604results about "Starter details" patented technology

An electronic starting switch assembly and control methods for a dryer having a split-phase induction motor. The assembly comprises a microcontroller unit (MCU) configured to execute a control method that dynamically manages the motor's operation by monitoring the forward magnitude current. The MCU determines a stabilized startup forward magnitude current and calculates a crossover condition, allowing for precise control of the motor's transition to single-phase operation by disconnecting the auxiliary winding and connecting the heater element based on real-time forward magnitude current analysis and processing. The system can also monitor for overload conditions indicative of rotor speed drops and can re-engage the auxiliary winding to maintain motor performance. The assembly includes a housing with a heat-sink for efficient thermal management and environmental protection of electronic components. The disclosed method provides a robust solution for efficient dryer operation by ensuring accurate control of motor start-up, running conditions, and overload protection.

The invention relates to the technical field of self-adaptive starting, and discloses a self-adaptive starting method and system based on voltage and current monitoring, and the method comprises the steps that an MCU (Microprogrammed Control Unit) triggers an auxiliary silicon controlled rectifier and a main silicon controlled rectifier through preset starting logic to start a motor, and carries out the high-frequency sampling of current and voltage data in real time; once starting failure is detected, short-time voltage sequences and short-time current sequences before and after a failure occurrence point can be automatically captured and stored. Then, key features are extracted from the sequences, and failure causes are determined through decision tree model analysis. And based on the analysis result and the current retry times, the MCU outputs a corresponding retry strategy to ensure that the motor can be successfully started or enter a safety mode. Thus, the reliability of motor starting is improved, subsequent fault diagnosis is supported through detailed data recording, and the maintainability and safety of the system are greatly improved.

The invention belongs to the field of integrated circuits, and relates to an internal soft start circuit which comprises an integral amplification circuit and a ring oscillator circuit. The integral amplification circuit comprises four NMOS (N-channel metal oxide semiconductor) tubes M1 to M4, two capacitors C2 to C3 and an amplifier; grid electrodes of the M1 and the M3 are connected to a clock signal first output end of the ring oscillator circuit, a source electrode of the M1 is connected with the ring oscillator circuit, and a drain electrode of the M1 is respectively connected with a drain electrode of the M2 and a positive electrode of the C2; grid electrodes of the M2 and the M4 are connected to a second clock signal output end of the ring oscillator circuit, and a source electrode of the M2 is grounded; the negative electrode of the C2 is respectively connected with the drain electrode of the M3 and the source electrode of the M4; the source electrode of the M3 is grounded; the drain electrode of the M4 is respectively connected to the negative electrode input end of the amplifier and the positive electrode of the C3; the anode input end of the amplifier is grounded, and the output end C3 of the amplifier is connected with the cathode and serves as the output end of the integral amplification circuit; the soft start time is greatly prolonged under the condition that the charging current is not excessively reduced.

The invention provides a high-voltage power supply and distribution system for an electric vertical take-off and landing aircraft, and belongs to the technical field of power supply and distribution regulation control systems, and the system comprises a main bus bar module which is used for the current collection and distribution of an energy storage battery and a ground DC bus high-voltage power supply, and is provided with a fuse for overload cut-off; the output bus bar module comprises six mutually-independent motor load output channels and two mutually-independent high-voltage output channels, and each motor load output channel supplies power to the two symmetrically-arranged motors at the same time and is used for distributing 12 motor loads and 2 high-voltage output loads; the power-on buffer module is used for power-on buffer of 12 paths of motor loads and restraining power-on impact current; the self-locking control module has a motor load output control self-locking function, and can keep normal output of motor load current under the condition that the monitoring unit fails; and the monitoring unit module is used for monitoring the input voltage, the output voltage and the load current, and performing power-on buffer control and high-voltage contactor self-locking control on the motor load.

