Browse Publications Technical Papers 2019-01-1379
2019-03-19

A Predictive Reference Governor for Synchronous Generator Regulation with a Pulsed Constant Power Load 2019-01-1379

In this paper, first an analytical model of a synchronous generator with a pulsed constant power load (CPL) is developed and numerically compared with a detailed simulation model. The analytical model is shown to possess good predictive abilities, thus enabling its use for control purposes. Second, the generator has a PI control inner-loop, whose task is to regulate the generator's output voltage to a desired reference. A novel outer-loop predictive reference governor (PRG) is designed and tested via simulation. The PRG uses the analytical model to predict the output behavior of the generator over a short time window, and continuously modifies the reference given to the inner-loop in order to maintain stringent steady-state requirements, in spite of demanding power requirements at the CPL. Simulation results illustrate the significant performance advantages of using the PRG versus using the inner-loop PI controller alone. The paper also discusses challenges of implementing standard model predictive control (MPC) on this problem, thus further strengthening the case for the potential usefulness of the PRG.

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