Power converter simulation module connected to the EMTP

A novel approach for power converter simulation in the electromagnetic transients program (EMTP) is presented. It is based on simultaneous interfacing of a converter simulation module with the EMTP network equations. Hybrid analysis, demonstrated to be more general than the compensation method, is used to model the nonlinear converter module network. The procedure used to formulate hybrid port equations is general and can be used for any converter module network with nonlinear branch functions. The valve model selection has no theoretical restrictions, and the particular case of valve modeling by ideal switches is simple to accommodate. The new approach is more general and efficient than the standard EMTP method for power converter simulation. Modularity permits incorporation of dedicated initialization procedures and programming of digital control schemes