An electrical power module and transport refrigeration system. The electrical power module is used for an apparatus powered by a battery or/and a fuel, has a working mode and includes: a DC buck module configured to step-down a DC at least provided by the battery to a low-voltage output DC for output, or/and a DC boost module configured to step-up a low-voltage input DC provided by the apparatus powered by the fuel to a high-voltage DC for output; and a control module connected to a transport refrigeration unit, and configured to, in the working mode, control the operation of the DC buck module or/and the DC boost module.

A DC/DC converter includes a semiconductor switch S1 and is configured to convert an input voltage by turning on and off the semiconductor switch S1. A semiconductor switch S2 is connected between a main power supply and input of the DC/DC converter. A semiconductor switch S3 is connected between a connection point between the semiconductor switch S2 and the input of the DC/DC converter and the backup power supply. A control unit turns on the semiconductor switch S2 and the semiconductor switch S3 in a normal state, and turns off the semiconductor switch S2 and turns on the semiconductor switch S3 when an abnormality occurs in the main power supply.

A disclosed wireless power transmitting apparatus comprises: a plate; a transmitting coil that transmits wireless power to a cooking device disposed on the plate; a driving circuit that applies a current to the transmitting coil; a communication module that communicates with the cooking device; and a control unit that controls the driving circuit such that the wireless power is periodically transmitted on the basis of a transmission period of the wireless power determined by discharge characteristics of the cooking device when the cooking device enters a standby mode.

A chip with power-glitch detection is provided, which includes a power terminal receiving power, an inverter, and a back-up power storage device coupled to the power terminal. The inverter has an input terminal coupled to the power terminal. The back-up power storage device transforms the power to back-up power. The inverter is powered by the back-up power when a power glitch occurs on the power terminal, and the power glitch is reflected at an output terminal of the inverter.

A system, a device, a method, a communication protocol, and/or the like, for energy management in a fragment, heterogeneous, electrical grid. The grid may include multiple types of power generation systems, electrical energy storage systems, electrical loads, and efficiently managing these systems may require elements that will bridge the technology gap of these systems, as well as provide best-effort power generation and consumption in order to stabilize the grid. These techniques are especially important in differentiated electric energy networks, such as micro-grids, island grids, virtual power plants, and/or the like.

Methods and systems for managing energy consumption during a power-loss event provide a backup power unit that can notify electronic devices of a switch to backup power. The electronic devices can then automatically minimize power consumption upon receiving such notification. The notification can take the form of one or more signals indicative of a backup power operational state. The signals may be sent to the electronic devices over any suitable wired or wireless connection. Depending on the particular operational states, the electronic devices can take one or more predefined backup power handling actions, such as reducing device functionality, entering low-power mode, performing a controlled shutdown, and the like. The particular actions taken may depend on the type of devices, such that certain devices may have power consumption priority over other devices. The above arrangement provides an intelligent way to reduce overall energy consumption during a power-loss event.

The embodiments of the present disclosure provide a switching method and a multi-input power system, where the method is used to control an input power source connected with N power supply units, and N is greater than 1, and the method includes: determining a switching strategy for each power supply unit, where the switching strategy is used to indicate a moment when input of a power supply unit is switched from an auxiliary input power source to a main input power source; switching, according to the switching strategy, the input of each power supply unit from the auxiliary input power source to the main input power source at the moment indicated by the switching strategy, where the main input power source includes a standby power source.

A system for supplying adapted power to an electronic device with a reduced level of power consumption when the device is not in use includes a first power supplying module, a control module coupled to the first power supplying module, and an MCU coupled to the control module and coupled to the electronic device. The MCU is configured to switch on the first power supplying module when the first power supplying module is in a normal state, the normal state being an AC power supply coupled to the first power supplying module. The MCU detects an instant mode of the electronic device and outputs a first signal to the control module when the electronic device is in a standby mode. The control module is configured to switch off the first power supplying module when the first signal is received. A power supplying method is further provided.

A method for enabling communication over a cellular network between a first communication device of a first substation and a second communication device of a second substation. The substations are connected to a power transmission line. The method includes the steps of: receiving multicast communication from the first communication device, wherein the multicast communication including a plurality of multicast packets, and each multicast packet includes a phasor value associated with the first substation and a sequence number; receiving an acknowledgement from the second communication device, the acknowledgement including a plurality of sequence numbers of the most recently received multicast packets, that the second communication device has received from the first communication device; and determining a packet loss to the second communication device when there is a mismatch between the sequence numbers of the acknowledgment, when compared with the sequence numbers of the received multicast communication.

The present disclosure provides a power system that includes a set of power devices and addressing lines. The set of power devices are electrically connected to a main power source, a standby power source and a server node. The addressing lines are electrically connected to the set of power devices, so that the set of power devices can correspond to a plurality of different addressing signals respectively. The set of power devices are switched at different times based on the different addressing signals, so that one of the main power source or the standby power source supplies power to the server node though the set of power devices.