The invention relates to the technical field of motor current limiting, and discloses a cooling fan motor starting current limiting method, device and equipment, and the method comprises the steps: carrying out the starting power calculation of a radiator, and obtaining a drive power prediction value; rotor angle position detection and blade aerodynamic resistance calculation are carried out, and aerodynamic load distribution parameters of all phase change points are obtained; performing starting current limitation to obtain a current limitation control instruction; performing motor commutation time sequence control to obtain a basic commutation control signal, and meanwhile, monitoring a starting torque abnormal increment to obtain a reverse airflow recognition result; according to the method, the current limit value is increased in the emergency mode to accelerate the starting response, the current limit is reduced in the energy-saving mode to reduce the energy consumption, and the starting current phase difference compensation is carried out to obtain a reverse airflow compensation control parameter and fuse the reverse airflow compensation control parameter with the basic phase-change control signal to obtain a target phase-change control signal. And the intelligent balance between the starting performance and the energy efficiency is realized.

A system for providing inrush current limiting for induction motor starting. The system utilizes a pre-start controller to initialize operation of a controller including multiple switches for controlling the voltage delivered to a motor having multiple phases. The pre-start controller activates each switch and determines whether a phase current flowing through the switches satisfies a threshold current. The switches are deactivated a phase current satisfies the threshold current. The pre-start controller determines an activation order for each phase and orders phases having higher phase currents higher in the order than lower phase currents, and determines an activation timing. Based on whether the highest phase current is positive or negative, the pre-start controller then activates, using a voltage at a corresponding angle and based on the activation order and activation timing, the phases to de-saturate the flux generated by the phase currents, thereby limiting an inrush current provided to the motor.

The utility model relates to a high-voltage soft start cabinet. The technical problem to be solved by the utility model is to provide a high-voltage soft start cabinet. The technical solution adopted by the utility model: including a start cabinet bottom plate, a start cabinet side plate, a wiring cover plate and a start cabinet door, the start cabinet bottom plate includes a bottom plate body and a bottom plate main docking part, the ends of the bottom plate main docking part extend vertically downward to form a bottom plate front part and a bottom plate side part respectively, the bottom plate front part is vertically bent inward to form a bottom plate reinforcement part, the bottom plate front part and the bottom plate reinforcement part are provided with a bottom plate docking interface, and the bottom plate main docking part is provided with a bottom plate first fixing hole at the bottom plate docking interface. The advantages of the utility model are: the bottom of the side plate, the raised plate inside the side plate and the wiring cover plate form a hidden wiring channel, which can bring together the circuits of the components in the soft start cabinet and lead them out through the main inlet and outlet holes, making the wiring more reasonable and concealed, and the internal layout more beautiful; the wiring channel is formed by integral bending, with fewer parts and easy processing.

The invention provides a motor control method and a vehicle, and relates to the technical field of motor control. According to the method, a current Hall signal of a Hall sensor is obtained, and whether the Hall sensor is in a fault state is determined; if the Hall sensor is not in the fault state, whether the motor is controlled to work based on the current Hall signal is determined according to first system time corresponding to the current Hall signal and the signal state of the current Hall signal; if the Hall sensor is in the fault state, updating the Hall signal invalid count value, and determining whether to control the control system of the motor to restart or not based on the updated Hall signal invalid count value and the first preset threshold value, thereby avoiding the problems of control errors and frequent error protection.

The present invention relates to the field of control cabinet technology, specifically, a high-voltage solid-state soft-start control cabinet that is easy to maintain, including a cabinet body, one end of which is open, and also includes: a partition horizontally arranged in the cabinet body; a fixed shaft installed at the open end of the cabinet body, the partition is rotatably connected to the fixed shaft; and a notch, which is opened on a side end of the cabinet body to allow the partition to pass through; the partition is driven by an external force to rotate out toward the opening direction of the cabinet body. The present invention can rotate the partition connected to the electronic components above it directly toward the open end of the cabinet body through the setting of the fixed shaft and the notch, which provides a better field of view for inspection and is more conducive to inspection and maintenance; and when the partition is rotated out, it can be rotated out at least degrees, so that the original back of the partition is rotated to the side, eliminating the inspection blind spot.

