A HIGH VOLTAGE DC POWER SOURCE AND A POWER APPARATUS FOR A HIGH VOLTAGE ELECTRICAL POWER SYSTEM

摘要

A high voltage dc power source is provided for providing a charging current to an electronic device comprising one or more strings connected in parallel each string being subdivided into a plurality of dc power source units connected in series and each string being provided with at least one solid state switch configured to connect and disconnect said string and a control unit adapted to turn on and turn off the at least one solid state switch and the control unit is configured upon receiving an order to connect the string to control the at least one switch of the string to be alternately turned on and off so that a soft charging of the electronic device is achieved.