20 results about "Dsp controller" patented technology

The invention relates to the technical field of electronics, and discloses a VOT compensation-based single-phase interleaved CRM PFC digital control system and method, and the system comprises a DSP controller, a first power loop, a second power loop, a first off-chip comparator, a second off-chip comparator, and a driver. An EPWM driving module, an ADC sampling module, an on-chip DC digital comparator module and a TZ trigger interrupt module are integrated in the DSP controller, a 2P2Z controller, a voltage feedforward operation unit, a current detection verification unit and a temperature protection unit are further arranged in the DSP controller, the TZ trigger interrupt module is provided with a TZ2 pin and a TZ3 pin, and the EPWM driving module is provided with a first comparison register CMPA, a period register TBPRD and a second comparison register CMPB. The first power loop and the second power loop form a single-phase and two-phase staggered Boost topology, and the two Boost circuits are staggered and connected in parallel at a 180-degree initial phase and are jointly connected to the same PFC bus. According to the invention, the circuit design is simplified, the dynamic stability of inductive current interleaving is optimized, and the THD index of the power supply is improved.

This invention discloses a protection threshold correction method, system, device, and medium, belonging to the field of power systems. The method comprises: a control measurement circuit measuring a first reference physical quantity in a power circuit to obtain multiple first sampling signals; processing each first sampling signal using initial parameters of a DSP controller to obtain each first digital signal; fitting each first digital signal and each first reference physical quantity to obtain DSP target parameters; a control signal generator outputting multiple analog signals to the sampling circuit; a comparator circuit triggering a protection action when the current sampling signal is greater than a trigger threshold; the DSP determining the actual protection threshold corresponding to the current digital signal based on the target parameters and the current sampling signal; and finally obtaining a preset protection threshold and correcting the actual protection threshold using the target parameters. Therefore, by implementing this invention, protection thresholds can be accurately calibrated without power instruments, reducing errors and improving the reliability of hardware protection in power electronic devices.

The invention relates to the technical field of air compressor control, and particularly discloses an uninterruptible power supply system and method for an air compressor control system, a main power supply module outputs stable voltage through filtering, power factor correction and voltage stabilization processing; and the standby power supply module takes the lithium iron phosphate storage battery pack as a core and is matched with the conversion circuit to output same-frequency and same-phase alternating current. And the switching regulation and control module realizes gapless switching between the main power and the standby power through synchronous detection and the bidirectional thyristor switch group. The state monitoring module collects data in multiple dimensions, the intelligent control module analyzes the state and issues an instruction based on the DSP controller, and the energy storage management module achieves accurate charging and discharging and battery equalization adjustment. Power supply is continuous and stable, quality is high, energy consumption is low, operation and maintenance are convenient, continuous operation of the air compressor control system can be guaranteed, and production interruption is avoided.

The utility model relates to a charger power module sampling compensation circuit, including resistance -capacity partial pressure network, voltage follower, differential current sampling amplifier and first low pass filter, resistance -capacity partial pressure network is used for gathering voltage signal from power module output end, and the voltage signal is scaled down with the existing bias voltage each other superimposes and generates input signal and then is delivered to voltage follower, voltage follower is used for generating first signal based on input signal, differential current sampling amplifier is used for gathering current signal from the current sampling resistance of power module output end and converts current signal into second signal, and second signal can generate third signal with first signal superposition, first low pass filter converts third signal into final sampling signal and exports final sampling signal to DSP controller, the utility model discloses under the condition that guaranteeing LLC resonant converter output voltage wide range, has reduced the overhead of DSP controller.

The invention discloses an active filtering and reactive compensation adaptive control method, and belongs to the technical field of rail transit power systems. The method comprises the steps that S1, real-time monitoring is conducted, an active power filter (APF) is connected into a power grid and controlled by a DSP controller to be switched between an operation mode and a shutdown mode, and the DSP controller is electrically connected with a communication interface; s2, condition monitoring is triggered, switching between an operation mode and a shutdown mode is achieved, and the switching modes comprise automatic switching according to the rail transit operation time period and remote switching by receiving an instruction through a communication interface of a DSP controller; s3, dual-mode purification of electric energy quality: in an operation mode, an active power filter APF starts a harmonic compensation function and dynamically tracks a target power factor in a reactive mode; and in the shutdown mode, the active power filter APF closes the harmonic compensation function and outputs fixed inductive reactive power. The operation time period of the rail transit is matched with the two modes of the active power filter APF, so that the self-adaptive control of the electric energy quality can be realized according to the operation condition of the rail transit.

