic compensation of non‐active power using the fbd method ‐ basic properties demonstrated by benchmark examples

Abstract

AbstractFor the most general case of electrical polyphase circuits under non‐sinusoidal, unbalanced but steady‐state working conditions there are different definitions of active quantities needed for power transfer and non‐active quantities which could be compensated without changing the average power transfer. In practice normally the load is varying with time, therefore it is interesting how the definitions of power quantities can be extended to dynamic working conditions and what are the results of compensating non‐active quantities in such cases. Even if the load does not change with time after the start of a controllable compensator, the complete system is time varying. For this case it is shown how the non‐active quantities as defined within the FBD Method can be determined under dynamic conditions. For two simple circuits simulations are presented which show the dynamic performance of an ideal controllable compensator with a control scheme based on the FBD Method.