An Inverter Controller Based on Equilibrium Point and Its Low-dimensional Inductor Current Estimation
2011
Based on the concept of equilibrium point,the tracking problem is transformed into the one that drives the error between system state and the equilibrium points towards zero.A novel inverter controller is proposed.Then the system's stability is discussed.However,high precision current sensors should be used in order to get capacitor cur-rent.For reducing the cost further,inductor current should be obtained and it can be estimated.To avoid cross-coupling and resulted huge computation burden,a novel inductor current partial estimator is given.The principle is simple and the calculation is small.Conclusions are all verified through simulation and experiment.
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