An energy supporting device for a power transmission system is disclosed, the energy supporting device comprising: a first energy supporting arrangement including at least a first string of two or more cells connected in series; a second energy supporting arrangement including at least a second string of two or more cells connected in series, wherein said first string and said second string are at least electrically connectable in series, wherein each cell of the second string comprises a power electronics building block, wherein the energy supporting device is configured to regulate voltage in the energy supporting device at least temporarily by means of one or more cells of the second string when said energy supporting device is operated in one of said at least one charging mode. A power transmission system, a method of providing energy support for a power transmission system, and a control device are also provided.

A cooking appliance utilizes a rechargeable battery to selectively power one or more electric cooking elements of the cooking appliance instead of using an external power source such as a residential power circuit whenever the combined power demand of the active electric cooking elements exceeds the available power from the external power source, e.g., by causing an electric cooking element to be powered by the rechargeable battery instead of the external power source based at least in part on an activation state of another electric cooking element.

A method to connect a direct current power (DC) source to a universal alternating current (AC) load can include an energy storage device configured to output a fixed voltage in a range of 84-135 volts (for 120 volt based systems) or 180-264 volts (for a 230 volt based systems). The universal AC load has input comprising a diode bridge followed by a storage capacitor. The unregulated DC source can be connected to the universal AC load by a switch that is turned on (closed) and off (open) with a low-frequency signal (e.g., 90 and 135 Hz) and a duty cycle between 80% and 98%. A sensor and inductor can be added to protect from excessive currents.

Methods of operating a grid ancillary service with an uninterruptible power supply (GAUPS) device are provided. A method of operating a GAUPS device includes controlling a switch of the GAUPS device in response to a signal that is generated by the switch, to control efficiency of an inverter and quality of power supplied to a load via the inverter. The switch is coupled between the inverter and the load. Related systems and devices are also provided.

An inductor and a related apparatus are provided. The inductor includes an upper magnet yoke and a lower magnet yoke that are straight-shaped and are disposed in parallel. A first winding disposed on a first fiber post, and a second winding disposed on a second fiber post. The upper magnet yoke, a first upper fiber post, and a second upper fiber post are integrally molded. The lower magnet yoke, a first lower fiber post, and a second lower fiber post are integrally molded. A clockwise/counterclockwise direction of a current in the first winding is consistent with a clockwise/counterclockwise direction of a current in the second winding.

The inventive concepts provide a bidirectional switching converter including a first power metal oxide semiconductor field effect transistor (MOSFET) connecting an input voltage node to a switching node, a second power MOSFET connecting the switching node to a ground node, and a zero current detection (ZCD) auto-calibration circuit configured to perform one of an operation of generating a first offset for varying a turn-on time of the first power MOSFET according to an operation mode and an operation of generating a second offset for varying a turn-on time of the second power MOSFET according to the operation mode.

This application provides a conversion circuit, a switch-mode power supply, and an electronic device. The conversion circuit mainly includes a first branch circuit and a second branch circuit. Input sides of the first branch circuit and the second branch circuit are connected in series, and output sides of the first branch circuit and the second branch circuit are connected in parallel; or input sides of the first branch circuit and the second branch circuit are connected in parallel, and output sides of the first branch circuit and the second branch circuit are connected in series. This implementation helps improve efficiency of the conversion circuit. When an inductor is disposed in the conversion circuit, a size of the inductor is further reduced, to improve integration.

A power module includes: a first substrate having an outer surface and an inner surface; a semiconductor die coupled to the inner surface of the first substrate; a second substrate having an outer surface and an inner surface, the semiconductor die being coupled to the inner surface of the second substrate; and a flex circuit coupled to the semiconductor die.

Performance of a semiconductor device is enhanced. A loss of a circuit device using a semiconductor device as a switch is reduced. A semiconductor device includes: a first semiconductor chip having a first MOSFET of p-type and a first parasitic diode; and a second semiconductor chip having a second MOSFET of n-type and a second parasitic diode. On front surfaces of the first and second semiconductor chips, a first source electrode and a first gate wiring and a second source electrode and a second gate wiring are formed, respectively. On back surfaces of the first and second semiconductor chips, first and second drain electrodes are formed, respectively. The second back surface and the first front surface face each other such that the second drain electrode and the first source electrode come into contact with each other via a conductive paste.

A closed loop control system actively regulates the battery current paths of physically separated circuits so that the current is approximately the same for each of the circuits regardless of the various system loads. The closed loop control system modulates the current paths by either modulating a high side transistor used to independently limit each battery's current path or by modulating a DC/DC converter's output voltage to independently boost each battery's current path. The closed loop control system is also designed to handle undervoltage lockout (UVLO) situations when one of the batteries is nearing empty to tilt the power balance in the chance that there is an existing battery charge mismatch to support system load bursts and to turn off the circuit when the system current draw is exceptionally low. A tilting circuit also identifies and discharges the battery with the higher charge until the charge states are substantially equal.