166results about "Starter details" patented technology

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.

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.

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.

A compressor PTC starter belongs to the technical field of motor starting devices. It includes a housing and a housing cover; a thyristor (SCR) with its lower part disposed in the housing cavity and its upper part inserted into the housing cover cavity; a first PTC starting mechanism, a second PTC starting mechanism, and an S-connector disposed within the housing cavity. The first PTC starting mechanism includes a flat cylindrical first PTC, and the second PTC starting mechanism includes a cylindrical second PTC. The first and second PTC starting mechanisms are electrically connected to each other through the first PTC. The key feature is that the first PTC is horizontally positioned at the bottom of the housing cavity with its downward-facing side as a positioning support and its upward-facing side as an elastic clamp, and is subjected to contact pressure from the housing cover on the upward-facing side. The second PTC is longitudinally inserted into the housing cavity. Advantages: excellent stability; reduced steady-state power consumption for energy saving; improved operational reliability and service life; quick and convenient installation; no installation-related malfunctions.

The invention provides a motor operation management system, and the system comprises the steps: converting an AC power supply into a target DC power supply after a switching power supply is started, and inputting the target DC power supply into a control case, so as to supply power to the control case; when the target direct-current power supply exceeds a preset voltage upper limit value, the energy release module releases the target direct-current power supply output by the switching power supply; when the actual motion trail of the target motor exceeds a given error window, the control case cuts off power supply driving of the target motor through the driving output switch and connects the braking module to the target motor, so that a three-phase winding of the target motor is short-circuited, and the target motor is stopped through acting force which is generated by short circuit and is opposite to the motion direction of the motor. According to the invention, energy release is started when the output of the switching power supply exceeds the expectation, the disturbance of motor motion to the voltage of the switching power supply can be effectively reduced, and the motor can be efficiently and rapidly stopped by performing three-phase short circuit on the motor in the out-of-control state of the motor.

The invention relates to the technical field of motor control, and discloses an anti-locked-rotor starting control system. The system comprises a main control module, a dynamic rule base generation module, a phase compensation module, a pre-triggering module and a feedback correction module. The main control module monitors a three-phase current waveform and a rotor position signal of the motor and generates an instantaneous locked-rotor feature vector; the dynamic rule base generation module extracts a current waveform distortion mode of a historical locked-rotor event, and combines a rotor inertia parameter to construct a fuzzy rule set so as to initialize a dynamic rule base; the phase compensation module dynamically compensates the phase current waveform and constructs a stability evaluation function; the pre-triggering module triggers pre-access of the standby power supply according to the phase offset and verifies compatibility; and the feedback correction module generates a feedback parameter according to the locked-rotor risk index and the power supply verification result, and corrects the mapping relationship between the feature vector and the rule base. The system can accurately identify locked-rotor characteristics, dynamically adapt to operation parameters, actively prevent and control locked-rotor risks, and improve the starting stability of the motor.

The utility model discloses a soft starter with a voltage regulator self-inspection function, which performs static detection and trigger detection on a thyristor before being put into use, eliminates the existing potential problems of the thyristor before equipment is put into operation, and prevents the whole motor system from being influenced by faults of the soft starter in the operation process. Production interruption or power grid impact can be effectively prevented; and meanwhile, the detection core circuit is reused, and the state detection of a plurality of groups of anti-parallel thyristors can be realized only by arranging one set of detection circuit, so that the hardware cost of the soft starter is greatly reduced. According to the technical scheme, the soft starter with the self-checking function of the voltage regulator multiplexes the drive circuit through the channel selection switch, and realizes the self-checking function of the thyristor with industrial-grade reliability under the condition of limited hardware cost.

The invention relates to the field of signal processing, and particularly discloses a roller-based motor smooth driving method and device, a vehicle and a medium, and the method comprises the steps: in response to a detected roller rolling action, determining a current rolling signal type corresponding to the roller rolling action, and determining a historical rolling signal type output at a previous moment; by comparing the type of the current rolling signal with the type of the historical rolling signal, continuously outputting the current rolling signal in different duration until all duration ends or the rolling action of the roller is detected again; and controlling the driving voltage or the driving rotating speed of the motor to be increased from the initial value to the target value based on the output rolling signal within the duration. By comparing the current rolling signal type with the historical rolling signal type, the current rolling signal is output within different duration, and the initial rolling signal of the roller can be filtered, so that the insensitivity and pause of the roller adjusting process in the prior art are avoided.

