An energy power converter system , the system comprising; a plurality of parallel converters (110-1 ... 110-N); a main transformer said main transformer being electrically coupled to the plurality of parallel converters (110-1 ... 110-N), the main transformer having at least one separate magnetic path for magnetic fields generated in the main transformer by a summation of currents coming from the plurality of parallel converters (110-1 ... 110- N), wherein the main transformer is a multi-leg transformer comprising one or more legs having no winding to provide the at least one separate magnetic path for the magnetic fields generated by the plurality of parallel converters; one or more sensors and one or more circuit breakers installed throughout the energy power converter system ; and a converter control device configured to receive fault data from the one or more sensors and electrically coupled to the plurality of parallel converters (110-1 ... 110-N) and the main transformer and configured to discontinue electrical flow in the system based at least in part on detection of an electrical fault condition, the converter control device configured to, based on the fault data, selectively instruct one or more circuit breakers to discontinue the electrical flow in the system; said system further comprising one or more of the following: a wind turbine generator electrically coupled to the plurality of parallel converters (110-1 ... 110-N), the main transformer , and the converter control device ; and an electrical power grid electrically coupled to the plurality of parallel converters through the main transformer. a plurality of parallel converters (110-1 ... 110-N); a main transformer said main transformer being electrically coupled to the plurality of parallel converters (110-1 ... 110-N), the main transformer having at least one separate magnetic path for magnetic fields generated in the main transformer by a summation of currents coming from the plurality of parallel converters (110-1 ... 110- N), wherein the main transformer is a multi-leg transformer comprising one or more legs having no winding to provide the at least one separate magnetic path for the magnetic fields generated by the plurality of parallel converters; one or more sensors and one or more circuit breakers installed throughout the energy power converter system ; and a converter control device configured to receive fault data from the one or more sensors and electrically coupled to the plurality of parallel converters (110-1 ... 110-N) and the main transformer and configured to discontinue electrical flow in the system based at least in part on detection of an electrical fault condition, the converter control device configured to, based on the fault data, selectively instruct one or more circuit breakers to discontinue the electrical flow in the system; said system further comprising one or more of the following: a wind turbine generator electrically coupled to the plurality of parallel converters (110-1 ... 110-N), the main transformer , and the converter control device ; and an electrical power grid electrically coupled to the plurality of parallel converters through the main transformer. a wind turbine generator electrically coupled to the plurality of parallel converters (110-1 ... 110-N), the main transformer , and the converter control device ; and an electrical power grid electrically coupled to the plurality of parallel converters through the main transformer. <EOS>