The invention discloses an intelligent start-stop control method and system for a magnetic suspension refrigeration compressor, and the method comprises the steps: obtaining a position perception enhancement source through collecting and analyzing the current response data of a magnetic bearing coil, and extracting the current response change characteristics; rotor position estimation is carried out based on current response change characteristics, a positioning precision driving source is extracted from estimation deviation, and a non-impact starting excitation current instruction is generated; a multi-sensor fusion data network is established, configuration is reconstructed through an abnormal response activation signal, and a degradation operation fault-tolerant mode is formed; converting a response preparation gain according to the shutdown instruction signal, performing shutdown state evaluation in combination with signal reconstruction configuration, and generating an emergency shutdown trigger condition; and the power supply state of a bus capacitor is detected, gradient control potential is released, the active damping control opportunity is determined, a damping force control instruction is generated, finally intelligent start-stop control over the magnetic suspension refrigeration compressor is achieved, and safe and reliable operation of the system under various working conditions is ensured.

A plateau type high-voltage removable soft start cabinet easy to dissipate heat comprises a cabinet body and functional chambers, the interior of the cabinet body is divided into a secondary instrument chamber, a handcart chamber, a main bus chamber, a cable chamber, a soft start chamber, a small bus chamber, an air cooling heat dissipation assembly, a front cabinet door, a rear cabinet door, a cabinet top pressure relief plate, a header and a hanging ring, and in addition, a secondary component and related accessories are further installed in the cabinet. The intelligent protection measurement and control device realizes protection and measurement functions of soft start, operation and soft stop of the high-voltage motor and remote communication, and the soft start intelligent control device mainly realizes intelligent control and monitoring of the vacuum circuit breaker, the bypass switch and the dry-type voltage-regulating soft starter. When the air cooling heat dissipation assembly is combined with the soft start intelligent control device for use, forced air convection can be intelligently generated between air in the main bus chamber, the cable chamber, the handcart chamber and the soft start chamber and outside air, so that the heat dissipation effect of the main bus chamber, the cable chamber, the handcart chamber and the soft start chamber is improved; therefore, the condensation phenomenon in each functional chamber of the cabinet body is effectively prevented.

A method and system for operating a hybrid propulsion system, includes controllably providing a first power to a first bus and a first inverter, electrically coupling a first motor with a second inverter by way of a second bus, operably converting, by the second inverter, the first power received by the first inverter to a starting power adapted for starting the first motor, and increasing, by the second inverter, the starting power to match the first power received.

The invention belongs to the technical field of soft starter control, and particularly provides a soft starter control method and system based on dynamic threshold correction and current change prediction, and the method comprises the steps: data collection: collecting the collected data, including the environment temperature, the input current collection and the operation duration of a soft starter; data cleaning and preprocessing; establishing a temperature-time-current threshold correction relation; a soft starter state classification model is constructed based on the long-short-term memory network and used for perfecting the temperature-time-current threshold correction relation constructed in the third step and outputting the soft starter state; soft starter state classification model training optimization and evaluation; and using the trained soft starter state classification model to carry out soft starter operation state discrimination. The method and the system are combined with multi-dimensional data such as temperature and time, a current protection threshold is dynamically adjusted, and the problem that a traditional static constant value is poor in adaptability is solved.

Techniques control a utility vehicle. Such techniques involve storing electric power in a lithium battery of the utility vehicle. Such techniques further involve operating a motor controller of the utility vehicle in a normal mode in which the motor controller provides electric power from a lithium battery of the utility vehicle to an electric motor of the utility vehicle to turn one or more ground engaging members of the utility vehicle. Such techniques further involve, after operating the motor controller in the normal operating mode, operating the motor controller in a walkaway mode in which the motor controller configures the electric motor to provide braking torque.

