Abstract
To correspond to system voltage 800 V for electric vehicle which is higher than conventional 400 V, with high power density, we developed inverter with components which had high voltage insulation design and with stable parallel operation of power modules for high powering. Especially, double-sided direct water cooling power module as a key component of inverter was developed with techniques of the low inductance terminal structure and the conductor laminated insulation sheet which achieved insulation performance for 800 V system without increasing thermal resistance. The inverter including these technologies achieved maximum power density 94 kVA / L and corresponded to system voltage 800 V.
