摘要:
Techniques are provided for providing power onto multiple power distribution paths. Power controller devices receive power from a power source device and are coupled to first and second multiplexer units. The multiplexer units receive power from the power source devices via the power controller devices for first and second power distribution paths. A multiplexer control unit controls the multiplexer units to output power from the first power distribution path, the second power distribution path or both of the paths. Power subsystems are provided comprising first and second power transistor units. The first transistor unit receives power from the first multiplexer unit over the first path and the second transistor unit receives power from the second multiplexer unit over the second path. Ports are provided and are coupled to a powered device. The multiplexer control unit controls the multiplexer units to supply power to the respective ports according to the type of powered device detected at a port.
摘要:
A domestic appliance having a control device to control device components of the domestic appliance during execution of a program, wherein the device components have electrical loads. The domestic appliance also has a switch to at least partly de-energize the control device after the program has finished executing.
摘要:
A power storage system for supplying power to a load by coupling a power generation system, a battery, and a grid, the power storage system includes a battery management system (BMS) for controlling charging and discharging of the battery and a power supply circuit for supplying power to the BMS, wherein the power supply circuit is configured to supply external power to the BMS as an operating power of the BMS in a first state in which the external power is applied, and the power supply circuit is configured to supply power of the battery to the BMS as the operating power of the BMS in a second state in which the external power is not applied.
摘要:
Systems and methods to balance currents among a plurality of photovoltaic units connected in series. In aspect, a management unit is coupled between a photovoltaic energy production unit and a string of energy production units. The management unit has an energy storage element (e.g., a capacitor) connected to the photovoltaic energy production unit. The management unit further has a switch to selectively couple to the energy storage element and the photovoltaic energy production unit to the string. The management unit allows the current in the string to be larger than the current in the photovoltaic energy production unit.
摘要:
In one embodiment, to maintain the operation stability of a semiconductor device even when an external voltage changes. An input signal discrimination unit operates with a power supply potential supplied from a first power supply line VDDI. The input signal discrimination unit compares an input signal VIN with a reference potential Vref. The comparison result is inverted into a signal V0 by an inverter INV1. A power supply sensor circuit monitors the potential of the first power supply line VDDI. If an external potential VDDI falls below a reference potential VX, the power supply sensor circuit turns on a second current source. When the second current source is turned on, an operating current is supplied to a discrimination unit from the second current source as well as a first current source.
摘要:
The aim of the invention is to use a separate device between the analog and digital communications lines to convert the digital load sharing information from the digital communication line to the analog communication line and vice versa. The device does not generate power itself for the load sharing and therefore does not disturb the load sharing of the generators on the both sides of the device. The device can be seen as a gate between the digital communication line and the analog communication line. The device simulates load situation of the generator/s connected to the digital communication line for load sharing with other generator/s connected to the analog communication line, and similarly it simulates load situation of the other generator/s connected to the analog communication line for load sharing with the generator/s connected to the digital communication line
摘要:
Power monitoring circuitry. In some embodiments, comparator circuitry may be configured to receive a first voltage value and a second voltage value, and to identify the greater of the first and second voltage values. Selector circuitry coupled to the comparator circuitry may be configured to power one or more components within the comparator circuitry with a supply voltage corresponding to the greater voltage value. In other embodiments, a method may include identifying, via a comparator, the largest among a plurality of voltage values, and powering one or more logic components within the comparator with the identified voltage value.
摘要:
The power converter includes a first operation mode in which each of switching elements is controlled on or off independently so as to perform a power conversion between a load and both a first DC power source and a second DC power source and a second operation mode in which every two of the switching elements are controlled on or off concurrently so as to perform the power conversion between the load and the first DC power source or the second DC power source. A switching speed at which when each of the switching elements is turned on or turned off is controlled in accordance with the operation mode. Specifically, the switching speed in the second operation mode is higher than the switching speed in the first operation mode.
摘要:
A system and method of monitoring a photovoltaic (PV) installation includes providing a string of multiple panel interface device enabled PV panels; operatively connecting an inverter to the string; operatively connecting at least one PV panel to the string; discharging an input capacitance of the inverter; comparing a current in the string to a predetermined current threshold value; and controlling connection of the at least one PV panel to the string based on the comparing of the current in the string to the predetermined current threshold value. A panel interface device may be used to discharge the input capacitance of the inverter.
摘要:
A PhotoVoltaic (PV) panel bypass switching arrangement includes first and second switches. The first switch is to be coupled between a power system and a first end of a circuit path of the PV panel in which a PV cells are connected, and is controllable to connect the first end of the circuit path to a power system and to disconnect the first end of the circuit path from the power system. The second switch is to be coupled between (i) a point between the first switch and the power system and (ii) a point between a second end of the circuit path and the power system, and is controllable to open and close a bypass circuit path that bypasses the circuit path. The first and second switches are controlled based on a determination as to whether the circuit path of the PV panel is to be bypassed.