A power conversion system is provided. The system includes a switch module, a resonant module, a magnetic conversion module, a bobbin and an iron core. The magnetic conversion module includes a primary winding and a PCB winding module. The PCB winding module includes a printed circuit board, a conductive layer disposed on at least one surface of the printed circuit board, and a switch unit disposed on the printed circuit board.

A power conversion system is provided. The system includes a switch module, a resonant module, a magnetic conversion module, a bobbin and an iron core. The magnetic conversion module includes a primary winding and a PCB winding module. The PCB winding module includes a printed circuit board, a conductive layer disposed on at least one surface of the printed circuit board, and a switch unit disposed on the printed circuit board.

A tag circuit which allows a load connectable thereto to have a wider power consumption range and which is usable in a wider input power range is provided. The tag circuit includes: a control part which is configured to respond to a command extracted from a radio wave received by an antenna by controlling a load; and a rectifying part which is configured to generate DC power to be supplied to the control part and DC power to be supplied to the load by converting a radio wave received by the antenna into DC power, the rectifying part being capable of changing power conversion characteristics of converting the radio wave received by the antenna into DC power to be supplied to the load.

A power stealing system having an electrical load, a capacitive element having an input connected to the electrical load. Some power from the electrical load may go through the capacitive element to an input of a rectifier. A voltage regulator may have an input connected to an output of the rectifier to set and control a voltage level of the electrical power from the rectifier, and provide an output of power stolen from the electrical load. An amount of power flowing through the capacitive element may be less than one percent of power flowing through the electrical load.

The transformer includes a core. The transformer includes a first rectifier voltage connection winding wound on the core operable to conduct with the first rectifier voltage connection. The transformer includes a second rectifier voltage connection winding wound on the core operable to conduct with the second rectifier voltage connection, the second rectifier voltage connection winding operable to form a first magnetic flux with the first rectifier voltage connection winding. The transfer includes a first rectifier return connection winding wound on the core operable to conduct with the first rectifier return connection. The transformer includes a second rectifier return connection winding wound on the core operable to conduct with the second rectifier return connection, the second rectifier return connection winding operable to form a second magnetic flux with the first rectifier return connection winding and operable to form a net flux with the first rectifier voltage connection winding.

The transformer includes a core. The transformer includes a first rectifier voltage connection winding wound on the core operable to conduct with the first rectifier voltage connection. The transformer includes a second rectifier voltage connection winding wound on the core operable to conduct with the second rectifier voltage connection, the second rectifier voltage connection winding operable to form a first magnetic flux with the first rectifier voltage connection winding. The transfer includes a first rectifier return connection winding wound on the core operable to conduct with the first rectifier return connection. The transformer includes a second rectifier return connection winding wound on the core operable to conduct with the second rectifier return connection, the second rectifier return connection winding operable to form a second magnetic flux with the first rectifier return connection winding and operable to form a net flux with the first rectifier voltage connection winding.

A controller (5) of an uninterruptible power supply apparatus includes: first to sixth comparator circuits (22a to 22f) respectively provided corresponding to first to sixth IGBTs (Q1 to Q6) and outputting, based on a comparison result of the magnitude of three-phase AC voltages, signals (A1 to A6) indicating that a corresponding IGBT is to be turned on; and a control unit (23) that, when a voltage between terminals (VD1 or VD2) of a first or second capacitor (C11 or C12) is higher than a target voltage (VDT), turns on and off each of the first to sixth IGBTs based on signals output from the first to sixth comparator circuits to decrease the voltage between terminals of the first or second capacitor.

A vehicle electrical power system includes a phase module assembly of a multi-phase inverter. The phase module assembly includes first and second flat laminated busbars extending in orthogonal planes. The phase module assembly also includes one or more transistors that convert direct current into one phase of a multi-phase alternating current of the multi-phase inverter, and to output the phase of the multi-phase alternating current to the load. The phase module assembly also includes one or more capacitors conductively coupled with the internal positive and negative terminal connectors and with the external positive and negative bushings configured to be conductively coupled with the power source of direct current. The assembly can be useful for vehicles because the components of the system are configured to carry large amounts of current in a more reliable and sustainable manner.

Resonant power converters that replace the conventional impedance matching stage with series or parallel connections between resonant inverters and resonant rectifiers are provided. Two or more resonant rectifiers can be connected in series or in parallel to the resonant inverter to provide impedance matching. Similarly, two or more resonant inverters can be connected in series or in parallel to the resonant rectifier to provide impedance matching. Electrical isolation of DC voltage between input and output is provided using only capacitors.

A power supply system includes a power supply assembly, an auxiliary power circuit and a control unit. The power supply assembly converts input power into a first DC power when the input power outputted from an input power source is normal. The auxiliary power circuit includes at least one energy storage unit for providing a second DC power and power converter electrically connected between the energy storage unit and the load for converting the second DC power into an individual auxiliary power. The control unit drives the auxiliary power circuit to provide an overall auxiliary power to the load when the input power is normal and a transient power required by the load is greater than a upper limit rated value of an output power outputted from the power supply assembly, so as to compensate a difference value between the transient power and the upper limit rated value.