155 results about "Power conditioner" patented technology

To provide various techniques for preventing a theft of electric cables in a photovoltaic power generation facility.SOLUTION: There is provided a theft prevention system of electric cables in a photovoltaic power generation facility. The theft prevention system includes a power conditioner, a string part, and a processor. The power conditioner includes a resistance measurement part. The resistance measurement part can acquire measurement data. The measurement data is the data indicating a resistance value of a circuit including the string part. The string part includes a plurality of cell parts and is electrically connected to the power conditioner at least via the electric cables. The cell parts can acquire sunlight energy by conversion into a direct current. The processor acquires the measurement data from the resistance measurement part. Data related to a theft of the electric cables is output in response to a change in the resistance value indicated by the measurement data.SELECTED DRAWING: Figure 1

A method for operating a voltage regulator is disclosed. The voltage regulator includes a first transistor and a second transistor, wherein a source of the first transistor is coupled to a supply rail, a drain of the first transistor is coupled to an output of the voltage regulator, a source of the second transistor is coupled to the output of the voltage regulator, and a drain of the second transistor is coupled to a gate of the first transistor via a feedback path. The method includes generating a current, passing the current through a resistor and a third transistor to generate a reference voltage, adjusting a resistance of the third transistor based on an output voltage at the output of the voltage regulator, and inputting the reference voltage to a gate of the second transistor.

To provide a power supply system capable of improving followability of power supply to a demand change without reducing power generation efficiency.SOLUTION: A power supply system 1000 comprises a plurality of power generation units 100 operated in a parallel state to a commercial power source system 500 and a system controller 18 which supervises control states of the power generation units 100. The power generation unit 100 includes a power generation module 20, a power conditioner 16, and a local controller 17. The system controller divides the power generation unit 100 into any one of a first group of maximum output fixed machines, a second group of minimum output fixed machines, a third group of output adjustment machines, and a fourth group of output standby machines and controls total output power of the system by selecting a combination of groups on the basis of purchase power information from the commercial power source system 500.SELECTED DRAWING: Figure 3

A power regulator device, a power distribution device and related methods and systems for managing power consumption in electric vehicle supply equipment (EVSE) stations. The power regulator device includes an interconnector attached to an EVSE cable, a storage module for receiving a modulation configuration, and a filtering module for intercepting and altering the signal transmitted from the EVSE station to the electric vehicle. The power distribution device is configured to receive a load configuration and a list of EVSE controllers, measure the total load, and communicate modulation configurations to the EVSE controllers to manage power consumption. The system, designed to operate on a mesh network, includes multiple EVSE stations, power distribution devices, and a centralized monitoring agent for managing and controlling power consumption across the EVSE stations.

Digital logic voltage regulators and related methods generate a regulated voltage via controlled switching of a power transistor. A digital logic voltage regulator includes a voltage level comparator, a power transistor, and a charge accumulator. The voltage level comparator generates a digital control signal that alternates between a first voltage level and a second voltage level in response to changes in relative voltage level between the regulated output voltage and the target voltage. The digital control signal causes the power transistor to switch from off to on in response to a reduction of the regulated output voltage relative to the target voltage and causes the power transistor to switch from on to off in response to an increase of the regulated output voltage relative to the target voltage. The charge accumulator decreases variation in the regulated output voltage that would occur without the charge accumulator.

To provide a power supply system capable of effectively utilizing a device having a power supply function.SOLUTION: A power supply system comprises: a power conditioner 12; a switching board 3; a system-side electric outlet 8a which is connected to a first voltage line and a neural line of a power line 4 and is not connected to a second voltage line; and a system-side electric plug 20 which is connected to an electric cable 21 connected to the power conditioner 12, and is connectable to an electric outlet capable of supplying power. A power generation device 9 is an AC 100 V power source connected to the first voltage line and the neutral line constituting the power line 4, a power supply to the power line 4 is regulated so as not to supply power from the power line 4 to the switching board 3 which is provided at an upstream side of the power line 4, and the system-side electric plug 20 can be connected to the system-side electric outlet 8a.SELECTED DRAWING: Figure 1

A power conditioner system includes: a power conditioner that converts DC power output from a string into AC power; and an arc detection device that detects generation of an arc in an electric path connecting the string and the power conditioner. The arc detection device includes a current sensor, an arc determination unit, a recording unit, and a communication unit. The current sensor detects a current flowing through the electric path. The arc determination unit outputs a first control signal for switching an opening / closing device from the closed state to the open state when it is determined that the arc has been generated. The recording unit records the data used by the arc determination unit to determine the generation of the arc. The communication unit transmits the determination result and the determination data of the arc determination unit when the arc determination unit determines that the arc has been generated.

