A power converter includes a semiconductor element disposed on a substrate, a thermistor element for detecting the temperature of the substrate, the thermistor element being disposed on the substrate, a current detection resistor having one end connected to a ground side node and another end that is grounded, a first voltage detection unit configured to detect a first potential at the other end of the current detection resistor and a second potential at the ground side node, and output a first detection signal, a control unit configured to control the semiconductor element based on the first detection signal, a temperature detection resistor having one end that is connected to a reference potential and another end that is connected to a detection node, and a temperature detection unit configured to detect a temperature based on a third potential at the detection node, and output a temperature information signal.

The present disclosure provides a power module assembly and a converter. The power module assembly includes a power module and a capacitor module, and the power module and the capacitor module are configured to be detachably connected; the power module includes a first bus bar, and the first bus bar includes a first connection portion and a power installation portion connected to the first connection portion; the capacitor module includes a second bus bar, and the second bus bar includes a second connection portion and a capacitor installation portion connected to the second connection portion, wherein the first connection portion and the second connection portion extend along a first direction, and the power installation portion and the capacitor installation portion extend along a second direction; the first connection portion and the second connection portion are connected by a fastener.

A semiconductor device includes a semiconductor chip made of a SiC substrate and having main electrodes on one surface and a rear surface, first and second heat sinks, respectively, disposed adjacent to the one surface and the rear surface, a terminal member interposed between the second heat sink and the semiconductor chip, and a plurality of bonding members disposed between the main electrodes, the first and second heat sinks, and the terminal member. The terminal member includes plural types of metal layers symmetrically layered in the plate thickness direction. The terminal member as a whole has a coefficient of linear expansion at least in a direction orthogonal to the plate thickness direction in a range larger than that of the semiconductor chip and smaller than that of the second heat sink.

An object of the present invention is to reduce wire inductance without damaging manufacturability of a power converter. A power converter according to the present invention includes a power semiconductor module, a capacitor, and DC bus bars and. The capacitor smooths a DC power. The DC bus bars and transmit the DC power. The DC bus bars and include a first terminal and a second terminal. The first terminal connects to the power semiconductor module. The second terminal connects to the capacitor. The DC bus bars and form a module opening portion to insert the power semiconductor module. The DC bus bars and form a closed circuit such that a DC current flowing between the first terminal and the second terminal flows to an outer periphery of the module opening portion.

There is obtained an electric-power conversion apparatus that prevents it that the temperature of a semiconductor switching device reaches a breakage temperature and hence the semiconductor switching device is broken and that realizes continuity of driving. The electric-power conversion apparatus includes a temperature sensor that detects a temperature of semiconductor switching device, and a temperature rising rate determination unit that compares a predetermined first threshold value with a temperature rising rate calculated based on a temperature detection value detected by the temperature sensor and determines that the temperature rising rate has exceeded the first threshold value; when the temperature rising rate determination unit determines that the temperature rising rate has exceeded the first threshold value, protective operation for suppressing an output of an electric-power conversion unit is performed.

One embodiment of the invention relates to a light tower. The light tower includes a base, an extendible mast coupled to the base, a light assembly coupled to the extendible mast and electrically coupled to the battery pack, and an inverter configured to receive and convert a direct current power from the battery pack into an alternating current power. The extendible mast is configured to move between a lowered position and a raised position.

A transformer for a multiphase power converter includes a magnetic structure, a first coil configured to electrically couple to an input circuit or an output circuit of a subconverter of the multiphase power converter, and a second coil configured to electrically couple to an input circuit or an output circuit of another subconverter of the multiphase power converter. The magnetic structure includes a top member, a bottom member, and legs extending between the top member and the bottom member in substantially the same direction. The legs include two outer members and two inner members. The first coil is wound about one of the two inner members of the magnetic structure, and the second coil is wound about the other one of the two inner members of the magnetic structure. Other example transformers, and multiphase power converters including transformers are also disclosed.

The power conversion device includes: a main circuit having first and second wiring layers formed respectively on both surfaces of a base board, mounted parts mounted on the first and second wiring layers, and first and second GND layers formed respectively, between external- and internal-layer portions of the base board and in regions corresponding to the mounted parts each being a mounted part which forms a circuit other than a circuit having an inductance component as a lumped constant, and to the first and second wiring layers; and a cooler attached to the base board by means of fixing screws through a first through-hole created in an end portion of the board; wherein the first and second GND layers are each formed so that creepage distance is created around a second through-hole in which a lead insertion part that mutually connects the first and second wiring layers is inserted.

A switched-mode power supply for use in an intralogistics system for goods has a housing with a first power output with a first operating voltage for first electrical consumers. The housing of the switched-mode power supply has at least a second power output with a second operating voltage for second electrical consumers. The second operating voltage at the second power output is greater than the first operating voltage at the first power output.

A vehicle-mounted inverter skid wherein the bottom plate of a box body (100) is equipped with a plurality of support beams (105), and the height of the support beams (105) is less than the height of a support frame (104), such that the box body (100) is a sunken structure relative to the support frame (104), and the height dimension of the box body (100) is reduced by it being sunken in the direction of the support frame (104); a wire feed-in assembly of a wire feed-in unit (200) comprises a wire feed-in terminal (202) and a wire feed-in bracket (203); the wire feed-in bracket (203) is shaped like the Chinese character for a door, its top plate is provided with an wire feed-in hole (2031), and the wire feed-in terminal (202) is vertically insertedly disposed in the wire feed-in hole (2031) for fixing; the bottom plate of the box body (100) has a wire feed-in port (204) corresponding to the location of the wire feed-in hole (2031), such that the wire feed-in terminal (202) is arranged vertically, reducing the horizontal footprint of the wire feed-in assembly; combined with a magnetic excitation assembly (205) of the wire feed-in unit (200) being separated and arranged in the vacant space on the side of a transformer unit (300), the length and width of the inverter sled are reduced, thus reducing the overall volume of the inverter skid, solving the technical problem of the large size of existing inverter sleds and making it more suitable for vehicle-mounted use.