The application provides an underwater single-capacitance wireless power transmission system and an automatic tuning method, and belongs to the field of power transmission.The system comprises a power supply, a load, a primary side full-bridge converter, a secondary side full-bridge converter, an energy transmission electrode plate, a primary side signal sampling module, a secondary side signal sampling module and a DSP controller.The power supply, the primary side full-bridge converter, the energy transmission electrode plate, the secondary side full-bridge converter and the load are sequentially connected to transmit the current at the power supply to the load.The primary side signal sampling module collects the primary side voltage and current, the secondary side signal sampling module collects the secondary side voltage and current, the primary side voltage and current and the secondary side voltage and current are transmitted to the DSP controller through WiFi, the DSP controller calculates the ZVS angle according to the primary side voltage and current, calculates the system efficiency according to the primary side voltage and current and the secondary side voltage and current, and adjusts the working frequency of the primary side full-bridge converter.The application improves the stability and efficiency of underwater power transmission.

The application provides a wireless power supply method and system for a high-power underwater vehicle and a charging pile. The system comprises a transmitting unit, a receiving unit, a wireless communication module and a magnetic coupling module. The transmitting unit comprises a DC power supply, a first rectification and voltage stabilization circuit, a high-frequency inverter circuit, a transmitting side compensation circuit and a DSP controller. The receiving unit comprises a receiving side compensation circuit, a second rectification and voltage stabilization circuit, a charging management module, a power battery and a circuit sampling module. The DSP controller is configured to generate a phase shift angle control signal and a switching frequency adjustment signal based on electrical signals fed back by the transmitting unit and the receiving unit during charging of the underwater vehicle with the built-in receiving unit by the transmitting unit, so as to adjust the current output of the transmitting unit and maintain the resonance state. Through the above technical solution, a high-power, high-efficiency and high-stability underwater wireless power supply system suitable for dynamic marine environments is constructed.

This invention relates to the field of reactive power compensation technology in power distribution networks, and particularly to a method and device for coordinated optimization of reactive power compensation in rolling mills. It achieves dynamic reactive power compensation for system loads by supplying power to SVG and FC via the main transformer. The SVG employs a fully controlled H-bridge chain structure, adjusting the trigger pulse to ensure its output voltage is in phase and frequency with the system voltage. A DSP controller monitors grid parameters in real time, dynamically adjusting the SVG's continuously adjustable reactive power output within the inductive to capacitive range. The FC provides fixed capacitive reactive power support. A comprehensive protection and self-diagnostic system is configured to achieve multi-level protection and rapid fault location and isolation. The advantages of this invention are: the use of an H-bridge chain SVG structure based on fully controlled IGBTs, combined with DSP fully digital control, enables continuous and rapid adjustment from rated inductive to capacitive capacity, reducing response time, effectively tracking severe fluctuations in rolling mill loads, significantly improving the power factor, and reducing voltage fluctuations and flicker.

The invention discloses a circuit board test device and system and a test control method thereof, and the device comprises an FPGA controller which receives a control instruction of an external DSP controller through a communication module, and issues a first control signal to a signal collection module under the control of the control instruction; the signal acquisition module acquires an acquisition electric signal at a test point corresponding to the circuit board to be tested through an electrically connected probe array according to the received first control signal, and transmits the corresponding acquisition electric signal to the FPGA controller; and the FPGA controller judges whether the test point corresponding to the circuit board to be tested is normal or not according to the received acquisition electric signal. According to the invention, an automatic and intelligent test process is realized, whether the circuit board to be tested is normal or not can be rapidly and accurately judged, the whole test device is small in size and simple in structure, the production cost can be effectively reduced, the product quality and the production efficiency can be improved, and large-scale batch production and application are facilitated.

The invention discloses a protection circuit for detecting drain-source voltage of a SicMOSFET based on a high-speed isolation operational amplifier, which is applied to a motor driver of a motor and comprises an impact suppression circuit arranged in an electric driver circuit, the input end of the impact suppression circuit is connected with a capacitor and an inverter bridge in parallel, the impact suppression circuit is provided with a SicMOSFET tube, and the SicMOSFET tube is connected with the inverter bridge in parallel. The output end of the SicMOSFET is connected with a high-speed isolation operational amplifier conditioning circuit, the high-speed isolation operational amplifier conditioning circuit is used for detecting drain-source voltage of the SicMOSFET, and the output end of the high-speed isolation operational amplifier conditioning circuit is connected with a DSP controller. According to the invention, the drain-source voltage of the SicMOSFET tube can be monitored in real time, the DSP controller is matched to drive the motor to work in different states according to the value of the drain-source voltage, the current passing through the SicMOSFET tube is reduced, the SicMOSFET tube is protected from being damaged due to overheating, and the use reliability of the impact suppression circuit of the motor driver is improved.

