472 results about "Voltage regulation" patented technology

Electric heat for generating smoke from tobacco or the like in a hookah type smoking pipe. Electric heat is obtained from an electrically powered heating element which may be placed proximate the tobacco. The heating element may be contained within a housing which in turn may be placed above the smoking chamber of the hookah. The housing may have adjustably damped holes disposed to pass air over the heating element. Electrical circuitry serving the heating element may comprise a step down transformer and a voltage adjusting switch. The heating element may be integral with the hookah, may take the form of a separate component which is mountable over the smoking chamber of the hookah, or may comprise a free standing assembly which may be placed to stand adjacent to the hookah.

The present disclosure provides a fast voltage regulation control circuit of an LDO, and relates to the technical field of integrated circuits, the LDO comprising an input voltage terminal, a power tube, an LDO self-control circuit and an output voltage terminal, the power tube being coupled between the input voltage terminal and the output voltage terminal; the fast voltage regulation control circuit is coupled with the control electrode of the power tube to control the LDO to switch between a fast voltage regulation mode and a self-voltage regulation mode; when the LDO enters the self-voltage regulation mode, the gate voltage applied to the control electrode of the power tube comprises a first gate voltage applied to the control electrode by the LDO self-control circuit; when the LDO enters the fast voltage regulation mode, the gate voltage applied to the control electrode of the power tube comprises the first gate voltage applied to the control electrode by the LDO self-control circuit and a second gate voltage applied to the control electrode by the fast voltage regulation control circuit, so that the gate voltage of the control electrode of the power tube is equal to the sum of the first gate voltage and the second gate voltage, and fast voltage regulation of the LDO output is realized in the fast voltage regulation scenario.

The application discloses a method for reducing energy consumption by optimizing production of a natural power factor and secondary voltage of a ferrosilicon electric arc furnace, and belongs to the technical field of ferrosilicon smelting. The method solves the problems of low power factor, blind secondary voltage regulation, high power consumption and poor furnace stability in the traditional process. The method comprises three-stage operation methods. The first stage is a voltage lifting and furnace condition adapting stage, the second stage is a voltage stabilizing and parameter coordinating optimizing stage, and the third stage is a parameter solidifying and efficiency enhancing stage. The method takes the improvement of the operating resistance of the electric arc furnace as the core, controls the whole process in stages, constructs a benign smelting cycle of "high voltage-low current-high power factor", realizes the synchronous optimization of the natural power factor and the secondary voltage, and greatly improves the economy and production stability of the ferrosilicon smelting.

A voltage regulator apparatus (100) is described comprising: i) a power apparatus (150) configured to receive an input signal (151) and to generate a corresponding output signal (152); ii) a comparator apparatus (110) coupled to the power apparatus (150) via a feedback path (140) and configured to receive the output signal (152) as a feedback signal (141) and to generate a comparison feedback signal (112); and iii) a digital modulation apparatus (120) arranged between the comparator apparatus (110) and the power apparatus (150) and configured to digitally modulate the comparison feedback signal (112) and to provide a digitally modulated signal (121) to the power apparatus (150), wherein the digital modulation apparatus (120) comprises: iiia) a delta-sigma (122), iiib) a quantizer (124), and iiic) a feedforward path (128) configured to feedforward the comparison feedback signal (112) outside the delta-sigma (122).

The application provides a resonant converter, which comprises a half-bridge unit and a resonant unit, an input end of the resonant unit is connected in parallel with an output end of the half-bridge unit, the resonant unit comprises a first capacitor, a first inductor and a transformer, the first capacitor, the first inductor and a primary winding of the transformer are connected in series, the transformer comprises a first secondary winding and a second secondary winding, and the resonant converter further comprises a first output rectification filter unit and a second output rectification filter unit, and the output ends of the first output rectification filter unit and the second output rectification filter unit are connected in parallel to output direct current. The application combines frequency control and duty cycle control, and widens the voltage regulation rate of the resonant converter.

This invention discloses a method and device for bus capacitor energy storage active disturbance rejection voltage regulation control of a multiphase permanent magnet generator. The method establishes a bus capacitor energy balance equation based on the square of the DC bus voltage, and then restructures the equation into a linear active disturbance rejection standard form. A second-order linear extended state observer is designed to estimate the square of the DC bus voltage and the total disturbance in real time. A state feedback control law is designed based on the disturbance compensation principle to generate a virtual control quantity and obtain the linear active disturbance rejection current. The load current is low-pass filtered, and the feedforward current is calculated based on the power balance relationship and superimposed on the linear active disturbance rejection current to obtain the q-axis current reference. This reference current is then limited and subjected to anti-integral saturation processing before output. The difference between the reference current and the q-axis current is subjected to closed-loop control, and the resulting q-axis voltage is used as the generator voltage setpoint. All setpoint voltages are converted into the duty cycle of each phase for output. This invention achieves rapid and stable control of the bus voltage, with strong disturbance rejection capability and rapid dynamic response.

