Abstract: The present disclosure relates to a method and system for determining, applying, and/or managing the state-of-health of fuel cell to control the lifespan of the fuel cell in a vehicle and/or powertrain.

Abstract: A control module (120,120a-b) for controlling a plurality of power switching elements (111a-d) arranged for controlling provision of power to one or more wireless network devices (125a-c); wherein the control module (120,120a-b) comprises a processor (122) arranged for: determining which one of the plurality of power switching elements (111a-d) the control module (120,120a-b) receives power through; determining a set of the plurality of wireless network devices (125a-c) which receives power via a first power switching element out of the plurality of power switching elements (111a-d); determining that the set includes all the wireless network devices which receive power via the first power switching element; determining operational state of each of the wireless network devices in the set; determining whether the control module (120,120a-b) receives power via the first power switching element; evaluating a first set of conditions; wherein the first set of conditions comprises that the control module (120,120a-b

Abstract: An illustrative example embodiment of a wireless power transfer device includes an inductor panel and a capacitor panel adjacent the inductor panel. The capacitor panel includes a first conductive plate adjacent one side of the inductor panel, a dielectric layer adjacent the first conductive plate, and a second conductive plate adjacent the dielectric layer on an opposite side of the dielectric layer from the first conductive plate.

Abstract: A dynamic capacitive power transfer system for an elevator that can realize the real-time powering of the elevator when it is in the moving status. It includes a metal track along the building side as the power transmitter and a piece of metal at the elevator side as the power receiver. There is a gap between the transmitter and receiver, and up to kW power can be transferred wirelessly and efficiently to serve the air conditioner, lightning, and other electronic devices in the moving car. The steel wheels and ropes may be used to connect the moving car to the earth ground, which contributes to form the current returning loop. It eliminates the electric cables and the corresponding flexible cable carrier system for the linear movement.

Abstract: A power management server comprises a controller configured to select, from a plurality of facilities having storage battery apparatuses, two or more first facilities applying first processing configured to suppress a discharge amount of the storage battery apparatuses. The controller is configured to apply, to the two or more first facilities, a same condition as a suppression condition of the discharge amount of the storage battery apparatuses.

Abstract: A vehicular apparatus includes a first power supply circuit, a second power supply circuit, a correction unit, and a sensor configured to detect an angular velocity or acceleration applied to a vehicle. The first power supply circuit is configured to perform a first power supply with a first minimum operating voltage. The second power supply circuit is configured to perform a second power supply with a second minimum operating voltage set to be lower than the first minimum operating voltage. The second power supply circuit is enabled to start the second power supply before an engine of a vehicle is started. The correction unit is configured to perform a process related to a zero point correction of the sensor. Herein, the sensor and the correction unit are configured to receive the second power supply from the second power supply circuit.

Abstract: A system for discharging or charging a capacitor of a hybrid vehicle according to the present disclosure includes a target state of charge (SOC) module and a capacitor charge/discharge module. The target SOC module determines a target state of charge of the capacitor based on a speed of the vehicle. The capacitor charge/discharge module determines whether a state of charge of a capacitor is greater than a target state of charge. The capacitor charge/discharge module dissipates power from the capacitor to at least one of a battery of the vehicle and an electrical load of the vehicle when the state of charge of the capacitor is greater than the target state of charge.

Abstract: A mobile power system may include a bidirectional AC-DC converter configured to convert a grid AC signal to a power limited DC charging signal with a threshold level, a battery module configured to provide a DC power signal, and a controller coupled to the battery module and the bidirectional AC-DC converter and configured to selectively switch the bidirectional AC-DC converter between a first state and a second state. The first state may include, when a load power level is less than the threshold level, concurrently charging the battery module using the power limited DC charging signal and delivering the grid AC signal to a load. The second state may include, when the load power level is greater than the threshold level, concurrently converting the DC power signal with the bidirectional AC-DC converter into a battery AC signal for delivery to the load, and delivering the grid AC signal to the load.

Abstract: Provided is an power and communications network convergence system including wireless base stations, and DC grid groups, each grid group belonging to a cell. Each grid in the grid group has a DC line to which devices including a power generator and a power-storage are connected, and performs, based on state-information on each device, first control for reducing power fluctuations in the line. A first grid belonging to a cell performs, based on state-information on each grid, second control for interchanging power with a second grid belonging to the cell. If a power situation of a first grid group belonging to a first cell and a power-situation of a second grid group belonging to a second cell satisfy a preset condition, the first grid group performs third control for interchanging power with the second grid group.

Abstract: Excess DC current generated by a fuel cell stack may be provided to a current source inverter, and an AC current may be output by the current source inverter to a grid side bus. The AC current on the grid side bus may be used to support a load demand on a microgrid side bus or provided to a power grid. Various transmission buses and electric conditioning and control devices, such as rectifiers, current source inverters, motors, generators, electric contactors, relays, and/or transfer switches may be configured to use the AC current on the grid side bus to provide an AC current to the microgrid side bus to support the load demand on a microgrid side bus.