A method and system for operating a hybrid propulsion system, includes controllably providing a first power to a first bus and a first inverter, electrically coupling a first motor with a second inverter by way of a second bus, operably converting, by the second inverter, the first power received by the first inverter to a starting power adapted for starting the first motor, and increasing, by the second inverter, the starting power to match the first power received.

The invention relates to the technical field of motor driving control, and discloses a motor driving method with low delay response. The method comprises the steps of collecting real-time operation parameters such as motor speed data, position data and current data, determining a low-delay control model based on the parameters, generating a dynamic adjustment instruction by using the model and applying the dynamic adjustment instruction to a motor driving system, and executing feedback calibration operation according to motor response data so as to update the model. Parameters are collected in real time, and an adaptive control model is constructed, so that a control instruction can be changed along with the running state of the motor, and the lag of an intermediate link is reduced; the dynamic adjustment instruction directly acts on the driving system, and the response speed is increased; the feedback calibration criterion compensates performance drift through continuously optimizing the model, and ensures that the motor keeps stable dynamic performance under different working conditions. The method can enhance the response capability of the motor in the scenes of load sudden change, speed switching and the like, improve the synchronism of multi-motor cooperation, reduce mechanical wear, and is suitable for various motor types and application scenes.

The invention discloses a high-voltage solid-state soft start device carrying a self-adaptive adjusting electrode structure, and relates to the technical field of high-voltage solid-state soft start, the high-voltage solid-state soft start device comprises a cabinet body and a decontamination assembly, the center of the interior of the cabinet body is fixedly provided with a middle partition plate, the lower end of the cabinet body is provided with a thyristor group, and the top of the thyristor group is connected with a first contact electrode; a guide frame is slidably connected to the middle of the middle partition plate, a second contact electrode is arranged at the bottom of the guide frame, and the decontamination assembly is arranged in the middle of the cabinet body. When a first contact electrode and a second contact electrode work for a long time and contact resistance is increased due to oxidation of contact surfaces, a motor drives a reciprocating lead screw to rotate through a driving shaft, a driving gear, a driven gear and a one-way bearing, so that a moving seat can move horizontally; and in the process, the guide plate is in contact with the sliding column, so that the height of the guide frame is automatically adjusted.

A control circuit of a timepiece motor (2), including a bipolar permanent magnet (6), a stator (4) defining two isthmi (12a &12b) and two rest positions for the rotor, and a coil (18) mounted on the stator. The control circuit can determine the position of the rotor at rest. An electric pulse generator (22) for detecting an external magnetic field formed by a circuits for: measuring the electrical current in the coil after an electrical pulse has been triggered, comparing the measured electrical current with a reference current, measuring the time allowing measuring a rise time between triggering of the electrical pulse and the next time the electrical current flowing in the coil reaches the reference current, and processing the rise time to be able to determine whether the measured rise time indicates the presence of a given external magnetic field passing through the two isthmi.

According to one aspect of an exemplary embodiment of the disclosure, an imaging device or system (10) includes at least one motor (130) controlled by a motor drive. The motor (130) is selected from one of multiple motors (130) operable by the motor drive. A motor controller (120) is operative to output a modulated voltage to the motor (130), where the modulated voltage does not cause rotation of the motor (130). As the motor controller (120) outputs the modulate voltage, either the resultant voltage or the resultant current through the motor (130) is measured. The motor controller (120) uses the measured voltage or current to identify which of the multiple motors (130) is connected to the motor controller (120) and set at least one parameter in the motor controller (120) corresponding to the identified motor (130).

