A power converter (100; 100a; 100b; 100c) for a vehicle comprising: a plurality of semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) for an inverter that each include a switching element and a freewheeling diode and form circuits for three phases as circuits that perform three-phase AC output for driving one permanent magnet synchronous motor, the switching element using silicon carbide (SiC) and performing switching operation, the freewheeling diode using silicon carbide (SiC) and passing a freewheeling current, each of the circuits being related to single-phase AC output and having arms each of which connects the freewheeling diode anti-parallel to the switching element, the arms being connected in series; a cooling unit (1, 27, 31) that cools the semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) for the inverter; two conductor plates (21, 22) that have positive electrode side and negative electrode side, are arranged on the semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) for the inverter in substantially parallel to the semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) for the inverter, and are connected to the semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) for the inverter via connecting bushes (61b, 62b, 61d, 62d); a gate driver circuit (20a, 20b, 20c, 20d) that controls a gate voltage of the switching element; and conductors (23; 51a, 51b, 51c) that perform AC output from the semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) for the inverter, wherein the semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) for the inverter are arranged on a cooling face to which the cooling unit (1, 27, 31) provides cooling, characterized in that the conductors (23; 51a, 51b, 51c) penetrate the two conductor plates (21, 22) and extend in a direction substantially perpendicular to a face on which the semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) for the inverter are arranged, the ends of the AC side output terminal conductors (23; 51a, 51b, 51c) are inserted into conductor receivers of a terminal unit mounted on a support plate, thereby performing the three-phase AC output from the semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) by an output connector via wiring. a plurality of semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) for an inverter that each include a switching element and a freewheeling diode and form circuits for three phases as circuits that perform three-phase AC output for driving one permanent magnet synchronous motor, the switching element using silicon carbide (SiC) and performing switching operation, the freewheeling diode using silicon carbide (SiC) and passing a freewheeling current, each of the circuits being related to single-phase AC output and having arms each of which connects the freewheeling diode anti-parallel to the switching element, the arms being connected in series; a cooling unit (1, 27, 31) that cools the semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) for the inverter; two conductor plates (21, 22) that have positive electrode side and negative electrode side, are arranged on the semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) for the inverter in substantially parallel to the semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) for the inverter, and are connected to the semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) for the inverter via connecting bushes (61b, 62b, 61d, 62d); a gate driver circuit (20a, 20b, 20c, 20d) that controls a gate voltage of the switching element; and conductors (23; 51a, 51b, 51c) that perform AC output from the semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) for the inverter, wherein the semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) for the inverter are arranged on a cooling face to which the cooling unit (1, 27, 31) provides cooling, characterized in that the conductors (23; 51a, 51b, 51c) penetrate the two conductor plates (21, 22) and extend in a direction substantially perpendicular to a face on which the semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) for the inverter are arranged, the ends of the AC side output terminal conductors (23; 51a, 51b, 51c) are inserted into conductor receivers of a terminal unit mounted on a support plate, thereby performing the three-phase AC output from the semiconductor element modules (13a, 13b, 13c, 13d; 13e, 13f; 18a, 18b, 18c) by an output connector via wiring.