Terminal Sliding Mode Controlled CVCF inverters

A control technique called Terminal Sliding Mode Control (TSMC) to generate high-quality sinusoidal output voltage for a constant-voltage constant-frequency (CVCF) inverter is presented in this paper. Conventional Sliding Mode Control (SMC) has used extensively due to its robustness and simplicity, but the convergence of the system states to the equilibrium point is usually asymptotic. TSMC not only has the robustness of the SMC but also guarantees the finite reaching time to the equilibrium point. The presented TSMC adjustable parameters are used to decrease the system state error to zero in finite time. With the better robustness of the proposed controller, the output voltage of the CVCF inverter will have the features of low distortion, and insensitively to parameter variations and external disturbances. Simulation results are given to conform that the proposed controller can achieve satisfactory response under linear and nonlinear loads.