The present application realizes full closed loop voltage regulation without manual intervention, speed improvement, adaptation to long distance low voltage power supply scene, and ensures that the load is always in the rated working voltage range by implementing effective voltage value collection, threshold intelligent judgment and gear automatic switching. The present application discards the carbon brush regulating coil structure of the traditional voltage stabilizer, adopts the scheme of switching transformer fixed gear by AC contactor, improves the service life of the equipment, and greatly simplifies the equipment structure.

A fully-integrated voltage regulation module is fabricated into a single, unitary tile. After tile testing, a selected set of good tiles is fabricated into a single, monolithic substrate in accordance with a selected layout. After substrate testing, the good substrate is then fabricated into a single advanced package.

The application discloses a triangular on-load voltage regulating tap switch and distribution transformer, which comprises a triangular shell, a time sequence contact assembly arranged in a strip layout in the shell and connected in series through a same square shaft, a wiring terminal arranged at each side of the triangular structure of the shell, and a stepping motor horizontally arranged in the shell and arranged in the same direction with the square shaft. The time sequence contact assembly comprises a support seat, a time sequence system arranged on the support seat, and a contact assembly. The time sequence system controls the opening and closing sequence of the vacuum arc-extinguishing chamber, and the contact assembly is driven by the stepping motor to realize gear shifting. The whole switch is installed below the transformer box cover. The application has the advantages of compact structure, convenient wiring, and reliable sealing ensured by integral buried installation. The pure mechanical time sequence system with a transmission ratio of 9:4 synchronizes the gear stepping and time sequence action, can stably realize 9-gear wide-range on-load voltage regulation, and improves the power supply reliability and equipment service life.

Various embodiments disclose a cross-inductor voltage regulator comprising a first switching circuit configuration pair, the first switching circuit configuration pair comprising a first set of switching circuits, a first compensating coupled inductor coupled to the first set of switching circuits, a second set of switching circuits, and a second compensating coupled inductor coupled to the second set of switching circuits, wherein the first compensating coupled inductor comprises a first winding of a compensating coupled transformer and the second compensating coupled inductor is a second winding of the compensating coupled transformer.

This invention provides a high-voltage suppression and voltage regulation protection circuit, relating to the field of circuit protection technology. The circuit includes a high-voltage discharge elimination circuit, a π-type composite EMI filter network circuit, and a voltage regulator circuit connected in sequence, with terminals at both the input and output ends. The high-voltage discharge elimination circuit consists of four DC spark discharge tubes and two varistors. The π-type composite EMI filter network circuit includes two high-voltage ceramic capacitors, two inductors, and one common-mode inductor. The voltage regulator circuit consists of an electrolytic capacitor and a Zener diode. Through the synergistic effect of the front-stage high-voltage elimination, intermediate-stage filtering, and rear-stage voltage regulation, the circuit achieves suppression and voltage regulation protection against high-voltage interference ranging from kilovolts to tens of kilovolts, ensuring continuous normal operation of the circuit system under harsh high-voltage environments.

This invention relates to a hierarchical voltage regulation method for main and distribution networks that considers the regulation capabilities of virtual power plants. First, a multi-resource aggregation model of the virtual power plant, including distributed generation, energy storage, and flexible loads, is constructed to quantify its active / reactive power regulation potential and dynamic response characteristics. Second, a three-layer coordinated control framework of the main grid, distribution network, and virtual power plant is designed, clarifying the control objectives and responsibilities of each layer and establishing a command decomposition and feedback iteration mechanism between layers. Then, a hierarchical optimization mathematical model is constructed. The upper layer performs global optimization with the objectives of minimizing network losses and voltage deviation, while the lower layer dynamically allocates the internal resource output of the virtual power plant based on an improved particle swarm optimization algorithm, achieving hierarchical coordination through alternating iterations. Compared with existing technologies, this invention has advantages such as effectively reducing voltage deviation, lowering system network losses, and significantly improving the voltage stability and resource utilization efficiency of the main and distribution networks.

The application relates to the technical field of battery testing, and particularly provides a battery management system testing device and method, which adopts a modular cascading architecture, a single testing module integrates multiple testing circuits, different-stage battery testing is adapted through a cascading mapping interface, high-precision source tables are greatly reduced, and hardware cost is reduced. A precision resistance network is arranged, a same-source voltage division link is formed by first resistors in series, and common-mode error is eliminated; a relay integrates normally-closed / normally-open contacts, realizes constant conduction of a reference path, and realizes controlled conduction of a voltage regulation / shunt branch. Single-channel independent precise control is realized through I2C+GPIO, a common branch is designed to simplify the circuit, and high precision, high expansibility and operation convenience are considered. Therefore, the problems of high cost caused by the fact that each stage of battery needs an independent source table and poor precision caused by error accumulation in the related art are solved.

