The application discloses a power supply device, including: a circuit board having a first side and a second side opposite to each other, the circuit board at least mounted with a first heating element disposed close to the second side; a fan disposed on the first side of the circuit board for providing an air-cooled airflow for heat dissipation, wherein an airflow direction is defined from the first side to the second side; a first airflow guide member disposed in parallel to the first heating element; and a second airflow guide member at least partially disposed above the first heating element, and adjacent to the first airflow guide member, wherein the first airflow guide member, the second airflow guide member and the first heating element form a first auxiliary air channel; wherein a direction of the first auxiliary air channel is the same as the airflow direction.

The present disclosure relates to the field of power electronics, and proposes a power conversion system, including a power cabinet, a first divider and a plurality of power modules. The power cabinet includes a first high voltage compartment and a first low voltage compartment. The first divider is arranged in the power cabinet, and extends along a height direction of the power cabinet to separate the first high voltage compartment and the first low voltage compartment. The plurality of power modules are arranged in the power cabinet, each power module includes a high voltage input terminal and a low voltage output terminal; the high voltage input terminal is arranged in the first high voltage compartment, and the low voltage output terminal is arranged in the first low voltage compartment.

A power electronics module for an industrial or vehicle battery charger system or the like is provided. The power electronics module utilizes a chassis housing including a heatsink surface and a plurality of sidewalls. A main power section printed circuit board is disposed adjacent to the heatsink surface of the chassis housing a. A low voltage, low power printed circuit board is disposed adjacent to the main power section printed circuit board opposite the heatsink surface of the chassis housing. An alternating current input filter portion printed circuit board including electromagnetics is disposed along one of the plurality of sidewalls of the chassis housing and separated from the low voltage, low power printed circuit board within the chassis housing.

In one embodiment, the system includes one or more electrical components associated with turbomachinery, and the one or more electrical components are disposed within two or more interior compartments of an electrical enclosure. The system also includes a cooling system coupled to the electrical enclosure. The cooling system includes one or more air ducts configured to direct a cooling air to each interior compartment of the two or more interior compartments. The cooling system also includes a controller configured to route cooling air to each interior compartment via the one or more air ducts. The controller is configured to independently regulate a thermal environment for each interior compartment of the two or more interior compartments.

In accordance with presently disclosed embodiments, a system and method for controlling the temperature of medium-voltage power electronics assemblies (i.e., medium-voltage drives) is provided. The disclosed system generally includes a medium-voltage drive having one or more cabinets with power electronics devices disposed therein, one or more fans for circulating air through the cabinet to cool the devices, and one or more space heaters disposed in the cabinet. The drive also features temperature sensors used to measure various temperatures of the drive, a controller communicatively coupled to the sensors, and one or more variable frequency drives (VFD) for the fans. The controller may receive measurements regarding the ambient and power device temperatures and apply controls to vary the space heater power and fan speed in response to environmental changes.

A power converter for a railway vehicle includes a power converter body configured to be installed on the railway vehicle; a first radiating fin unit arranged on a front side on the power converter body for dissipating heat from the power converter body; a second radiating fin unit arranged on the power converter body on a rear side for dissipating heat from the power converter body; and an air duct that takes in air from a region other than regions in which the first and second radiating fin units are disposed while the railway vehicle is moving, the air duct extending into a fin separation space that is defined as a space between the first radiating fin unit and the second radiating fin unit so as to guide air that is taken in into the fin separation space.

An electronic equipment cooling device is provided, which has housing in which heat-generating components are housed, and which can cool surfaces of the housing. A blower fan blows air toward the surfaces via a chamber room. An inclined flat plate-like partition portion is provided inside the chamber room so as to distribute a desired amount of air corresponding to a heat generating ratio of the respective surfaces.

To reduce standby time during charging, a charging device includes a housing on which a battery pack is detachably mountable, a control board, and a cooling fan. The battery pack is formed with a vent hole. The housing is formed with a ventilation opening configured to face the vent hole. The cooling fan is configured to flow an air passing through the control board and the ventilation opening, and is configured to work even in a state where the battery pack is detached.

A filter with three phases comprising for each phase an input terminal, an output terminal and a capacitor, wherein for each of the three phases the input terminal is electrically connected via a connection point to the output terminal, wherein the connection points of the three phases are electrically connected via the three capacitors in star and/or delta form, wherein the filter comprises a housing containing two coil blocks, wherein the housing comprises a first side and a second side opposite the first side, wherein the two coil blocks are arranged along a line between the first side and the second side, wherein a fan for cooling the two coil blocks is arranged on the first side of the housing, wherein the larger of the two coil blocks is arranged between the fan and the smaller of the two coil blocks.

In accordance with presently disclosed embodiments, an uninterruptable power supply (UPS) is provided. The UPS utilizes two chambers, one which is pneumatically sealed to house control electronics, and one that is not sealed that houses transformers. The pneumatically sealed compartment is cooled through a heat exchanger or air conditioner as well as through a heat sink. The chamber which houses the transformers is cooled by a fan which circulates air from outside the chamber through the chamber and out vents in a wall of the chamber. The UPS may utilizes a series of ducts to direct air flow into the chamber housing the transformers in such a way that the air enters the bottom of the chamber past the control electronics and through vents near the front of the chamber. The UPS may utilize a series of ducts to direct air flow past the heat sink attached to the pneumatically sealed chamber.