Regulator circuitry configured to manage power supply ripple using an adaptive loop gain that offers ripple rejection performance related to the ripple magnitude for a negative closed loop of the regulator circuitry. The power supply regulator circuitry of this disclosure includes an error amplifier in the closed loop and an adaptive loop gain circuitry. The adaptive loop gain circuit removes a DC component of the sensed output and feeds the sensed output, including the output ripple, to peak detector circuitry to obtain a Vpeak signal. The Vpeak signal output from the peak detector circuitry is a continuous signal that tracks the wave peak. The circuit arrangement multiplies the output of the error amplifier by the signal Vpeak resulting in improved power supply ripple rejection as the ripple amplitude increases. To avoid control signal with zero value during times that the peak-to-peak value of the sensed voltage.

To provide a redox flow battery system capable of improving the efficiency thereof.SOLUTION: A redox flow battery system includes a charging section 2, a discharging section 3 and a storage section 4 storing an electrolyte. The charging section includes at least one charging cell stack and a charging side power conditioner. The discharging section includes: at least one discharging cell stack where at least two discharging cells of a plurality of discharging cells are electrically connected in series; and a discharging side power conditioner electrically connected to the at least one discharging cell stack. The charging side power conditioner has such characteristics that a conversion efficiency of the charging side power conditioner increases as a charging voltage increases, within an acceptable voltage range of the charging side power conditioner, and the discharging side power conditioner has such characteristics that a conversion efficiency of the discharging side power conditioner increases as a discharging voltage decreases, within an acceptable voltage range of the discharging side power conditioner.SELECTED DRAWING: Figure 1

In some examples, a self-starting bandgap circuit is provided. It may include one or more chopping circuits to reduce pre-trim inaccuracies. It may also, or alternatively, include an adaptive bandgap supply regulator and / or a start-up comparator to speed up the bandgap circuit's ability to come up with an adequate bandgap reference voltage.

A vehicle includes a chassis supporting a plurality of wheels, a prime mover supported by the chassis, and a vehicle body supported by the chassis and including a main body and a cab. A boom assembly is coupled to the main body, including an electric actuator and an electric motor, and an electrical accessory equipment system is also coupled to the main body. The electrical accessory equipment system comprises one or more batteries and an electric power control box housing a power conditioner that is configured to supply power from the one or more batteries to the electric actuator and / or the electric motor.

This product is a power regulator for industrial equipment that connects power cables to power lines in factories, etc., to provide efficient current supply and change the quality of noise that causes malfunctions, thereby reducing the frequency of malfunctions.

To provide a power-saving power supply device for power saving.SOLUTION: A power-saving power supply device is configured to include a first transformer 10 connectable to an external power source 70, a second transformer 20 electrically connected to the first transformer 10 via connecting lines 10a and 10b, a smoothing capacitor 30 connected in parallel between connecting lines 20a and 20b, and a power regulator 40 electrically connected to the second transformer 20 via the connecting lines 20a and 20b and connectable to a load 50. According to the configuration, by changing the winding ratio of a primary coil 11 and a secondary coil 12 in the first transformer 10 and the number of arrangements of the primary coil of the second transformer 20, the ratio of suppressing the output of the external power source 70 for the power required in the load 50 can be changed to a desired value.SELECTED DRAWING: Figure 1

A power regulation unit is provided for regulating power to or from a power tool battery pack. The power regulation unit includes power regulation circuitry and a controller. The power regulation circuitry is configured to regulate a received power. The controller is connected to the power regulation circuitry. The controller is configured to receive input power from one or more battery cells, regulate the input power by performing at least one of a voltage regulation and a current regulation, and output a regulated output power. For voltage regulation, the regulated output power includes a constant voltage regardless of an operating current of the power tool. For current regulation, the regulated output power includes a constant voltage up to a predetermined current threshold.

This invention relates to the field of single-phase power regulation technology, and more particularly to a multifunctional single-phase power regulator, comprising: a main circuit module for connecting the power supply and load and setting power regulation devices in series; an internal power supply and voltage regulation module that draws power from the main circuit and performs current limiting, rectification, and voltage regulation; a control and regulation module that generates control signals based on input signals and main circuit parameters under its power supply; a trigger suppression and synchronous start module that prohibits triggering before the power supply is stable or synchronization conditions are met; a protection monitoring module for monitoring main circuit parameters and prohibiting triggering in case of abnormalities; and a heat dissipation and maintenance module with an independent disassembly and assembly structure. In this invention, by drawing power from the main circuit and uniformly supplying power to the control and trigger modules for coordinated operation, control conditions are synchronously established when the main circuit is turned on, thereby improving the problem of false triggering and inconsistent start-up that easily occurs in traditional single-phase power regulators due to asynchronous power supply between the main control and the main circuit.