This application provides a multi-output flyback converter and power supply system, relating to the field of power supply technology. The multi-output flyback converter includes a control module, a transformer, a primary-side switching module, and multiple synchronous rectifier modules. The primary-side switching module is connected to the primary winding of the transformer, and each synchronous rectifier module is connected to each secondary winding of the transformer. Each synchronous rectifier module includes two back-to-back connected switching transistors. The control module is connected to the control terminals of the primary-side switching module, the control terminals of the two switching transistors in each synchronous rectifier module, and the output terminal of each synchronous rectifier module. The control module is used to adjust the duty cycle of the primary-side switching module according to the actual output voltage of the actively regulated output path; and to adjust the duty cycle of the switching transistors in each non-actively regulated output path according to the actual output voltage of each non-actively regulated output path, thereby eliminating cross-regulation between the outputs.

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.

The application discloses a reactive power voltage regulation method and device based on multi-photovoltaic cooperative game, a device and a medium. The current voltage data of each public connection point is obtained. For each photovoltaic power station, the target direction prediction table of the current voltage regulation period is used to determine the reactive power regulation direction of the neighboring power station corresponding to the photovoltaic power station according to the current voltage data. The preset adjustable amount determination model is used to determine the target reactive power adjustable amount of the neighboring power station according to the reactive power regulation direction. The target multi-photovoltaic cooperative game model is used to calculate the reactive power regulation amount of the photovoltaic power station in the current voltage regulation period according to the target reactive power adjustable amount and the target voltage regulation demand data of the photovoltaic power station. Finally, the photovoltaic power station is regulated based on the reactive power regulation amount. Thus, the cooperative game theory and the distributed control strategy are used to realize adaptive voltage regulation of the power distribution network with many changes, so as to meet the actual application requirements and improve the voltage safety.

A first voltage regulation circuit is coupled to a second voltage regulation circuit. Control circuitry is coupled to the first voltage regulation circuit and the second voltage regulation circuit. The control circuitry determines that a signal criterion is met, and controls application of a voltage signal generated by the second voltage regulation circuit to stabilize a voltage signal generated by the first voltage regulation circuit.

This invention relates to a multi-branch flexible voltage regulating device, control method, equipment, and medium for power distribution networks. The multi-branch flexible voltage regulating device includes a multi-port transformer with an integrated voltage regulating mechanism, an incoming circuit breaker, and multiple branch circuit breakers. The incoming circuit breaker is connected to the input port of the multi-port transformer, and each branch circuit breaker is connected to the output port of the multi-port transformer. The input ports of the multi-port transformer are connected to the external power distribution network, and each output port of the multi-port transformer is connected to an external branch load. By connecting multiple branch loads through the multi-port transformer with the integrated voltage regulating mechanism, the voltage of multiple branch loads can be automatically, rapidly, and independently regulated differentiatedly by adjusting the operating state of the voltage regulating mechanism to meet the voltage regulation needs of different branch loads, effectively suppressing voltage fluctuations and significantly improving power quality.

The present disclosure relates to multiphase switching voltage regulators and controllers. A controller for a multiphase switching voltage regulator includes a first control loop and a second control loop. The first control loop has a first set of coefficients for implementing pulse width modulation (PWM) and a second set of coefficients for implementing pulse frequency modulation (PFM). The second control loop is configured to implement phase current balancing for the multiphase switching voltage regulator. In a first configuration, the first control loop is configured to implement PWM-based control of the multiphase switching voltage regulator using the first set of coefficients. In a second configuration, the first control loop is configured to implement PFM-based control of the multiphase switching voltage regulator using the second set of coefficients.

This disclosure relates to a power supply circuit, a power adapter, and an electronic device. The power supply circuit includes at least two flyback converter units. On the voltage input side, the at least two flyback converter units are connected in series between two voltage input terminals. On the voltage output side, the at least two flyback converter units are connected in parallel between two voltage output terminals. The at least two flyback converter units are configured to receive control signals and, according to the control signals, control at least one of the at least two flyback converter units to release energy, while the other flyback converter units store energy. This effectively achieves wide-range voltage regulation and improves the overall efficiency of the power supply circuit.