This application provides a motor controller, a powertrain, and an electric vehicle, to resolve a problem of current impact on a power transistor that exists during startup of the motor controller and therefore improve powertrain efficiency and vehicle endurance. The motor controller provided in this application includes a control apparatus and an inverter circuit. The control apparatus is configured to receive a first torque signal, at least one second torque signal, and a third torque signal in sequence. In response to the third torque signal, the control apparatus outputs a startup signal and a third control signal in sequence. The startup signal is used to control the inverter circuit to generate a startup voltage, to avoid current impact that exists when the power transistor is turned on. The inverter circuit receives the third control signal and controls an induction motor to output a torque based on a torque value indicated by the third torque signal . According to the motor controller, the powertrain, and the electric vehicle provided in embodiments of this application, a startup speed of the motor controller can be increased, and current impact that exists during startup of the motor controller can be eliminated.

Embodiments of the present disclosure relate to soft turn-off for motor controllers. A bidirectional switch for an induction motor is described. The bidirectional switch can include a first power semiconductor transistor having a first source, a first drain, and a first gate. The bidirectional switch can also include a second power semiconductor transistor having a second source, a second drain, and a second gate. The bidirectional switch can include the second source connected to the first source. The bidirectional switch can include a soft start device including a control circuit configurable to provide a first control signal to the first power semiconductor transistor and a second control signal to the second power semiconductor transistor.

A method for controlling an induction motor and an electric power converter, the electric power converter (20) comprising means configured to receive an indication from a second electric power converter (30), the indication indicating that the second electric power converter (30) has stopped controlling an induction motor (60), means configured to determine an estimate of a rotating magnetic flux of the induction motor (60), wherein the determining is at least initiated in response to receiving the indication and means configured to start to control the induction motor (60) by the electric power converter (20) based on the determined estimate of the rotating magnetic flux of the induction motor (60).

The present application relates to the motor adjustment technical field, specifically for a kind of motor starting control adjustment method and system, in the present application, real-time acquisition motor operating parameter and estimate real-time load torque estimate value, immediately based on the estimate value synchronous execution dynamic starting voltage regulation and adaptive starting time optimization, voltage regulation is quickly determined optimum starting voltage by inquiring mapping relationship, ensure that output torque accurately matches load demand;Time optimization is then according to the instantaneous change rate of real-time load torque estimate value dynamically adjusts starting duration, to adapt to different working conditions;Finally, combined with the change trend of real-time load torque estimate value generates comprehensive control instruction, so that voltage and time parameter cooperate, jointly realize the beneficial effect that starting process is smooth, energy efficiency is promoted and reliability is enhanced.

The invention provides a gardening tool power-on detection method which comprises the following steps: after a gardening tool is inserted into a battery pack and a switch is pressed down, detecting a level signal of an input end of a control unit, if the level signal is a low level signal, judging that the switch is closed and the gardening tool is successfully powered on, so that whether the switch of the gardening tool is successfully closed or not can be accurately detected; whether the gardening tool is powered on successfully or not is judged, an additional circuit does not need to be arranged, the detection precision is high, the cost is low, the working state of the gardening tool can be detected in real time while the switch operates well, the working efficiency of the gardening tool is improved, the requirements of a user are met, and the use experience feeling of the user is improved.

The present invention refers to a starting method with two-levels modified and discrete fixed-time or fixed-frequency hysteresis current controller, under high load conditions, of a BLDC motor (10) with trapezoidal-shaped induced voltages, wherein the BLDC motor (10) is driven by an inverter bridge (30) with only one current sensor (20) positioned in the busbar, controlled by means of a processing unit associated to an analog-digital converter, wherein the novelty basically comprises the fact that: the intensity of the BLDC motor current (Im) is controlled by means of the two-levels and discrete fixed-time or fixed-frequency hysteresis current controller.

