Abstract:
Prior power converters have utilized discrete components mounted on circuit boards of different design. Failure of one or more of the components requires the components to be separately tested to determine which is faulty. The faulty component or the board containing same must then be replaced. This results in significant down time for the inverter and can require stocking of a large number of specialized boards. In order to overcome these problems, an inverter (22) is assembled using a series of circuit boards (80, 82, 84) of standardized type. Each circuit board includes separate layers (101, 102-136, RS1+, 280, 290, 292) which interconnect components mounted thereon together with a heat exchanger (102) which cools high power components. When a malfunction of a component occurs, the entire board may be replaced so that inverter down time is minimized. Also, the use of standardized boards reduces stocking requirements and inventory costs.
Abstract:
A magnetic assembly includes a winding (102) and a housing (106) disposed about the winding. The housing includes an interior surface (108) contoured to conform to the winding to facilitate heat transfer between the winding and the housing. A method of manufacturing a magnetic assembly includes forming (154) a contoured interior surface on a housing and assembling (156) a winding into the housing such that the interior surface of the housing conforms to the winding to facilitate heat transfer between the winding and the housing.
Abstract:
According to an aspect, an inductor damper circuit includes a shared magnetic core, a primary winding (410), and a secondary winding (412). The primary winding includes an inductor winding of a first wire gauge wound about the shared magnetic core. The secondary winding includes a resistive damper winding of a second wire gauge that is less than the first wire gauge and wound about the shared magnetic core in contactless magnetic coupling with the primary winding.
Abstract:
An inductor damper circuit includes a toroidal inductor (904) having an inductor coil and an inductor housing (902), and a resistive element (800) configured around a periphery of the inductor coil and having one end connected to the toroidal inductor, where the resistive element is printed on a flexible substrate (802) and configured between the inductor coil and the inductor housing, and the resistive element (800) is integrated with the toroidal inductor (904).
Abstract:
A cold plate assembly is provided having a base defining a cooling channel and a heat exchanger friction-stir welded to the base, wherein the heat exchanger is located within a portion of the cooling channel, and the friction-stir welding between the heat exchanger and the base forms a fluid seal.
Abstract:
A power filter arrangement includes a toroidal package having a toroid (82) and a resistive element (84). The resistive element is disposed about an outer circumference of the toroid and is joined to the toroid. The resistive element is wound about the toroid. The resistive element is provided with a first resistive pattern having an even number of total turns.
Abstract:
Potted electronic assemblies are disclosed along with methods of making and cooling them. The electronic assemblies include a conductive heat transfer medium disposed between and in contact with an electronic component (20) and a heat sink. The conductive heat transfer medium has a hardened fluid polymer material that includes boron nitride nanotubes dispersed therein.
Abstract:
A nanocomposite structure (14) includes a nanocomposite (100). The nanocomposite (100) includes a bulk matrix phase (102) and a nanophase filler (104) disposed within the bulk matrix phase. The nanophase has a plurality of nanotubes (106) including a material with thermal conductivity that is greater than the thermal conductivity of the bulk matrix phase (102) of the nanocomposite. An electrical device (10) includes a conductor (16) in thermal communication with the nanocomposite structure (14) formed from the nanocomposite (100).