The invention discloses a control method and system based on a brushless direct current motor, the method is operated in a controller with a DSP as a core, and the DSP controller comprises an enhanced pulse width modulation module and an enhanced capture module; the method comprises the following steps: querying a commutation vector table to determine a corresponding motor rotor position according to a captured Hall signal of the brushless direct current motor; according to the rotor position, multiple paths of PWM control signals are generated through multiple output channels of an enhanced pulse width modulation module and are output to corresponding motor driving chips; according to the PWM control signal, a power switch tube in the three-phase full-bridge inverter circuit is driven to be switched on and switched off, and commutation and continuous rotation of the brushless direct current motor are controlled; the duty ratio of the output waveform is adjusted, the equivalent voltage applied to the three-phase full-bridge inverter circuit is changed, and the rotating speed of the brushless direct current motor is adjusted; the DSP controller adjusts the query logic of the commutation vector table or controls the output state of the enhanced pulse width modulation module, and changes the rotation direction of the motor or executes a stop operation.

The application provides a ramjet engine controller and a ramjet engine. The ramjet engine controller comprises an engine software control module and a motor software control module arranged in the same digital signal processor. The running period of the engine software control module is longer than that of the motor software control module. The engine software control module and the motor software control module are called through timing interruption. The engine software control module and the motor software control module are integrated in the same digital signal processor, and the calling between the two modules is realized through timing interruption. The single-core controller scheme is realized. The engine control and the motor driving control function are realized under the condition of the single-DSP controller hardware. The hardware size and cost are greatly reduced.

The utility model discloses a rail transit power supply cable high-low traveling wave measurement system, and relates to the field of traveling wave measurement. According to the utility model, the current transformer with two characteristics of high precision and strong saturation resistance is configured, the multi-way switch is combined to realize intelligent switching of measurement channels, the FIFO memory is utilized to carry out data buffer storage, and the parallel comparator is adopted to realize real-time threshold judgment. When the impact current is detected, the DSP controller rapidly switches the measurement channels and completes data splicing, thereby effectively solving the problem that a single sensor cannot give consideration to both precision and anti-saturation capability.

The application relates to the field of electronic technology and discloses a single-phase interleaved CRM PFC digital control system and method based on VOT compensation, which comprises a DSP controller, a first power loop, a second power loop, a first off-chip comparator, a second off-chip comparator and a driver. The DSP controller is internally integrated with an EPWM driving module, an ADC sampling module, an on-chip DC digital comparator module and a TZ trigger interrupt module, and is further internally provided with a 2P2Z controller, a voltage feed-forward operation unit, a current detection checking unit and a temperature protection unit. The TZ trigger interrupt module is provided with a TZ2 pin and a TZ3 pin, and the EPWM driving module is configured with a first comparison register CMPA, a period register TBPRD and a second comparison register CMPB. The first power loop and the second power loop form a single-phase two-phase interleaved Boost topology, two Boost circuits are connected in parallel with an initial phase difference of 180 degrees, and are commonly connected to the same PFC bus. The application simplifies the circuit design, optimizes the dynamic stability of inductance current interleaving and improves the power THD index.

The utility model discloses a pneumatic clamp water circulation device convenient to adjust temperature, and relates to the technical field of pneumatic clamp heat preservation, the pneumatic clamp water circulation device comprises an air cylinder, the outer surface of the air cylinder is sleeved with a heat exchange mechanism, and a temperature adjusting mechanism is fixedly installed on one side of the heat exchange mechanism. By the adoption of the structure, the device is provided with the heat exchange mechanism, cold and hot water can be supplied as required through the temperature adjusting mechanism in actual use, the temperature sensor detects the temperature in the cavity, and when the temperature is too low, the DSP controller controls the heating assembly to prepare hot water, and the hot water is discharged into the sleeve through the water pump to be preheated; and the refrigerating assembly and the heating assembly are independently arranged, so that quick response and accurate temperature regulation can be realized when the temperature of the air cylinder changes quickly, the air cylinder is heated at low temperature and cooled at high temperature, reliable guarantee is provided for stable operation of the air cylinder, and the overall temperature control is more accurate and quick.