Disclosed are a method for controlling an induction motor, a device, an equipment and a storage medium. The method includes: determining an optimal starting frequency by acquiring initial equivalent circuit parameters of the induction motor at zero speed, and determining a starting voltage by a preset starting current, so as to enable the induction motor to enter a starting operation phase; then determining that the induction motor switches from the starting operation phase to the steady operation phase when it is determined that the motor starting speed of the induction motor in the starting operation phase is accelerated to be consistent with a preset steady operation speed; and using the optimal frequency with the updated equivalent parameters identified with the operation current and voltage values, and adjusting the drive voltage to maintain the motor speed to the required one.

A device for the regulation of devices which can be regulated with a 0-10 Vdc and / or PWM command is herein disclosed, the device having at least one power supply input, at least one regulation input adapted to receive external regulation signals, a potentiometer comprising a selector element, the potentiometer being configured to provide a manual voltage regulation, and at least one command output configured to output a command signal towards the devices to be regulated. The device further comprises a switching element configured to cause a switching of said device between a first regulation mode, in which the command signal is generated by said device and is manually adjustable through the selector element of said potentiometer, and a second regulation mode, which allows a regulation of the devices to be regulated via the command signal from the command output based on an external device connectable to the regulation input. A system comprising the above device is also disclosed.

The invention discloses an electronic power soft starter, and relates to the technical field of power equipment soft start, the electronic power soft starter comprises a silicon controlled rectifier heat dissipation system, a silicon controlled rectifier trigger system and a soft start control system, the silicon controlled rectifier heat dissipation system adopts a double heat dissipation mode of oil immersion and water cooling, and three-phase six silicon controlled rectifier elements are immersed in insulating oil; the bottom of the oil box is placed in the water box; according to the silicon controlled rectifier trigger system, two silicon controlled rectifiers in each phase are connected in anti-parallel and are connected with relay coils through buttons, and contacts of relays are connected with control electrodes of the silicon controlled rectifiers. According to the electronic type electric power soft starter, a contactless spark design is adopted, sparks generated by a traditional mechanical contact type starter are effectively avoided, and the safety production level is improved; and meanwhile, the short-circuit instantaneous breaking protection circuit breaker is adopted, so that the safety protection performance of the equipment is further enhanced. The heat dissipation mode is innovative, oil immersion and water cooling are combined, the heat dissipation cost is reduced, and hot water can be recycled.

The utility model provides a pan-tilt driving motor starting capacitor board. The pan-tilt driving motor starting capacitor board comprises a switch interface module, an arc extinguishing module, a starting capacitor module and a network and power supply transmission interface module which are integrally configured on a circuit board, the arc extinguishing module is respectively connected with a motor limit switch of a holder driving motor, the camera device and the starting capacitor module through the switch interface module, and the network and power supply transmission interface module is configured to supply power to the camera device by external voltage and input network signals; in response to an electric energy signal sent to the pan-tilt driving motor by the camera device, the pan-tilt driving motor is controlled to act through the arc extinguishing module and the starting capacitor module; and in response to the moment that the contact of the trigger generator limit switch is disconnected, the arc extinguishing module absorbs transient voltage generated at the moment that the contact is disconnected so as to control the pan-tilt driving motor to stop acting. According to the application, the electric arc and sparking conditions generated by the position of the contact point in the limit switch during action in an alternating current power supply environment can be effectively inhibited, the contact point is effectively protected, the reliability is improved, the problem of control failure of the pan-tilt is avoided, and long-term stable operation of the pan-tilt is ensured.

