An electric circuit for a power converter having a substrate having a first face on which electronic components are mounted and a second face intended to cooperate with a cooling system, the substrate having a stack of conductive layers made of electrically and thermally conductive material and at least one insulating layer made of electrically insulating material, two successive conductive layers being separated by an insulating layer, and the conductive and insulating layers extending in parallel planes and being mechanically associated together. Each conductive layer has two opposite faces parallel to the plane in which the first face of the substrate extends and includes, on at least one of its two faces, at least one boss extending in a direction perpendicular to the plane, the at least one boss passing through at least one other conductive layer and opening out onto the first or the second face of the substrate.

A power conversion device which is premised on converting electric power supplied from a power source with use of a magnetic component, includes: a plurality of bus bars configured to supply electric power to a load; current sensor elements which are respectively provided for the plurality of bus bars, and are configured to detect magnetic fluxes generated when electric currents flow through the plurality of bus bars; and a plate-like magnetic shield plate which is arranged on a straight line connecting the magnetic component and the current sensor element, and is configured to shield magnetic fluxes directed from the magnetic component to one or more current sensor elements.

An electronic module includes a power supply wiring line disposed on a substrate along a first side and connected to a power supply terminal, a ground wiring line disposed on the substrate along a second side and connected to a ground terminal, and first to third half bridges each having a high-side switch and a low-side switch connected in series between the power supply wiring line and the ground wiring line. Connection points of the high-side switches and the low-side switches are connected to first to third motor terminals and also connected in parallel to one another. The first motor terminal, the second motor terminal, and the third motor terminal are disposed between the power supply terminal and the ground terminal.

A power converter (100) includes a power converter circuit (1), a cooler (2), and a cover member (3). The power converter circuit is configured to convert input electric power into DC power or AC power. The power converter circuit is placed on the cooler. The cooler is configured to cool the power converter. The power converter circuit is housed between the cooler and the cover member. The cooler (2) includes a main body (20), a coolant flow passage (21), and a coolant input/output portion (22). The coolant flow passage is formed inside the main body. A coolant is circulatable through the coolant flow passage. The coolant input/output portion is coupled to the coolant flow passage. The coolant input/output portion includes a coolant introduction pipe (22a) and a coolant discharge pipe (22b). The coolant introduction pipe introduces the coolant from outside the cooler. The coolant discharge pipe discharges the coolant to outside the cooler. The coolant input/output portion (22) is joined to the main body. The joined part (23) has a joining strength lower than a strength of the main body.

An isolated power converter and a hydrogen production system are provided. An electrical connection structure in the isolated power converter includes N secondary winding output bus bars, N rectifier circuit input bus bars, and a positive-negative bus bar, where N is greater than or equal to 1. A secondary winding may include M tapping points, and the secondary winding output bus bar and the rectifier circuit input bus bar that correspond to the secondary winding each include M copper bars that are insulated and stacked. The M tapping points of the secondary winding overlap the M copper bars of the secondary winding output bus bar at input ends of the M copper bars, respectively. The positive-negative bus bar includes two copper bars that are insulated and stacked.

A power system has a power-electronic module that includes a housing defining a looped reservoir, a ferro-magnetic medium sealed within and filling the looped reservoir, and a conductor surrounded by the ferro-magnetic medium. The conductor is coiled within and along the looped reservoir, and has terminals extending out of the reservoir such that the ferro-magnetic medium and conductor form an inductor that opposes changes in magnitude of current flowing through the conductor.

A power conversion apparatus includes a plurality of power conversion units each including a power conversion module, the plurality of power conversion units being arranged at an interval in a lateral direction orthogonal to a vertical direction, and at least one support body that extends from one side toward the other side of the plurality of power conversion units in the lateral direction, on which the plurality of power conversion units are placed from above. The support body is formed from an insulating member.

The present invention discloses an anti-electric shock mechanism for a power converter comprising a protective tube provided in the power converter and further comprising a locking guide block provided in the power converter, and a protective holder for mounting the protective tube, wherein a locking groove is formed on the protective holder, and a locking part inserted into the locking groove is provided on the locking guide block. The anti-electric shock mechanism for the power converter provided by the present invention can prevent the risk of electric leakage and electric shock when the power converter is used, whether the protective tube has not been pulled out, is partially pulled out or has been completely pulled out, so as to improve the safety of the power converter.

Motor vehicle comprising an electric motor for driving the motor vehicle and a power converter device for supplying an alternating current to the electric motor, the power converter device having a cooling device, and the cooling device comprising at least one coolant connection, which is fluidically connected to a coolant port of the electric motor to form a common cooling circuit.

A power conversion apparatus has a positive electrode bus bar and a negative electrode bus bar. The power conversion apparatus has a first semiconductor module incorporating an upper-arm switching element and including a positive electrode terminal and a second semiconductor module incorporating a lower-arm switching element and including a negative electrode terminal. The first semiconductor module and the second semiconductor module are placed such that the positive electrode terminal and the negative electrode terminal face each other in a direction orthogonal to a protruding direction. The positive electrode bus bar and the negative electrode bus bar respectively have coexisting parts placed together between the positive electrode terminal and the negative electrode terminal as seen in the protruding direction of power terminals. The coexisting parts are at least partially placed in a space between the positive electrode terminal and the negative electrode terminal.