In some embodiments, a system comprises: a differential multi-level converter with a differential input for receiving two different voltages; a plurality of switches coupled between the input terminals; and a capacitor having a first terminal coupled to the first terminal of the first of the plurality of switches, and a second terminal coupled to the first terminal of the second, other of the plurality of switches; and an output terminal coupled to the first terminal of the third, other of the plurality of switches. The differential multi-level converter can be part of a hybrid power supply generator / modulator.The system may further include a controller configured to control selected switches from the plurality of switches so that they switch between a plurality of switching states at times, each switching state producing an output voltage corresponding to one of three discrete voltage levels.

A power module comprises a high frequency switching electronic power conditioner including stacked rectifier / filters, the stacked rectifier / filters generating stacked DC output voltages; and a vacuum electronic device coupled to the high frequency switching electronic power conditioner, the vacuum electronic device including components, each component receiving a respective DC output voltage of the stacked DC output voltages.

To make more effective use of the electricity generated by a solar panel.SOLUTION: A power conditioner 100 includes a voltage detection unit 101 that detects the output voltage of a solar cell panel 200, a current detection unit 102 that detects the output current of the solar cell panel 200, an inverter circuit 105 that can convert the power generated by the solar cell panel 200 into AC power and supply it to a load 300, and a control unit 106 that stops the switching operation of an inverter circuit 105 for at least a part of a period during which the power generated by the solar cell panel 200 is equal to or less than a predetermined inverter stop power on the basis of the detection values of the voltage detection unit 101 and the current detection unit 102, and the power conditioner 100 is connected to a second DC / DC converter circuit 402a that can operate in a charging mode in which the power generated by the solar cell panel 200 is supplied to a vehicle battery 401a.SELECTED DRAWING: Figure 1

The uninterrupted power supply for existing smart locks includes one or more rechargeable batteries, a power conditioner, a solar panel, and an AC adapter. The uninterrupted power supply for existing smart locks may be operable to provide uninterruptable power to a smart lock coupled to a door. The one or more rechargeable batteries may replace one or more disposable batteries in the smart lock and may electrically couple to the power conditioner. The power conditioner may electrically couple to the solar panel, the AC adapter, or both and may condition power from the solar panel and / or the AC adapter for use in recharging the one or more rechargeable batteries. As non-limiting examples, the solar panel may be mounted on the exterior side of the door, the interior side of the door, or elsewhere on the exterior of the building.

To provide a power conditioner system including a charge / discharge stand of a vehicle, capable of stabilizing voltage of a DC link and appropriately executing power transfer between the vehicle and a storage battery.SOLUTION: A method includes a step of selecting a battery unit that executes charging / discharging operation for controlling voltage of a DC link 21, a step of charging all battery units 10 and a vehicle battery unit 71 when PV≥PL+PB+PC, and a step of discharging all the battery units 10 and the vehicle battery unit 71 when PV≤PL+PB+PC and PL≥PV.SELECTED DRAWING: Figure 3

The present invention comprises: a plurality of divided primary windings (Lp1, Lp2); and switching elements (Q1, Q2), the number of which corresponds to the number of the divided primary windings (Lp1, Lp2). In a converter (10), the switching elements (Q1, Q2) are respectively connected in series to the divided primary windings (Lp1, Lp2). The converter (10) performs on / off control of the switching elements (Q1, Q2) to intermittently apply an input voltage (Vi) to the primary winding (Lp) of a transformer (T), and rectifies, smooths, and outputs an induced voltage that is generated in a secondary winding (Ls) of the transformer T.

The present disclosure provides methods and apparatus for use with energy management systems. For example, an energy management system comprises a gateway and distributed energy resources coupled to a corresponding plurality of power conditioners and a distributed energy resource controller in operative communication with the plurality of power conditioners via power line communication, wherein the distributed energy resource controller is configured to generate a unique preamble for each power conditioner of the plurality of power conditioners and transmit the unique preamble to each power conditioner of the plurality of power conditioners to communicate with each power conditioner of the plurality of power conditioners via power line communication.

A regulator circuit arrangement designed to manage power supply ripple using adaptive loop gain, providing ripple suppression performance with respect to ripple magnitude for a negative closed-loop regulator circuit arrangement. The power supply regulator circuit arrangement of this disclosure includes a closed-loop error amplifier and an adaptive loop gain circuit arrangement. The adaptive loop gain circuit removes a DC component from the captured output and feeds the captured output, including the output ripple, into the peak detector circuit arrangement to obtain a Vpeak signal. The Vpeak signal output by the peak detector circuit arrangement is a continuous signal that tracks the wave peak.The circuit arrangement multiplies the output of the error amplifier by the signal Vpeak, resulting in improved power supply ripple suppression as the ripple amplitude increases. This prevents a zero-value control signal during periods when the peak-to-trough value of the detected voltage is high.