The utility model relates to the field of automatic control, and particularly discloses a motor soft starting device suitable for pump loads, which comprises a main circuit breaker module, a three-phase antiparallel thyristor module, a current detection module, a bypass contactor module, a thermal overload relay module and a user interface module. The main circuit breaker module is used for controlling start and stop of a motor and generating a control signal according to a preset start parameter; the three-phase antiparallel thyristor module is used for smoothly adjusting voltage applied to a motor stator winding; the bypass contactor module comprises one or more contacts to ensure that current passes through the thyristor assembly in the soft starter; the current detection module monitors the working current of the motor in real time and feeds back the detected current value to the main circuit breaker module; the thermal overload relay module is used for preventing the motor from being damaged due to long-time overload operation; the user interface module is used for setting soft start parameters and displaying the running state of the motor.

The invention discloses a high-voltage motor starting limiting and fault locking protection circuit which comprises a control bus, a high-voltage vacuum circuit breaker, an operation column, a motor comprehensive protection device and a combined relay KTA. The combined relay KTA is composed of a power-off delay relay and an intermediate relay, and pins 1 and 2 of the combined relay KTA are connected in series with a normally open auxiliary contact of the high-voltage vacuum circuit breaker and then connected between the positive electrode and the negative electrode of the control bus; a pin 3 is connected with a pin 5, and a pin 4 is connected with an external protection interlocking action inlet of the motor comprehensive protection device; a pin 5 is connected with a common point of a tripping outlet of the motor comprehensive protection device and an opening button of the operation column, and a pin 6 is connected with a negative electrode of the direct current control bus; the pin 7 is connected in series into a closing loop, and the pin 8 is connected with the front end of a closing coil of the high-voltage vacuum circuit breaker. Wiring is simple, and operation is convenient.

The utility model discloses an asymmetric cooperative control three-phase balance motor soft starter, comprising a three-phase AC power supply input end, a power adjusting unit, an output end connected to a three-phase asynchronous motor, and a main controller which are connected in sequence. The power adjusting unit comprises an A-phase control module which is internally provided with a first thyristor at least controlled by a main controller; the B-phase control module is internally provided with a pair of antiparallel second thyristors controlled by the main controller; and the C-phase control module is internally provided with a pair of third thyristors which are controlled by the main controller and are reversely connected in parallel. The main controller cooperatively controls the conduction angles of the first thyristor, the second thyristor pair and the third thyristor pair in the starting process of the motor by outputting a control signal so as to adjust the voltage applied to the motor and improve the balance of the three-phase output voltage. According to the utility model, the three phases are controlled, so that the three-phase balance during starting is effectively improved, and the vibration and noise of the motor are reduced.

The invention relates to a method for operating a three-phase motor (4) on a multi-phase power grid (5) by means of a soft starter (1), with which one or more phases (a, b, c) of the power grid (5) can be switched by means of a triggering of thyristors (2). In this case, in addition to grid-related triggering criteria, rotor flux-related triggering criteria are also taken into account.

The application provides a hydraulic motor control circuit, which comprises a hydraulic motor, an engine generator and a battery power supply group, and further comprises a first relay, a second relay and a contactor; the contact of the contactor is attracted or disconnected to control the start or stop of the hydraulic motor; the contact of the second relay is attracted or disconnected to control the contact of the contactor; the contact of the first relay is attracted or disconnected to control the contact of the second relay; when the engine generator is not working, the contact of the first relay is attracted under the action of the battery power supply group, the contact of the second relay is disconnected, the contact of the contactor is disconnected, and the hydraulic motor cannot work; when the engine generator is working, the first relay opens the overvoltage protection, the contact of the first relay is disconnected, the contact of the second relay is attracted, the contact of the contactor is attracted, and the hydraulic motor is powered and starts to work. The application can ensure that the hydraulic motor does not excessively consume the battery power.

The invention provides a motor starting control method and system based on a strong drag curve, and a terminal. The method comprises the following steps: firstly, accurately capturing an initial electrical angle and a flow count value of a current carrier period; and then, accurately obtaining a corresponding angular velocity value according to the flow count value based on a pre-designed strong drag curve. And in combination with the angular velocity and the initial electrical angle, updating the current electrical angle in real time. And based on the updated electrical angle, precisely implementing motor starting current control, synchronously updating a process count value, taking the two as initial parameters of a next carrier period, and starting a new round of control process until a preset total time length of a strong drag curve is reached. According to the method, the designed strong drag curve is innovatively introduced to directly obtain the angular velocity value, and the dependence on the MCU computing power is greatly reduced on the premise that high robustness and high-precision starting are guaranteed. Meanwhile, by means of an intelligent parameter self-tuning mechanism, different working conditions can be rapidly adapted, the contradiction between the high computing power requirement and low resource occupation is effectively solved, and the starting efficiency and reliability of the unmanned aerial vehicle power system in the changeable environment are remarkably improved.

