The present invention allows individual control of an output voltage of a main transformer and an output voltage of a teaser transformer while utilizing output characteristics of the respective transformer when a Scott connected transformer has control equipment arranged on the input side thereof, including first control equipment arranged in one of two phases of the main transformer on the input side in order to control a voltage or a current and second control equipment arranged in one end of a primary coil of the teaser transformer on the input side in order to control a voltage or a current, the control equipment controlling an output voltage of the main transformer and an output voltage of the teaser transformer individually.

This invention relates to the technical field of harmonic elimination for ferromagnetic resonance for a voltage transformer (abbreviated as PT), in particular, to a harmonic elimination method for ferromagnetic resonance for an active resistance-matching voltage transformer based on PID-adjustment, including compiling a resistance matching algorithm; designing and building a harmonic elimination control system based on the PID control strategy; presetting an active resistance-matching strategy; designing an engineering scheme for placing resistors. The present invention can solve the contradiction between the standards of the harmonic elimination resistance and the winding overload in the open triangle of the voltage transformer when the single-phase ground fault occurs and the fault is eliminated; avoiding the technical difficulties that the characteristics of single-phase ground fault and power frequency resonance are difficult to distinguish and the ferromagnetic resonance caused by single-phase ground fault; ensuring that the voltage transformer PT is not overloaded and burned.

A high voltage transformer apparatus, including: a tank; a high voltage transformer, disposed upright on one side within the tank, including a first transformer unit configured to generate a positive voltage and a second transformer unit configured to generate a negative voltage; a positive high voltage terminal and a negative high voltage terminal respectively disposed on the other side within the tank opposite to the first transformer unit and the second transformer unit; a first circuit board disposed between the first transformer unit, the first side wall, and the positive high voltage terminal; and a second circuit board disposed between the second transformer unit, the second side wall, and the negative high voltage terminal; wherein the first and second circuit boards are respectively configured to rectify, filter and sample the positive and negative voltages.

A high-voltage optical transformer may include (1) an array of light-emitting devices that are connected in parallel with one another and are electrically coupled to an electrical input, (2) a transfer medium, and (3) an array of photovoltaic cells that (A) are optically coupled to the array of light-emitting devices via the transfer medium, (B) are connected in series with one another, and (C) produce an electrical output whose voltage is higher than the electrical input. Various other apparatuses, systems, and methods are also disclosed.

The present disclosure discloses a charging system and method, and a power adapter. The system includes a power adapter and a terminal. The power adapter includes a first rectifier, a switch unit, a transformer, a synthesizing unit, a sampling unit, and a control unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to a current sampling value and/or a voltage sampling value, such that a second alternating current outputted by the synthesizing unit meets a charging requirement. The terminal includes a battery.

The present disclosure discloses a charging system and a charging method and a power adapter. The system includes a battery, a first rectifier, a switch unit, a transformer, a second rectifier, a sampling unit and a control unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to a current sampling value and/or a voltage sampling value sampled by the sampling unit, such that a third voltage with a third ripple waveform outputted by the second rectifier meets a charging requirement. The third voltage is configured to be introduced into the battery.

An inductor device includes a first inductor, a second inductor, and at least one switch circuit. The second inductor is arranged to enclose the first inductor, and use a topmost layer metal to resist external interference for the first inductor. The at least one switch circuit is coupled to the second inductor, and is arranged to receive at least one control voltage, wherein the at least one control voltage is arranged to adjust conduction degree of the at least one switch circuit.

A magnetic-component module includes a substrate, a core on a first surface of the substrate, a spacer on the core, a winding including wire bonds extending over the core and electrically connecting a first portion of the substrate and a second portion of the substrate, and traces on and/or in the substrate, a lead frame that supports the core and that electrically connects the winding to the substrate, and an overmold material encapsulating the core, the spacer, the wire bonds, and a portion of the lead frame.

A high voltage transformer apparatus, including: a tank; a high voltage transformer, disposed upright on one side within the tank, including a first transformer unit configured to generate a positive voltage and a second transformer unit configured to generate a negative voltage; a positive high voltage terminal and a negative high voltage terminal respectively disposed on the other side within the tank opposite to the first transformer unit and the second transformer unit; a first circuit board disposed between the first transformer unit, the first side wall, and the positive high voltage terminal; and a second circuit board disposed between the second transformer unit, the second side wall, and the negative high voltage terminal; wherein the first and second circuit boards are respectively configured to rectify, filter and sample the positive and negative voltages.

The present disclosure discloses a charging system, a charging method, and a power adapter. The charging system includes a battery, a first rectifier, a switch unit, a transformer, a second rectifier, a sampling unit, and a control unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to a current value and/or voltage value sampled by the sampling unit, such that a third voltage with a third ripple waveform outputted by the second rectifier meets a charging requirement. The third voltage is applied to the battery.