The combined structure of the current type starter and the protector comprises the current type starter and the protector, the current type starter is provided with an S pin and an M pin, the protector is provided with a protector pin, and the combined structure is characterized by further comprising an integrated installation mechanism which comprises a protector pin supporting seat and a protector pin locking cover, the protector pin supporting seat is located on the upward side of a current type starter cover plate of the current type starter and corresponds to the upper portion of the S pin and the upper portion of the M pin across the current type starter cover plate, and the protector pin is supported on the protector pin supporting seat and corresponds to the upper portion between the S pin and the M pin. And the protector pin locking cover is matched with the protector pin supporting seat in an inserting and embedding manner at a position corresponding to the upper part of the protector pin so as to lock the protector pin on the protector pin supporting seat. The method has the advantages that volume increase and obvious cost increase are avoided; assembly process links are reduced, and assembly efficiency is improved; and the reliability and the safety of the three-line column assembled on the refrigeration compressor are ensured.

According to the rotor starting control method of the magnetic drive conveying system and the related equipment, the magnetic drive conveying system comprises a magnetic drive conveying track and rotors, the rotors run on the magnetic drive conveying track, and the method comprises the steps that starting requests for at least two starting rotors in the multiple rotors are responded; starting control is conducted on the front-sequence rotor, real-time state information in the magnetic drive conveying system after the front-sequence rotor is started is obtained, the front-sequence rotor is one of the at least two starting rotors, and the real-time state information is used for representing electrical parameters of a power load in the magnetic drive conveying system; based on the real-time state information, an asynchronous control strategy of a subsequent rotor is generated, and the subsequent rotor is a starting rotor after the previous rotor; on the basis of an asynchronous control strategy, starting control is carried out on a subsequent rotor, the situations that the rotor fails to start due to insufficient torque, a control system operates mistakenly due to unstable voltage, and equipment is shut down due to overload protection are prevented, and the operation safety of the magnetic drive conveying system is remarkably improved.

The present disclosure provides a soft start system and method for use with an electric motor. Such system may include, a parameter circuit configured to measure parameters of the electric motor, a series of capacitors, and a startup circuit operatively connected to the parameter circuit and the series of capacitors, wherein, the parameter circuit is configured to measure parameters of the electric motor during trial startup operations and determine a startup acceleration ramp based on the measured parameters, and wherein, the startup circuit is configured to activate and deactivate specific capacitors from the series of capacitors during subsequent startup operations.

A power tool is provided including a housing, an electric motor, a main trigger switch, a side handle having an auxiliary trigger, and a controller operable to control a flow of electric current from a power source to the electric motor. In an embodiment, the controller the motor at start-up only if the main trigger is actuated within a time threshold after the auxiliary trigger is actuated, and otherwise prevent motor operation until both the main trigger and the auxiliary triggers are released and reengaged. In an embodiment, the controller applies a regenerative brake to stop an operation of the electric motor if one of the main trigger or the auxiliary trigger is released while the electric motor is in operation.

The combined structure of the current type starter and the protector comprises the current type starter and the protector, the current type starter is provided with an S pin and an M pin, the protector is provided with a protector pin, and the combined structure is characterized by further comprising an integrated installation mechanism which comprises a protector pin supporting seat and a protector pin locking cover, the protector pin supporting seat is located on the upward side of a current type starter cover plate of the current type starter and corresponds to the upper portion of the S pin and the upper portion of the M pin across the current type starter cover plate, and the protector pin is supported on the protector pin supporting seat and corresponds to the upper portion between the S pin and the M pin. And the protector pin locking cover is matched with the protector pin supporting seat in an inserting and embedding manner at a position corresponding to the upper part of the protector pin so as to lock the protector pin on the protector pin supporting seat. The method has the advantages that volume increase and obvious cost increase are avoided; assembly process links are reduced, and assembly efficiency is improved; and the reliability and the safety of the three-line column assembled on the refrigeration compressor are ensured.