The application relates to the technical field of industrial automation control, and proposes a control method, device, equipment and medium of a high-voltage frequency converter. The method comprises the following steps: receiving a ready instruction sent by a first control end, collecting real-time state signals of multiple associated components in the high-voltage frequency converter in parallel according to the ready instruction; performing logical judgment on the real-time state signals of each associated component and preset respective corresponding ready conditions; determining to enter a ready waiting state only when the real-time state signals of all the associated components all satisfy the corresponding ready conditions; after determining to enter the ready waiting state, keeping each associated component working and collecting the running state of each associated component in real time, generating and outputting a ready waiting signal to a second control end; receiving a start instruction returned by the second control end according to the ready waiting signal, and performing corresponding start operation according to the start instruction. Through the technical scheme, the control of safe and rapid start is realized.

The invention discloses an anti-interference electricity controller of a pumping unit, and relates to the technical field of electrical control, and the anti-interference electricity controller comprises a data acquisition module which is used for acquiring the motor type, the load, the interference electricity duration and the interference electricity frequency; the dynamic delay calculation module is used for calculating recovery delay through a dynamic self-adaptive algorithm according to the collected information; and a hierarchical recovery control module. Through the control logic of low-frequency starting and stepped frequency rising, the motor can be gradually transited to the rated rotating speed from the lower rotating speed, the current impact at the starting moment is effectively reduced, core equipment such as the motor and a frequency converter is protected against damage, the instantaneous load pressure on a power grid is also reduced, and the stability of the voltage of the power grid is favorably maintained. The staged recovery mode is combined with precise delay control provided by a dynamic adaptive algorithm to form a double guarantee mechanism of delay adaptation and stable starting, and the safety and reliability of anti-interference electricity control are improved.

The utility model relates to electrical control technical field discloses a kind of reversible belt soft-start circuit. Including power supply, the coil end of based on forward contactor constitutes forward control circuit, the coil end of based on reverse contactor constitutes reverse control circuit, soft-start device and motor, still include forward time-delay relay and reverse time-delay relay, the coil end of forward time-delay relay is parallel with the coil end of forward contactor in forward control circuit, the coil end of reverse time-delay relay is parallel with the coil end of reverse contactor, the positive pole of power supply is connected with the negative pole of power supply through the parallel circuit of forward control circuit and reverse control circuit, the positive pole of power supply is connected with motor through soft-start device, the auxiliary contact of forward time-delay relay and the auxiliary contact of reverse time-delay relay are connected with the signal end of soft-start transposition. The abnormality of existing contactor has solved the problem of unable to start and interlock failure.

A power tool is provided including a housing; an electric motor disposed within the housing; a main trigger switch mounted on the housing; a side handle mounted on the housing, the side handle having an auxiliary trigger; and a controller disposed within the housing operable to control a flow of electric current from a power source to the electric motor. The controller activates the motor only if the main trigger and the auxiliary trigger are both actuated. If the one of the triggers is released while the other trigger is still engaged, the controller is configured to continue operating the motor only if the released trigger is reengaged within a time threshold, but otherwise discontinue operating the motor until both the main trigger and the auxiliary triggers are released and reengaged.

A motor driver for setting duty cycles based on a temperature is provided. The motor driver senses a temperature of an environment around a motor. The motor driver sets a duty cycle modulation value according to the sensed temperature, and modulates a preset duty cycle to form a startup duty cycle according to the duty cycle modulation value. The motor driver sets or modulates duty cycles of one or more waveforms of a startup signal to be equal to the startup duty cycle. The motor driver outputs the startup signal to the motor.