Pulse Width Modulated Thyristor CSI for Grid Connected Photovoltaic Applications

Kulkarni, G. R.; Kalani, Nilesh B.
January 2013
Journal of Active & Passive Electronic Devices;2013, Vol. 8 Issue 1, p47
Academic Journal
A new three phase active commutated thyristor current source inverter (CSI) topology is proposed for grid connected photovoltaic systems. Space vector PWM with a special switching sequence, which ensures proper commutation of thyristors, is implemented. In order to suppress the natural frequency of oscillations of LC filter and to ensure stability of the system, a charge controller in synchronous rotating reference frame is described. This allows easy design of PI controller gains. The simulation results of a 7-kVA inverter are presented.


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