provided to consumers the above objects other features and advantages of the present invention will become more apparent by describing the preferred embodiments thereof with reference to the accompanying drawings in which fig1 is a conceptual diagram showing a general series hybrid construction machine system fig2 is a block diagram showing a configuration of an apparatus for controlling a series hybrid construction machine system in accordance with an embodiment of the present invention fig3 is a timing chart showing the switching order of a motor driver that drives an electric motor used in an apparatus for controlling a series hybrid construction machine system in accordance with an embodiment of the present invention and fig4 is a flowchart showing the control operation of an apparatus for controlling a series hybrid construction machine system in accordance with an embodiment of the present invention now preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings the matters defined in the description such as the detailed construction and elements are nothing but specific details provided to assist those of ordinary skill in the art in a comprehensive understanding of the invention and the present invention is not limited to the embodiments disclosed hereinafter in order to definitely describe the present.