Title :
Control of a 4 leg inverter for standalone photovoltaic systems
Author :
El-Barbari, Said ; Hofmann, W.
Abstract :
The control of a four leg inverter for standalone photovoltaic systems must provide symmetrical three phase voltages with constant frequency and amplitude. This paper presents a control strategy based on disturbance observer reduced order and disturbance feedforward in the state space. Simulation results for balanced and unbalanced load shows high dynamic and stationary precision of the amplitude and frequency of the output voltage. Experimental results verify the proposed control method.
Keywords :
digital control; feedforward; invertors; observers; photovoltaic power systems; voltage control; balanced load; constant amplitude; constant frequency; digital control; disturbance decoupling; disturbance feed forward; disturbance observer reduced order; four leg inverter control; output voltage; standalone photovoltaic systems; state space; symmetrical three phase voltages; unbalanced load; voltage control; Control design; Control systems; Frequency; Inverters; Leg; Microcontrollers; Photovoltaic systems; Power supplies; Stability; Voltage control;
Conference_Titel :
Power Electronics and Drive Systems, 2001. Proceedings., 2001 4th IEEE International Conference on
Print_ISBN :
0-7803-7233-6
DOI :
10.1109/PEDS.2001.975338