Abstract: The present disclosure relates to a power supply control method for a vehicle, a vehicle, a control unit, a computer-readable storage medium and a computer program product. The vehicle comprises an electrical equipment, a relay and a power interface, wherein the power interface is electrically coupled to the electrical equipment via the relay. The method comprises: determining whether the power interface is coupled to an external power source; determining whether a voltage of the external power source is within a predetermined range when the power interface is coupled to the external power source; and controlling the relay to be switched on in response to the voltage of the external power source being within the predetermined range.

Abstract: An in-vehicle backup power supply device includes a battery unit having a plurality of unit batteries connected in series and a discharge circuit configured to perform a first discharge operation for supplying power to a third conductive path based on a charge accumulated in the battery unit, a balance circuit performs a cell balancing operation on the battery unit, and a control unit controls the balance circuit, and the balance circuit is performs a second discharge operation for supplying power to the third conductive path based on a charge accumulated in a plurality of power storage elements, and the control unit performs a first control for causing the balance circuit to perform the cell balancing operation and a second control for causing the balance circuit to perform the second discharge operation, and if a failure in which the first discharge operation cannot operate normally occurs, performs the second control.

Abstract: A master-slave communication system for a single-phase to multi-phase AC power supply includes a master and a plurality of slaves that are connected in parallel and configured to supply single-phase to multi-phase AC power. The master and the slaves each include a main communication control board and at least one phase communication control board. The main communication control board is in communication with the corresponding phase communication control board. The master and an adjacent one of the slaves as well as every adjacent two of the slaves are in communication with each other through a network transmission cable connected between the main communication control boards, thereby improving the communication transmission speed and reliability between the master and the slaves and further improving the output quality of the AC power supply.

Abstract: A master-slave communication system for a single-phase to multi-phase AC power supply includes a master and a plurality of slaves that are connected in parallel and configured to supply single-phase to multi-phase AC power. The master includes a main communication control board and at least one phase communication control board. The main communication control board is in communication with the phase communication control board. The slaves each include at least one phase communication control board. The master and an adjacent one of the slaves as well as every adjacent two of the slaves are in communication with each other through a network transmission cable connected between the network connection ports of the same phase, thereby improving the communication transmission speed and reliability between the master and the slaves and further improving the output quality of the AC power supply.

Abstract: A scalable power unit for powering one or more electric motors of a riding vehicle and/or a piece of outdoor power equipment includes a number of interconnected battery packs. The battery pack are received in a battery tray or stacked to form the scalable power unit. Each battery pack is configured to be removed and used separately or added to a combination of battery packs. A control unit selectively opens and closes switching elements to separately control the connections between the battery packs and an electrical load, such as a motor. During charging, the control unit opens and closes switching elements to control the charging rate of the individual battery packs. When the battery packs are connected to an electrical load, the control unit controls the state of the switching elements to selectively discharge the battery packs to power the riding vehicle and/or electric loads.

Abstract: The technology described herein relates to polarization adaptive wireless power transmission systems. In an implementation, a wireless power transmission system is described. The wireless power transmission system includes an antenna array and control circuitry operatively coupled to the antenna array. The control circuitry is configured to determine polarization information of a beacon signal received from a client device at multiple antennas of the antenna array. The beacon signal is transmitted by a client device in a wireless power delivery environment. The control circuitry is further configured to configure polarization information associated with each of the multiple antennas to match the polarization information determined at respective antennas of the multiple antennas. The present technology enables different wireless power receiver clients to have different polarizations. The wireless power transmission system can efficiently send power to the client devices by matching their polarization.

Abstract: The present disclosure relates to a control method, a load and a power grid system. The method includes: detecting (S102) a voltage change parameter on a power supply side; analyzing (S104) a load control strategy corresponding to the voltage change parameter; controlling (S106) an operation of the load according to the load control strategy. The solution solves the problem of inadequate communication facilities in the DC micro-grid, the DC home communication can be completed without or with less dedicated communication circuits, accordingly the system cost is reduced.

Abstract: A device may include a rectifier circuit providing a rectified DC signal, a rechargeable energy-storage element, and a power-management integrated circuit (PMIC). The PMIC may include a charging circuit for the rechargeable energy-storage element; a current-sensing circuit that measures a current provided by the rectified DC signal; a programmable current limit; a voltage-sensing circuit that measures a voltage on the rechargeable energy-storage element; and a controller that regulates the current provided to a DC output of the PMIC. the DC output of the PMIC may be regulated based at least in part on the current provided by the rectified DC signal; the programmable current limit; and the voltage on the rechargeable energy-storage element. The DC output of the PMIC may provide energy to a plurality of other energy-consuming subsystems on the device and to the charging circuit for the rechargeable energy-storage element.

Abstract: A system for powering a device is disclosed. The system includes at least one internal battery located in a device, at least one external battery connected to the device, and a master controller configured to connect either the at least one internal battery or the at least one external battery to a power bus to power the device.

Abstract: A system for providing redundant electric power to at least one vehicle component is disclosed. The system includes at least one power management unit connectable to a vehicle power network; and one or more storage units coupled to the at least one power management unit for receiving electric power to be stored in the one or more storage units. The at least one vehicle component is connectable to at least two of the storage units to enable a redundant electric power supply.