Deadbeat controlled PWM inverter with parameter estimation using only voltage sensor

A new control technique based on deadbeat control theory is proposed to obtain a nearly sinusoidal PWM inverter output voltage using only a voltage sensor. The closed loop sampled-data feedback scheme inherently results in very fast response to load disturbance and nonlinear load, producing low total harmonic distortion. Parameter estimation of the plant provides a type of self-tuning of the proposed controller. This paper presents a theoretical analysis, simulation and experimental results for a single phase PWM inverter controlled by an Intel 8086 microprocessor.