A power transmission system, which has a plurality of DC power sources and a load that receives a supply of DC power, is characterized in that: a power priority retrieving device is attached to each DC power source; control is performed by a controller; and the amount of power to be delivered from a DC power source to which a power priority retrieving device is attached to the load is determined on the basis of the retrieved power priority.

A system includes a first power stage circuit having a first PWM input, a first voltage input and a first power output. The first power stage circuit is configured to provide a first current at the first power output responsive to a PWM signal at the first PWM input, and configured to receive a voltage at the first voltage input. The system includes a second power stage circuit having a second PWM input, a second voltage input and a second power output. The second voltage input is coupled to the first voltage input, and the second power stage circuit is configured to provide a second current at the second power output responsive to the PWM signal at the second PWM input. The second power stage circuit is configured to receive the voltage at the second voltage input, the voltage representing an average of the first current and the second current.

In one embodiment, a method includes transmitting multi-phase pulse power from power sourcing equipment to a powered device in a data center, wherein the multi-phase pulse power comprises multiple phases of power delivered in a sequence of pulses defined by alternating low direct current voltage states and high direct current voltage states, and synchronizing the pulses at the power sourcing equipment with the pulses at the powered device.

Systems for power sharing coordination of parallel sources are provided. Aspects include a first DC power supply, a second DC power supply, a first generator controller configured to operate the first DC power source, a first current sensing device coupled between the first DC power supply and the common bus point, a second current sensing device coupled between the common bus point and a load, wherein the first generator controller is configured to receive a first current signal from the first current sensing device, receive a second current signal from the second current sensing device, determine a load share percentage for the first DC power supply, determine a first voltage adjustment based on the first current signal, the second current signal, and the load share percentage, and operate the first DC power supply to adjust a first voltage output by the first voltage adjustment.

An electrical interconnection circuit can be used with a solid-state-transformer (SST) system. The interconnection circuit includes medium voltage direct current (MVDC) to low voltage direct current (LVDC) direct current to direct current (DC/DC) converters, independent LVDC buses respectively connected to one of the MVDC to LVDC DC/DC converters, and an interconnecting DC/DC converter connecting at least two of the independent LVDC buses in order to ensure equal power demand from each MVDC to LVDC DC/DC converters. The interconnecting DC/DC converter is configured to re-route power between the plurality of independent LVDC buses. A power rating of the interconnecting DC/DC converter is set according to power to be rerouted from other LVDC buses via the interconnecting DC/DC converter.

A hybrid power locomotive and an energy balance control method and system thereof is disclosed. In embodiments of the disclosure, the energy utilization rate is maximized by means of self-adaptive matching of the rotating speed and the power, dynamic balance control over the actual output voltage of the power pack is achieved by means of charging and discharging control over the energy storage element, and energy waste and power pack overload are avoided.

Disclosed are systems and methods for a power control system for a vehicle having multiple power sources. The power control system may include a plurality of sensors associated with one or more power sources and a microcontroller configured to receive a plurality of signal inputs, wherein the microcontroller selects a power state for the power control system based at least in part on the plurality of signal inputs from the plurality of sensors. The power state may be selected from a group including a first power state, wherein power is provided to a critical power subsystem, an essential power subsystem, and an auxiliary power subsystem, a second power state, wherein power is provided to the critical power subsystem and the essential power subsystem of the vehicle, and a third power state, wherein power is provided only to the critical power subsystem of the vehicle.

A semiconductor device has a power rail that provides a rail voltage. The power rail is electrically coupled to a plurality of voltage regulators, and each voltage regulator includes an output interface electrically coupled to the power rail, and a first drive path and a second drive path both coupled to the output interface, and an intra-regulator balancing circuit. The first and second drive paths are coupled in parallel with each other, and operate during a first phase and a second phase, at an operating frequency, to provide a first path current and a second path current to the power rail, respectively. The intra-regulator balancing circuit senses the first and second path currents and controls a first duty cycle of the first phase and/or a second duty cycle of the second phase based on a difference of the first and second path currents.

Provided herein is a power distribution system comprising a feedback circuit including a transistor in series with a relay, the feedback circuit regulating regulate a main power path including a main power supply connected in series with an electric power converter. The power distribution system further comprises OR-ing controllers that regulate the main power path and a backup power path including a low-voltage battery. The power distribution system further comprises terminals through which power from the main power path or the backup power path is transmitted to respective components corresponding to channels. The power distribution system further includes a microcontroller that acquires data in each of the channels and control operations associated with each of the channels based on the acquired data.

A charging pile system includes at least two charging piles, charging plugs disposed on the charging piles, the charging plugs are configured to charge a load, and the charging plugs include power cables and communications cables. A charging plug socket is further disposed on at least one charging pile, and the charging plug socket is configured to insert the charging plug on another charging pile into the charging pile on which the charging pile socket is disposed.