105 results about "Power conditioner" patented technology

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 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.

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.

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.

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

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.

[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

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.

The invention relates to the technical field of electrified railway traction power supply systems, in particular to a railway power regulator integrated with cooperative energy routing, which adopts a double-direct-current bus framework, and the overall topology is divided into three core layers, namely a power routing layer, an isolation conversion layer and a source storage interface layer; a control method of a railway power regulator integrated with cooperative energy routing comprises the following steps: operation state sensing: based on a distributed data acquisition architecture, acquiring parameters at a frequency of 10kHz, preprocessing acquired data, and constructing a real-time state matrix; energy flow priority self-adaptive decision making: based on the real-time state matrix, performing intelligent switching among three operation modes by adopting a decision making mechanism combining hierarchical threshold judgment and multi-objective optimization; and dynamic coordination control and smooth switching: according to the operation mode determined by the decision, calling a corresponding core control algorithm to execute control, and realizing seamless switching between modes through a weighted smoothing strategy based on a Sigmoid function to suppress voltage impact and power abrupt change.

To provide a hydrogen production system capable of preventing non-green hydrogen from being mixed with green hydrogen in a tank while avoiding the stop of an electrolytic cell even when generated power is insufficient and a storage battery is not charged.SOLUTION: The hydrogen production system includes a power conditioner configured to convert DC power generated by a solar panel into AC power, a storage battery device, a hydrogen production device including a rectifier configured to rectify the AC power to obtain DC power and an electrolyzer configured to generate hydrogen by electrolysis using the DC power from the rectifier, a green hydrogen tank, a non-green hydrogen tank, and a control device. The control device is configured to, when a total of supply power from the power conditioner and the storage battery device to the rectifier is smaller than first reference power that can avoid deterioration of the electrolytic cell, further supply system power to the rectifier to control the supply power to the rectifier to the first reference power, and store hydrogen generated in the electrolytic cell in the non-green hydrogen tank.SELECTED DRAWING: Figure 1

In some embodiments, a hybrid generator / modulator comprises: a regulation stage having a single input and at least two outputs, the regulation stage configured to receive an input voltage at the single input and to provide two intermediate voltages at respective ones of the at least two outputs; and a multilevel converter configured to receive the two intermediate voltages and provide an output voltage having a voltage level corresponding to a voltage level of one of the two intermediate voltages or at least one other voltage level synthesized from the two intermediate voltages.

[Problem] To adjust power pulsation caused to a DC link unit due to fluctuations in power consumption of electrical equipment connected to the DC link unit. [Solution] This control device controls one or more converters for transmitting first DC power to a DC link unit. The first DC power includes a first power pulsation, which is an AC component. The DC link unit is configured to be capable of transmitting second DC power to electrical equipment connected to the DC link unit. The control device comprises a pulsation acquisition unit for acquiring a second power pulsation, which is an AC component included in the second DC power, and adjusts the first power pulsation in accordance with the second power pulsation acquired by the pulsation acquisition unit.

A field device for an industrial process includes field device circuitry, an APL communication circuit, and a power circuit. The power circuit includes a power regulator configured to regulate DC power that powers the field device circuitry and the APL communication circuit, a main power sensor configured to generate a main power signal that corresponds to the DC power, a voltage shunt regulator configured to divert excess power to a circuit common, and an excess power sensor configured to generate an excess power signal that corresponds to a magnitude of the excess power. The power regulator adjusts the DC power based on the main power signal and the excess power signal.

A power conditioner with neutral line offset current compensation function, includes a power converter, a measurement unit, a control module, and two coupling capacitors connected through the neutral line to a three-phase AC grid. The power conditioner eliminates the offset current on the neutral line by compensating the inaccuracies in the measurement unit with the control module, thus minimizing the voltage deviation of the coupling capacitors. Compared to traditional control circuits, a feedback path is added to achieve the elimination of the neutral line offset current, suppressing unstable and unpredictable voltage fluctuations on the coupling capacitors without affecting the rated power transmission of the power converter, thus extending the lifespan of the coupling capacitors and enabling the power conditioner to operate more stably.

A power conditioner is provided with 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. The control device generates a correction voltage on the basis of a voltage obtained by removing a high-frequency component of a differential voltage, which is the difference between the estimated system voltage and the target voltage. Furthermore, the control device instructs the inverter on the basis of a voltage obtained by adding the correction voltage to the target voltage.

The utility model discloses a three-phase power regulator, which relates to the technical field of power regulators and comprises a case body, a control mainboard, a trigger mainboard and a thyristor are mounted in the case body, a trigger is mounted on the trigger mainboard, and a left metal plate and a right metal plate are mounted on two opposite sides of the case body. A second trigger line is arranged on the left side of the left metal plate, one end of the second trigger line penetrates through the left metal plate and then is connected with the control mainboard, the other end of the second trigger line penetrates through the left metal plate and then is connected with the trigger mainboard, and a first trigger line is arranged on the right side of the right metal plate. One end of the first trigger line penetrates through the right metal plate and then is connected with the trigger, the other end of the first trigger line penetrates through the right metal plate and then is connected with the thyristor, circuits are isolated independently through the left metal side plate and the right metal side plate, the wiring mode is optimized, electromagnetic interference suffered by the trigger line is reduced, circuit arrangement is more reasonable, and the optimization effect is good.

To provide a power conditioner capable of miniaturizing a housing and improving cooling efficiency.SOLUTION: A power conditioner 1 includes: a first circuit board 20 provided with power system components; a second circuit board 30 provided with control system components; a shielding unit 40 for forming a shielding space; and a conductive housing 10 having an internal space for storing them. The first circuit board 20 is provided on an inner rear surface 11A of the housing 10, and the second circuit board 30 is provided in front of the first circuit board 20. The shielding unit 40 includes: a conductive first shielding plate 40A provided between the first circuit board 20 and the second circuit board 30, and a conductive second shielding plate 40B having a front end unit electrically connected to the first shielding plate 40A and a rear end unit electrically connected to the front surface 20A of the first circuit board 20 and the inner rear surface 11A of the housing 10.SELECTED DRAWING: Figure 3

To reduce overall power consumption for an electronic display power management integrated circuit (PMIC), one of multiple electric power converters and / or electric power regulators may be selected based on an electrical load (e.g., due to the total brightness of the content displayed) on the electronic display at a given moment. In some embodiments, the PMIC may include a less efficient heavy load converter designed with high-current handling capability and a more efficient light load (e.g., low current) converter with lower current handling capability. A controller may dynamically select between the converters depending on a present load or an expected load on the electronic display.