In some examples, an electrical power system includes a power source and a load modulator configured to receive power from the power source and to deliver power to a load zone. The electrical power system also includes a controller configured to determine a software-controlled power flow limit for the load zone. The controller is further configured to receive information indicating the power delivered to the load zone and to cause the power delivered to the load zone to remain below the software-controlled power flow limit.

Provided are a method and apparatus for dynamically controlling electrical loads, a storage medium and an electronic apparatus. The method includes that: a current capacity balance of a user sub-region is acquired from an intelligent electricity monitoring and metering terminal through a mobile terminal; when the current capacity balance is smaller than a load power of an electric consumption device to be started in the user sub-region, a regional coordination control apparatus or a server is requested through the mobile terminal to adjust and increase a capacity allocated for the user sub-region, such that a capacity balance will be greater than or equal to the load power; and whether to allow to start the electric consumption device is determined according to a decision replied by the regional coordination control apparatus or the server.

A method for controlling a machine with at least one inverter-operated electric drive unit includes determining the instantaneous mains frequency of the mains supply to the machine and a deviation of the determined mains frequency over a standard frequency of the mains supply, determining a frequency correction value for adjusting the target drive frequency at which the electric motor of the machine is operated by weighting the deviation with a factor k, the factor k being specified dynamically as a function of at least one process variable of the drive load and/or of the operated drive process, and operating the machine at the adjusted target frequency.

An example system includes an aggregator configured to receive a service collaboration request and iteratively determine, based on minimum and maximum power values for DERs under its management, an optimized operation schedule. The aggregator may also be configured to iteratively determine, based on the optimized operation schedule, an estimated flexibility range for devices under its management and output an indication thereof. The system may also include a power management unit (PMU) configured to iteratively receive the indication and determine, based on a network model that includes the estimated flexibility range, a reconfiguration plan and an overall optimized operation schedule for the network. The PMU may also be configured to iteratively cause reconfiguration of the network based on the plan. The PMU and aggregator may also be configured to iteratively, at a fast timescale, cause energy resources under their management to modify operation based on the overall optimized operation schedule.

A wireless power transmitting terminal and control method are disclosed. The wireless power transmitting terminal including an inverter circuit, a resonance circuit and a controller, wherein in a frequency detection state, an alternating current of the inverter circuit is controlled to switch between different candidate frequencies, so as to determine a resonance frequency and a maximum peak value of an electrical parameter of the alternating current at the resonance frequency, and determine an operating state of the power transmitting terminal according to the change of the maximum peak value. Therefore, the wireless power transmitting terminal can dynamically adjust in real time a preset operating state thereof, thereby improving the device adaptability, and avoiding the damage of the device to be charged.

A control device that controls an in-vehicle battery and a charger in a demand and supply control system is configured to obtain total demand for electric power or the like generated in in-vehicle equipment, determine whether or not the total demand is able to be satisfied with electric power or the like suppliable from the in-vehicle battery, when the total demand is not able to be satisfied solely with the in-vehicle battery, and bring the charger into a drive state in a case where the total demand is able to be satisfied with total electric power or the like suppliable from the in-vehicle battery and the charger.

A method includes providing, by processing circuitry, a net resource consumption trajectory including net resource consumption targets for one or more subperiods of a time period. Each net resource consumption target indicates a target difference between resource consumption and resource production or offset for a subperiod of the one or more subperiods. The method includes generating, by the processing circuitry and for a subperiod of the one or more subperiods, a set of actions predicted to achieve the net resource consumption target for the subperiod. The method includes implementing, by the processing circuitry, the set of actions.

A power prediction system includes a battery removably mounted on an electric power device using electric power, a charging device configured to charge the battery, and a power prediction device configured to predict an amount of electric power capable of being supplied by the charging device to outside of the charging device through machine learning on the basis of usage information indicating at least one of the usage state and the usage environment of the charging device.

The present disclosure relates to an apparatus for adjusting AC-DC converter output voltage, the apparatus includes a plurality of ports, an AC-DC converter circuit, a plurality of DC-DC converters coupled to a plurality of controllers, where the plurality of controllers coupled to corresponding plurality of ports to operate the one or more loads, wherein at least one controller is a master controller and the other plurality of controllers are slave controllers. The master controller configured to determine, from the slave controllers power levels for each port, calculate an optimal input voltage value for the DC-DC converters and communicate the calculated value to the AC-DC converter circuit through a constant current source to regulate the amount of DC voltage that is being supplied to the DC-DC converters to operate the one or more loads, thereby leading to improved system efficiency of multiport USB based power adapter.

Techniques for implementing a fault-tolerant power supply are described. In an example, a system converts an alternating-current (AC) voltage to an initial direct current (DC) voltage. The system further converts the initial DC voltage to a first DC voltage and a second DC voltage. The system applies the first DC voltage to a high-priority device such as a metrology device. The system applies the second DC voltage to a low-priority or peripheral device. When the initial DC voltage is outside a voltage range, the system deactivates the second DC voltage to the lower-priority device and maintains the first DC voltage to the metrology device.