NOVELTY - The phase leg (150) has a heat sink device with a first surface and a second surface opposite to first surface. A first portion (152) is provided with a first semiconductor switching device which is coupled to first surface. A second portion (154) is provided with a second semiconductor switching device which is coupled to second surface. The heat sink device is fluid-cooled. A first non-neutral planar bus bar is coupled to first semiconductor switching device and a second non-neutral bus bar is coupled to second semiconductor switching device.    USE - Phase leg of two-layer DC link assembly for three-level power converter (claimed) for use with wind turbine farm. Can also be used in solar power generation system, fuel cell, geothermal generator, hydro-power generator, non-renewable energy source such as fossil and nuclear power plant and motor drive device.    ADVANTAGE - The three-level bridge configurations in power converters can be facilitated while using a two-layer bus structure. The inductance of commutating loops defined in a three-level bridge configuration is reduced, thus flux cancellation is facilitated in the commutation loops when current flows, thus reduction of energy stored within loop currents induced through routine switching actions can be facilitated. The switching speed of power converters for a given switching frequency is increased. The output voltage of power converters is increased. The power quality can be improved by reducing the harmonics for similar switching speeds of power converters. The heat removal capabilities can be increased by folding three-level bridge assembly to use two sides of heat sink for more effective heat removal, thus an increase in a power rating of the bridge circuit can be facilitated. Power ratings of power converters can be increased without equivalent increases in size and weight. The positive and negative terminals of a three-level bridge configuration are increased such that heat-generating power conversion devices can be positioned on opposite sides of a heat sink device. The low inductance interconnections of portions of a three-level phase leg positioned on opposite sides of a heat sink can be facilitated. The transmission of electric power from renewable and nonrenewable electric power generation assets can be facilitated. The increased amount of electric power can be generated and transmitted using power converters with a smaller physical footprint. The size of the power converters can be reduced. Thus the performance of the power converters can be improved and the size, cost can be reduced effectively.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a two-layer, DC link assembly for a three-level power converter.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic circuit diagram of the power converter.    Power converter (114)    Boost inductor (130)    Phase leg (150)    First portion (152)    Second portion (154)