Disclosed herein is a modular, scalable, and galvanically isolated power electronics converter topology for medium voltage AC (MVAC) to DC or high voltage AC (HVAC) to DC power conversion. A disclosed modular converter can comprise a low-voltage direct current bus and a centralized controller configured to regulate the low-voltage direct current bus. The modular converter can further comprise a plurality of three-phase blocks connected in series. Individual three-phase blocks of the plurality of three-phase blocks can comprise a plurality of single-phase modules connected in an input-series output-parallel configuration. The modular converter can further comprise a filter connected between a grid input and the plurality of three-phase blocks and a pulse-width modulator configured to generate encoded gate pulses for the individual three-phase blocks of the plurality of three-phase blocks.

This application provides a power rectification method and apparatus, to supply power to a load by using a power supply capacity gap formed by a communications power that is at an existing network site, thereby achieving a capacity increase. The method includes: obtaining a total input current of each of three phase lines; and when it is determined that a total input current of at least one of the three phase lines is greater than a total input current threshold corresponding to the at least one phase line, adjusting a rectifier connected to the at least one phase line to reduce a total input power of the at least one phase line, so that the total input current of the at least one phase line is less than or equal to the total input current threshold corresponding to the at least one phase line.

A multiphase buck converter that includes smart two-phase power stages for reducing switching losses. Each of the smart power stages includes a first high side switch, a second high side switch, a first low side switch, a second low side switch, a switching capacitor, a first inductor, and a second inductor. The exemplary multiphase buck converter includes two such smart power stages and a multiphase controller for generating PWM signals for driving the two smart power stages synchronously.

This application provides a power rectification method and apparatus, to supply power to a load by using a power supply capacity gap formed by a communications power that is at an existing network site, thereby achieving a capacity increase. The method includes: obtaining a total input current of each of three phase lines; and when it is determined that a total input current of at least one of the three phase lines is greater than a total input current threshold corresponding to the at least one phase line, adjusting a rectifier connected to the at least one phase line to reduce a total input power of the at least one phase line, so that the total input current of the at least one phase line is less than or equal to the total input current threshold corresponding to the at least one phase line.

Disclosed herein is a modular, scalable, and galvanically isolated power electronics converter topology for medium voltage AC (MVAC) to DC or high voltage AC (HVAC) to DC power conversion. A disclosed modular converter can comprise a low-voltage direct current bus and a centralized controller configured to regulate the low-voltage direct current bus. The modular converter can further comprise a plurality of three-phase blocks connected in series. Individual three-phase blocks of the plurality of three-phase blocks can comprise a plurality of single-phase modules connected in an input-series output-parallel configuration. The modular converter can further comprise a filter connected between a grid input and the plurality of three-phase blocks and a pulse-width modulator configured to generate encoded gate pulses for the individual three-phase blocks of the plurality of three-phase blocks.

A rectifier circuit having first and second match circuits, a bias circuit, first and second switches is provided. The first match circuit has first and second terminals and receives a first input signal. The second match circuit receives a second input signal. The bias circuit provides a first bias voltage to the second terminal of the first match circuit and a second bias voltage to the first terminal of the second match circuit. The first switch is coupled to the first terminal of the first match circuit and an output terminal of the rectifier circuit and updates an output signal according to the first input signal. The second switch is coupled to the second terminal of the second match circuit and the output terminal and updates the output signal according to the second input signal.

A rectifier circuit having first and second match circuits, a bias circuit, first and second switches is provided. The first match circuit has first and second terminals and receives a first input signal. The second match circuit receives a second input signal. The bias circuit provides a first bias voltage to the second terminal of the first match circuit and a second bias voltage to the first terminal of the second match circuit. The first switch is coupled to the first terminal of the first match circuit and an output terminal of the rectifier circuit and updates an output signal according to the first input signal. The second switch is coupled to the second terminal of the second match circuit and the output terminal and updates the output signal according to the second input signal.