[Problem] To compensate power pulsation generated in a DC link unit with a device provided in the DC link unit when a system interconnection inverter connected to the DC link unit and interconnected with a three-phase system power supply outputs three-phase unbalanced power. [Solution] A control device controls one or a plurality of devices that transmits first DC power to a DC link unit or receive the first DC power from the DC link unit. The first DC power includes first power pulsation, which is an AC component. The DC link unit is configured to be capable of transmitting and receiving second DC power to and from a system interconnection inverter that is connected to the DC link unit and interconnects with a three-phase system power supply. The control device includes a pulsation detection unit that detects a second power pulsation, which is an AC component included in a second DC power, and adjusts the first power pulsation according to the second power pulsation detected by the pulsation detection unit.

To provide a technology for integrally operating a plurality of distributed power supply systems in conjunction with each other.SOLUTION: A distributed power supply system that is interconnected with a commercial power system and supplies power to a load, the distributed power supply system comprising: a first power supply system including a first storage battery and a first power conditioner; a second power supply system including a second storage battery and a second power conditioner; and an operation control for performing at least one of first operation control for charging and discharging the first storage battery and the second storage battery in accordance with a preset priority order or second operation control for transferring power between the first storage battery and the second storage battery; And a controller configured to instruct the first power conditioner and the second power conditioner to perform operation control.SELECTED DRAWING: Figure 1

A power module comprises a high frequency switching electronic power conditioner including stacked rectifier / filters, the stacked rectifier / filters generating stacked DC output voltages; and a vacuum electronic device coupled to the high frequency switching electronic power conditioner, the vacuum electronic device including components, each component receiving a respective DC output voltage of the stacked DC output voltages.

This power conditioner includes an inverter that converts DC power into AC power and supplies the AC power to a power system, and a control device that controls the inverter. The control device estimates the system voltage on the basis of the output current of the inverter and the characteristics of the impedance between the inverter and the power system. Moreover, the control device generates a correction voltage on the basis of a voltage obtained by removing the high-frequency component from a differential voltage which is the difference between the estimated system voltage and a target voltage. Furthermore, the control device issues an instruction to the inverter on the basis of the voltage obtained by adding the correction voltage to the target voltage.

A system for operating an LC-VCO includes: a low power, low phase noise inductance capacitance voltage controlled oscillator (LC-VCO); an LC-VCO power supply regulator configured to regulate a power supply voltage to the LC-VCO; and a feedback network connected to the LC-VCO power supply regulator. The feedback network is configured to track a process voltage temperature (PVT) variation of a metal oxide semiconductor field effect transistor (MOSFET) used in a negative transconductance circuit of the LC-VCO, and adjust a loop gain of the LC-VCO over the PVT variation. The feedback network includes: a first MOSFET, where the first MOSFET is configured to function as a switch; a first resistor connected to both ends of the first MOSFET; a current source device biased with a bandgap voltage; the diode and current mirror pair comprises a second MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) and a third MOSFET; and a constant current source connected to the current source device and the diode and current mirror pair.

This approach allows for suppression of inrush current while minimizing the increase in the size of the power converter, compared to a system where the power converter is equipped with a function to prevent inrush current. [Solution] The power system 1 includes a grid-connected inverter 12 capable of mutually converting AC power from an AC power source 30 and DC power from a DC bus line 51, a power conditioner 10 equipped with a smoothing capacitor 13 connected to the DC bus line 51, a rectifier 64 that converts AC power to DC power, a surge protection circuit 61 provided between the DC bus line 51 and the rectifier 64, or between the rectifier 64 and the AC power source 30, and a hybrid device 60 that can operate by receiving DC power from the DC bus line 51 or DC power from the rectifier 64. When the voltage across the smoothing capacitor 13 is less than a predetermined value, the smoothing capacitor 13 is charged via the surge protection circuit, and then the hybrid device 60 is made to operate.

An energy storage system is provided, comprising: a DC bus; a plurality of batteries connected to the DC bus and connected in parallel; a plurality of diagnostic units, each of which is provided for each of the plurality of batteries and measures the aging state of a battery contained in the plurality of batteries by causing the battery to be discharged at a constant current or power; and a power conditioner connected to the DC bus and performing a conversion between DC and AC, wherein at least a portion of the power discharged from a battery under test among the plurality of batteries, the aging state of which is measured by the diagnostic unit, is charged into another at least one battery among the plurality of batteries or supplied to the power conditioner.