The invention relates to the technical field of medical treatment, and discloses a respiratory training device capable of monitoring tidal volume for a tracheal intubation patient, the respiratory training device comprises a connecting tube, the bottom of the connecting tube is fixedly connected with a tube body, the bottom of the tube body is fixedly connected with a tap, and the two sides of the tap are fixedly connected with a connector tube and a training tube respectively; branch pipes are fixedly connected to the front portion and the rear portion of the right end of the training pipe respectively, when gas passes through the branch pipes, a gas flow sensor in a humidity detector can sense the gas, a specific numerical value is displayed on a display screen on the front side of the humidity detector through processing of a DSP controller, and on the basis of the humidity value, the real-time monitoring of the real-time monitoring of the real-time monitoring of the real-time monitoring of the real-time monitoring of the real-time monitoring of the real-time monitoring is achieved. When a patient subsequently uses the breathing machine communicated with the connector tube to assist in breathing, medical staff can be helped to set the air inlet amount and the air suction amount of the breathing machine, and meanwhile the medical staff can be helped to judge whether breathing of the patient reaches a normal value or not according to the tidal value so as to judge whether extubation of a lung intubation can be carried out or not.

This invention discloses a low-voltage standby automatic transfer control method and device compatible with photovoltaic (PV) and energy storage, applied to a primary / standby power switching system. The method includes: at the moment of a mains power failure, utilizing an integrated hybrid inverter module, before the ATS physically disconnects the mains power, dynamically buffering the load through energy storage batteries to compensate for the difference between the power required by the load and the actual output power of the PV, thereby maintaining the stability of the load-side voltage and frequency; seamlessly switching from mains power to a combined PV and energy storage power supply mode without affecting the power quality on the load side; and after the switch is completed, dynamically adjusting the discharge depth and rate of the energy storage based on real-time light intensity and load changes using an adaptive impedance matching algorithm. This invention, by setting up a hybrid inverter integrating a high-speed DSP controller and a voltage source inverter topology, enables smooth, efficient, and seamless switching and coordinated power supply between the grid, PV, energy storage, and load during automatic grid switching.

The utility model discloses a ship traction inverter, including PCB circuit board, be equipped with a plurality of power module on the PCB circuit board, the input side of power module is connected with the input copper row, the output side of power module is connected with the output copper row, be equipped with input DC bus capacitor on the input copper row, be connected with the current sensor on the output copper row, the radiator of setting in the other side of power module is connected with the PCB circuit board, be equipped with DSP controller, drive circuit, sampling circuit, protection circuit, auxiliary power supply circuit, communication circuit on the PCB circuit board, be equipped with the current amplification circuit of connection drive circuit on the PCB circuit board. This inverter realizes efficient control through embedded chip, and optimizes the layout between power device, DC bus capacitor and control circuit board, reduces the use of connecting cable, this inverter simplifies the heat dissipation structure, improves system reliability, reduces design and manufacturing cost.

This application provides a distributed control device and method for hot-plugging multiple active bridge transformer submodules, comprising: a resistor divider circuit electrically connected to a high-frequency AC bus, used to convert the high-frequency AC bus voltage into a 0-5V divided voltage signal; a voltage comparator electrically connected to the output of the resistor divider circuit, comparing the divided voltage signal with a set reference potential and outputting high and low level digital signals; a DSP controller electrically connected to the voltage comparator, which sets a phase qualification flag when the phase difference between the local counter and the zero-phase reference t0 is less than a phase threshold; and a transformer submodule electrically connected to the DSP controller, which controls an AC relay to close to connect to the high-frequency AC bus when it receives the phase qualification flag from the DSP controller. This invention addresses the problems of related technologies that often employ centralized control, over-reliance on a central controller, and limitations in computing power and flexibility, especially as the number of modules increases.

The utility model relates to the technical field of power supply regulation, and discloses an automatic regulating device for an electric dust removal high-frequency power supply, which aims to solve the problems that dust removal voltages required by different dust concentrations are different, the output voltage of an electric dust remover needs to be manually regulated, the operation is troublesome, and the working efficiency is reduced. When the automatic regulating device for the electric precipitation high-frequency power supply is started, the dust concentration sensor can detect dust concentration and transmit a dust concentration numerical value into the DSP controller, and the DSP controller outputs a required numerical value signal into the three-phase alternating current contactor according to the dust concentration numerical value; the current is converted by the three-phase rectifier filter, the isolation driver, the full-bridge high-frequency inverter, the high-frequency boosting transformer and the high-frequency rectifier, so that the direct-current high voltage required by the electric dust remover is met, the electric dust remover can operate, and the power supply voltage input by the electric dust remover can be adjusted according to the dust concentration in the process.