论文信息 - Tracking signal in a centered pulse ZAD power inverter

Tracking signal in a centered pulse ZAD power inverter

This paper is devoted to the application of the centered pulse zero average dynamics (ZAD) to tracking signals. Based on the use of a switching surface, which performs sliding mode with desired tracking in steady state, a centered pulse ZAD algorithm is designed to yield fixed-frequency pulse width modulation (PWM). A power inverter has been simulated by means of PSIM software, which allows including realistic (i.e. resistive losses, dead time of switches, quantification and sampling and so on) effects in the simulation process. Additionally, the control algorithm has been programmed in C code, which could be used, with slight modifications, to programme a digital controller (microprocessor, DSP, etc.). The simulation results from generating triangular and sinusoidal waveforms show the fulfilment of the specifications. Namely, zero error tracking and robustness with respect to different loads: resistive load, nonlinear load, time-variable load and open circuit operation

D. Biel | R. Cardoner | E. Fossas

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