The application discloses a kind of integrated fuel pump power supply voltage dynamic compensation method and system, it is related to voltage regulating field, comprising: obtaining the real-time operating parameter of fuel pump, at least including load current, speed feedback value and power supply line impedance;Based on the real-time operating parameter, through the voltage drop prediction model of pre-training, generate predicted voltage drop value;According to the predicted voltage drop value and power supply end reference output voltage, calculate dynamic compensation coefficient;Through the dynamic compensation coefficient, feedforward compensation is carried out to power supply voltage, generate compensated drive voltage, and with the compensated drive voltage control fuel pump operation.The application solves the problem that the power supply voltage fluctuation of fuel pump in the prior art is too large, which leads to unstable operation of fuel pump and reduced performance.

The application discloses a circuit and method for improving transient load response of constant voltage power supply, which comprises a voltage regulator and a load balancing structure. The method comprises: when the external load current is in a stable state, the charging diode is in a reverse cut-off state; when the external load current is in an increasing state, the output load voltage of the voltage regulator is in a falling state, the charging diode is in a conducting state, and the energy storage capacitor performs voltage compensation processing on the voltage regulator; and when the external load current is in a decreasing state, the output load voltage of the voltage regulator is in a rising state, and the voltage regulator performs charging processing on the energy storage capacitor. The application can improve the transient load response of the constant voltage power supply, reduce the voltage fluctuation amplitude and accelerate the response speed. The application can be widely applied to the technical field of power supply circuits.

This utility model provides a high-performance power board, including a power input, a filter circuit, a surge protection circuit, a power conversion module, and a power output module. The power conversion module includes a full-bridge switching circuit and a transformer. The power conversion module has multiple independent outputs. A digital potentiometer is connected to the voltage regulation module of each independent output of the power conversion module, and the value of each independent output of the power conversion module is adjusted based on circuit feedback. This utility model device has the advantages of small size, high stability, and multi-channel adjustable output.

The application belongs to the technical field of low power consumption, and particularly relates to a low power consumption design method and device with adaptive voltage regulation. The method comprises the following steps: 1) simulating a key path of an analog-digital circuit, wherein the key path refers to a path with the maximum delay in the digital circuit; 2) generating a test clock signal and a sampling clock signal, and inputting the generated test clock signal into the key path; 3) detecting the output signal of the key path by using the sampling clock signal with the same sampling time and / or different sampling times, and controlling and adjusting the power supply voltage of the digital circuit according to the detection result, so as to determine the minimum power consumption voltage for ensuring the normal operation of the digital circuit. The application uses the key path to represent a complex load, and has simple structure and wide application range. The power supply voltage of the circuit is controlled and adjusted according to the voltage detection result, so that the control precision and the adjustment efficiency are improved, the minimum voltage for ensuring the normal operation of the circuit is determined, and energy saving is achieved.

A power supply circuit according to the present disclosure includes a voltage monitoring part and a voltage adjusting part. The voltage monitoring part is configured to monitor an input voltage of a DC-DC (Direct Current-Direct Current) converter. The voltage adjusting part is configured to adjust an output voltage of the DC-DC converter by increasing the output voltage of the DC-DC converter when the input voltage falls below a reference voltage at a time of transition from a normal mode to a power-saving mode.

The utility model discloses LED lamp control circuit and the bulb and the lamp string of application of this circuit, this scheme cleverly through rectifier module access commercial power supply, then again by voltage regulation module to the voltage of access power supply is regulated and controlled, then it is introduced MCU drive module and is powered, through MCU drive module to LED module carries out the working control to realize the synchronous or asynchronous work of multiple LED lamp pearl on LED module, when synchronous work, it can make multiple LED lamp pearl synchronous bright and dark, and when asynchronous work, can realize the light of flowing light lamp or other asynchronous working lamp effect, provide reliable hardware foundation for bulb as atmosphere to set off lamp, and after the circuit board of LED lamp control circuit setting and bulb, bulb can directly by commercial power supply, make it as lamp string use bulb, can not need further through external adapter and carry out power supply voltage regulation and control again power supply, this scheme is reliable and application nimble not only, has better market application prospect and value.

Some embodiments of this application provide a voltage detector including an input gate configured to receive an input voltage and a reference voltage, and an input device and a protection device, each having a low threshold voltage. The voltage detector also includes a current source, a load connected to a first diode, a load connected to a second diode, a first pre-charge device and a second pre-charge device, and an input differential amplifier composed of devices whose threshold voltage is significantly higher than the low threshold voltage. This voltage detector is capable of operating at a supply voltage approximately twice the upper limit of the operating voltage range of the input device. The voltage detector in the "on" state is configured to pull up or pull down the output voltage at the output of the differential amplifier when the input voltage is higher or lower than the reference voltage, respectively. This application also provides a voltage regulator including the above-described voltage detector.