Electric energy conversion device for hydrogen production power supply

The invention discloses an electric energy conversion device for a hydrogen production power supply, which comprises a box body, a diode module, an IGBT (Insulated Gate Bipolar Translator) module, a control module, a composite busbar and a filter capacitor, and is characterized in that the diode module, the IGBT module and the control module are arranged in a layered manner and are sequentially mounted in the box body from bottom to top; the composite busbar and the filter capacitor are installed in the box body and located on the side portions of the diode module, the IGBT module and the control module, an external alternating current power source is electrically connected with the input end of the diode module, the diode module comprises a three-phase bridge type rectifying circuit, and alternating current is converted into direct current. The output end of the diode module is electrically connected with the input end of the filter capacitor through the composite busbar, the output end of the filter capacit