The invention relates to a double-fed asynchronous motor debugging method and system based on a back-to-back converter, and belongs to the technical field of motor control. Comprising the following steps: supplying power to a three-phase alternating-current voltage regulator, and charging a direct-current bus capacitor by connecting a grid-side alternating-current contactor with a buffer resistor in parallel; when the DC bus capacitor is charged to a preset amplitude, the digital signal processor sends a closing signal to the AC contactor; after the alternating current contactor is switched on, pure open-loop debugging, current closed-loop debugging and rotating speed closed-loop debugging are respectively carried out on the rotor side; the upper computer controls the pulse width modulator to work, carries out excitation on the rotor, and monitors the voltage and phase of the stator end; when the voltage rises to a preset value and the phase is synchronized with the power grid, a closing signal is sent to the AC contactor at the stator side, and the motor stator is connected to the power grid. The problems that a traditional doubly-fed asynchronous motor is too large in starting current and complex in control link decoupling are solved, and the debugging reliability and efficiency are improved. In addition, debugging does not depend on additional prime mover dragging.

Embodiments of the present application disclose an intelligent electric power tool and a control method thereof. The intelligent electric power tool comprises: a motor; a power switch, which outputs a switch signal to control the power-on state of the motor; a detection unit, which is configured to detect the running parameters of the motor in real time; and a controller, which is electrically connected to at least the motor and the detection unit. The controller is configured to: when a power-off signal of the power switch is detected, acquire the running parameters of the motor; set the brake time of the intelligent electric power tool according to the running parameters, and control the motor to reduce the rotating speed within the brake time in response to the power-off signal. The intelligent electric power tool can solve the problems of the prior art, such as long brake time, slow start response speed and poor brake stability in the process of frequent on-off, so that the brake time of the intelligent electric power tool is automatically adjusted according to the real-time running parameters of the motor during the working process, the fast start is realized while the brake stability is ensured, the response speed of the intelligent electric power tool in the process of frequent on-off is improved, and the working efficiency is improved.

A method for controlling a direct drive transmission system and related devices. The method includes: S1: starting direct drive transmission system for overall zero returning; S2: reading a zero signal of the first incremental position feedback means identified by a corresponding second incremental position feedback means; S3: determining whether any actuator reads two zero signals; if yes, performing step S4; otherwise, returning to step S1; S4: determining according to a distance between two zero signals fed back by the actuator that the corresponding mover has completed zero returning, and further completing zero returning of the direct drive transmission system; and S5: acquiring, by the controller based on the direct drive transmission system after zero returning, position information of the movers, and driving the movers to move. Compared with the related art, the present disclosure has good position feedback effect, high positioning accuracy, and good drive control effect.

The utility model discloses a control system for soft start of a motor in the papermaking industry, which comprises a soft starter RQ, a terminal 7 and a terminal 10 of the soft starter RQ are in short circuit, a terminal 8 and a terminal 9 of the soft starter RQ are in short circuit, the terminal 8 and the terminal 9 of the soft starter RQ are both connected with one end of a normally open contact of a relay KA, and the other end of the normally open contact of the relay KA is connected with the terminal 7 and the terminal 10; and the terminals L11, L12 and L13 of the soft starter RQ are connected with one end of a contact of a contactor 2KM, and the other end of the contact of the contactor 2KM is connected with a motor M. The soft starter has the following advantages that the motor can continuously operate under the condition that the soft starter misreports a fault, and after the fault is misreported, the motor can still continuously operate and has circuit break protection, so that the condition that components are damaged cannot occur.

The inverter device includes a switching circuit connected to a motor having a plurality of phase windings and a controller configured to control the switching circuit. The switching circuit includes a plurality of series circuits of switch elements which are upstream and downstream along the direction of application of DC voltage, and each phase winding is connected to the mutual connection point of each switch element of these series circuits. The controller determines abnormality of each switch element according to a state of the current flowing between the switching circuit and the motor while sequentially switching a plurality of current paths through each switch element to the predetermined direction of each phase winding, and before switching each current path, a reverse phase voltage for counteracting the current flowing between the switching circuit and the motor is applied to each phase winding through each of the switch elements.