An electronic power conversion component includes an electrically conductive package base comprising a source terminal, a drain terminal, at least one I/O terminal and a die-attach pad wherein the source terminal is electrically isolated from the die-attach pad. A GaN-based semiconductor die is secured to the die attach pad and includes a power transistor having a source and a drain, wherein the source is electrically coupled to the source terminal and the drain is electrically coupled to the drain terminal. A plurality of wirebonds electrically couple the source to the source terminal and the drain to the drain terminal. An encapsulant is formed over the GaN-based semiconductor die, the plurality of wirebonds and at least a top surface of the package base.

An electronic power conversion component includes an electrically conductive package base comprising a source terminal, a drain terminal, at least one I/O terminal and a die-attach pad wherein the source terminal is electrically isolated from the die-attach pad. A GaN-based semiconductor die is secured to the die attach pad and includes a power transistor having a source and a drain, wherein the source is electrically coupled to the source terminal and the drain is electrically coupled to the drain terminal. A plurality of wirebonds electrically couple the source to the source terminal and the drain to the drain terminal. An encapsulant is formed over the GaN-based semiconductor die, the plurality of wirebonds and at least a top surface of the package base.

A mode of a rectifier may be changed between at least fully passive and fully synchronous based upon direct current (DC) output by the rectifier and/or direct current voltage output by the rectifier. This extends the range of direct current output by the rectifier for a given range of DC voltage output by the rectifier.

A wireless charging reception circuit, a method, electronic device and a wireless charging system are described. In the wireless charging reception circuit, a control circuit may control a rectifying circuit to rectify electric signals transmitted by a first resonance circuit and/or a second resonance circuit. Since the rectifying circuit outputs different voltages after rectifying the electric signals transmitted by the different resonance circuits, the control circuit may controls the rectifying circuit to rectify the electric signals transmitted by the different resonance circuits to adjust the output voltages of the rectifying circuit.

An embodiment charging device includes a power factor correction circuit first to third switch legs connected to first to third inductors, respectively, a relay network for controlling connection between the first to third inductors and first to third input terminals according to a phase of a power grid connected to the first to third input terminals, a relay control circuit connected to the first to third input terminals for sensing one of the first to third input terminals to which a power source is connected and controlling the relay network based on a sensing result, and a relay filter circuit including first to third filter capacitors connected between a ground plane and first to third sensing lines connected to the relay control circuit for sensing voltages of the first to third input terminals and a fourth filter capacitor connected between the ground plane and a chassis.

A dual-input power conversion system includes a first primary side power network comprising a first hold-up capacitor, wherein the first primary side power network has inputs configured to be coupled to a first power source, and outputs coupled to a transformer, a second primary side power network comprising a second hold-up capacitor, wherein the second primary side power network has inputs configured to be coupled to a second power source, and outputs coupled to the transformer, and a secondary side power network having inputs coupled to a secondary side of the transformer, and outputs coupled to a load, wherein the first primary side power network and the second primary side power network are configured such that a voltage across one of the first hold-up capacitor and the second hold-up capacitor is maintained by a voltage reflected from the secondary side to a corresponding primary side.

A dual-input power conversion system includes a first primary side power network comprising a first hold-up capacitor, wherein the first primary side power network has inputs configured to be coupled to a first power source, and outputs coupled to a transformer, a second primary side power network comprising a second hold-up capacitor, wherein the second primary side power network has inputs configured to be coupled to a second power source, and outputs coupled to the transformer, and a secondary side power network having inputs coupled to a secondary side of the transformer, and outputs coupled to a load, wherein the first primary side power network and the second primary side power network are configured such that a voltage across one of the first hold-up capacitor and the second hold-up capacitor is maintained by a voltage reflected from the secondary side to a corresponding primary side.

A grid-forming wind turbine control method for a diode rectifier unit-based offshore wind power transmission system. A control system for controlling a grid-side converter has a three-layered structure, where a first layer is a combination of an active power controller and a reactive power controller; a second layer is a voltage controller; and a third layer is a current controller. The actual reactive power is represented by a per-unit value of a capacity of a corresponding wind turbine unit. The wind turbine units have the same reactive-power reference value, which is constant and does not change with time. The reactive power controllers of all wind turbine units have the same structure and parameters.

A power converter includes: a converter including four switching elements in full bridge configuration, the converter converting alternating-current power supplied from an alternating-current power supply into direct-current power; a reactor provided between the alternating-current power supply and the converter; a smoothing capacitor connected between direct-current terminals of the converter; an alternating-current voltage detector detecting an alternating-current voltage output from the alternating-current power supply; an alternating current detector detecting a current flowing through the reactor; and a control circuitry controlling a switching operation of the switching elements. The control circuitry controls the switching elements such that a potential fluctuation due to the switching operation is reduced between a P terminal of the converter and an L terminal of the alternating-current power supply, or between a G terminal of the converter and an N terminal of the alternating-current power supply.

A power converter includes: a converter including four switching elements in full bridge configuration, the converter converting alternating-current power supplied from an alternating-current power supply into direct-current power; a reactor provided between the alternating-current power supply and the converter; a smoothing capacitor connected between direct-current terminals of the converter; an alternating-current voltage detector detecting an alternating-current voltage output from the alternating-current power supply; an alternating current detector detecting a current flowing through the reactor; and a control circuitry controlling a switching operation of the switching elements. The control circuitry controls the switching elements such that a potential fluctuation due to the switching operation is reduced between a P terminal of the converter and an L terminal of the alternating-current power supply, or between a G terminal of the converter and an N terminal of the alternating-current power supply.