A current detection device includes: a first conductor providing a part of a current path between a first inverter and a first rotary electric machine; a second conductor providing a part of a current path between a second inverter and a second rotary electric machine; a third conductor providing a part of a current path between a DC power supply and a converter; and first to third elements respectively arranged to face the first to third conductors. Each of the first to third elements is configured to detect a magnetic flux generated by an electric current flowing through a corresponding conductor in a coreless manner. A maximum value of the electric current in the second conductor is smaller than maximum values of the electric current in the first and third conductors. The second conductor is arranged between the first conductor and the third conductor in a predetermined direction.

A display apparatus includes a body; a display provided in the body; a processor provided in the body and configured to control the display to display an image; and a power supply including an adapter configured to be detachable from the body, and a power assembly configured to receive power from the adapter in a non-contact manner and supply the power to at least one of the display and the processor.

An electric connection box that has a function of relaying power of power supply supplied from an input-side power supply line and supplying the relayed power of power supply to an output-side load on a vehicle, that includes a first circuit unit, a second circuit unit, and an air blower configured to blow air to the first circuit unit, and in which the first circuit unit and the second circuit unit are arranged in a state of being close to each other, the electric connection box includes: a gap portion that is a space formed on a boundary between the first circuit unit and the second circuit unit; and an airflow guide portion configured to guide an airflow blown by the air blower to both the first circuit unit and the gap portion.

A power converter with over temperature protection compensation includes a main conversion unit, a primary-side control unit, a secondary-side control unit, a secondary detection circuit, and an over temperature adjustment circuit. The secondary-side control unit obtains a secondary voltage change value through the secondary detection circuit, and the secondary-side control unit correspondingly provides a current change value to the over temperature adjustment circuit according to the secondary voltage change value. The over temperature adjustment circuit provides a temperature control voltage according to the current change value so that the secondary-side control unit determines whether an over temperature protection is activated according to the temperature control voltage.

The resin material 336 is arranged in a first region 421 surrounded by the fin base 440, the inclined portion 343 of the cover member 340, and the outermost peripheral heat dissipation fins 334 arranged on the outermost peripheral side. Then, the resin material 336 is caused to protrude to the first region 421. That is, the resin material 336 is arranged in the first region 421. In a cross section perpendicular to the refrigerant flow direction (Y direction), a cross-sectional area of the first region 421 is larger than an average cross-sectional area 423 of the adjacent heat dissipation fins 331. Then, a cross-sectional area of a second region 422 formed between the resin material 336 arranged in the first region 421 and the outermost peripheral heat dissipation fin 334 arranged on the outermost peripheral side is smaller than the average cross-sectional area 423 of the heat dissipation fins.

An inverter, a photovoltaic power generation system, and a dehumidification method. The inverter includes a ventilation valve and a pneumatic transmission device. The ventilation valve is installed on a surface of a cabinet compartment of the inverter. A controller and the pneumatic transmission device are located in the cabinet compartment. A breathable film is disposed on the ventilation valve. The pneumatic transmission device blows air in the cabinet compartment toward the breathable film when the following at least one preset condition is met. The at least one preset condition includes at least one of or more of the following cases: the inverter is running, humidity in the cabinet compartment is higher than preset humidity, and a temperature in the cabinet compartment is higher than a preset temperature.

A half bridge DC-DC converter device includes a primary circuit and a secondary circuit, which include separate windings that are disposed around a magnetic core. The first circuit includes two switches and a drive circuit to turn the two switches on and off in an alternating fashion. The primary circuit further includes two thermal regulating components to regulate the current at the base of the two switches over a range of operating temperatures. The regulation of base current over a range of different operating temperatures results in the half bridge converter device being efficient and maintaining a stable switching frequency over the operational temperature range.

According to an aspect, a power supply system includes a plurality of power stages including a first power stage and a second power stage. The power supply system includes a voltage regulator connected to the first power stage and the second power stage. The voltage regulator is configured to detect an analog temperature signal from at least one of the first power stage and the second power stage via a communication line. The analog temperature signal is detected within a first voltage range. The voltage regulator is configured to transmit a digital bit stream to the first power stage and the second power stage via the communication line. The digital bit stream includes one or more programmable power stage parameters. The digital bit stream has digital levels within a second voltage range.

A power conversion device according to an embodiment includes a cell, a first sensor, a second sensor, a storage, a first controller, and a second controller. The first controller is configured to control or protect the cell on the basis of at least one of an output result of the first sensor and an output result of the second sensor. The second controller, in a case in which a change in at least one of the output result of the first sensor and the output result of the second sensor satisfies a first condition, is configured to execute at least one of a first operation of storing the output result of the first sensor in the storage, a second operation of storing the output result of the first sensor in the storage over a second period longer than a first period, and a third operation of storing the output result of the second sensor instead of the output result of the first sensor.

The invention relates to a method of controlling the on-time of a plurality of energy modules of an energy storage. The energy storage comprising a plurality of series connected energy modules forming an energy module string. A string controller is controlling which of the individual energy modules that is part of a current path through the energy module string, by control of the status of a plurality of switches. The string controller is controlling the frequency of the energy module string voltage according to an electric system reference related to a system to which the energy storage is connected. And wherein the string controller is controlling the switches of the individual energy modules so that each of the individual energy modules that are required to be included in the current path to establish the energy modules string voltage are included in the current path for at least a minimum on-time.