A Control Strategy Based on Fuzzy Logic for Levelling Load Power Fluctuation by Using Superconducting Magnetic Energy Storage —Discussion on scalling factor and improvement of control results—

For the purpose of the effective use of the power facilities, the control strategy for the leveling of the active power and the compensation of the reactive power is proposed based on the fuzzy logic using small capacity of the superconducting magnetic energy storage (SMES) equipped near to the consumer. The varidity of the proposed control strategy is clarified by the simulation. The summary in this paper is as follows. (1) In the approximate reasoning, the rule for the current flowing into the SMES is added to the rules for the leveling of the active power and the energy stored in the SMES which are applied in the previous paper. Then, only PB is adopted to the membership function for this rule because of the function of the current limit. (2) The variance of the controlled results to the sustained component is indicated in the three-dimensional expression. Then, the range of the scalling factor is shown for the good controlled results of leveling the active power. (3) The controllable range in which the power control can be achieved in accordance with the power demand expands comparing with that in the previous paper. (4) The variance of the controlled results to the sustained component becomes smaller than that in the previous paper. It is clarified that the proposed control strategy can level the fluctuating load power better.