38results about How to "Improve power factor" patented technology

The invention discloses a multi-standard power supply system and method for a locomotive test, and relates to the technical field of test power supplies, and the structural design of the system is as follows: an input power supply is a three-phase alternating current 10kV power supply; the high-voltage switch K realizes access control and isolation of the system and a public power grid, the connection reactor L realizes energy buffering and inhibits switch ripples in output current, and the soft charging circuit pre-charges the three-stage converter. The three-level converter converts three-phase alternating current 10kV into DC1500 / 750V and outputs the DC1500 / 750V to the direct-current bus, one path of the direct-current bus supplies power to a subway vehicle test line, and the other path of the direct-current bus is inverted into single-phase alternating current 25kV through the output inverter and supplies power to a railway locomotive test line. According to the invention, alternating current test conditions of railway electric traction locomotive vehicles and direct current test conditions of subway vehicles can be satisfied, reliability and quality of power supply are ensured, repeated construction is reduced, and resource waste is avoided.

This invention discloses a phase-shifted full-bridge plasma power supply based on all SiC devices, belonging to the field of special power supply technology. It includes: a rectifier unit with a power factor correction circuit; an inverter unit containing a phase-shifted full-bridge topology composed of SiC power devices and an energy storage inductor, achieving zero-voltage switching through phase-shift control; a transformer unit; an output unit including an output filter capacitor; and a control unit that uses an incremental PID algorithm to generate phase-shift control signals. This invention analyzes the differences in zero-voltage switching between the leading and lagging bridge arms, utilizes the low output capacitance characteristics and dynamic dead-time adjustment of SiC devices, broadens the soft-switching range under light loads, effectively reduces output current ripple, and improves dynamic response speed and overall efficiency.

The utility model is suitable for the technical field of electronic circuits, and provides a dimming circuit of a multi-section light emitting diode and lighting equipment, the circuit comprises a power supply output circuit, a whole-section light emitting diode LED, an LED dimming circuit and an LED constant-current driving circuit, the power supply output circuit is connected with the whole-section LED comprising a plurality of sub-section LEDs and used for providing power for the whole-section LED, and the LED dimming circuit is connected with the LED constant-current driving circuit. Outputting a line network voltage value; the LED dimming circuit is respectively connected with the power supply output circuit and the whole section of LED and is used for sampling the network voltage value and the whole section of voltage difference value of the whole section of LED and respectively outputting a silicon controlled rectifier control signal value and a dimming voltage value; and the LED constant-current driving circuit is respectively connected with the LED dimming circuit, each sub-segment LED and the power supply output circuit, and is used for providing constant current for each sub-segment LED according to the dimming voltage value and determining to open or close a silicon controlled discharge circuit in the LED constant-current driving circuit according to the silicon controlled control signal value. Therefore, the linearity of low-luminance dimming is effectively improved.

The application discloses a power supply with an on-board rectification correction module, comprising an input filter module, a surge suppression module, a PFC rectification correction module and an output filter module; the input end of the input filter module inputs a 115Vac voltage; the output end of the input filter module is connected with the input end of the surge suppression module; the output end of the surge suppression module is connected with the input end of the PFC rectification correction module; the output end of the PFC rectification correction module is connected with the output filter module; and the output filter module can output a 260Vdc voltage. The 115Vac alternating current is converted into a pure and stable 260Vdc direct current output, the system tolerance to power grid surges and subsequent faults is significantly enhanced, and the strict requirements of the industrial, aviation and server fields on high-performance power supplies are met.

The present application relates to the technical field of air extractor, particularly relates to a direct drive improvement device of oil pumping unit; including tower body, platform, driver, shaft coupling, drum, crown assembly, belt, oil pumping rod, counterweight box and liquid cooling mechanism, the liquid cooling mechanism includes motor shell cooler, the platform is fixedly arranged on the top of the tower body, the driver, crown assembly and motor shell cooler are all fixedly arranged on the platform, the drum is rotatably arranged on the platform and located on one side of the driver, the driver and drum are drivingly connected through the shaft coupling, the crown assembly is located on one side of the driver, shaft coupling and drum, the belt is slidably arranged on the drum and crown assembly, the oil pumping rod and counterweight box are respectively fixedly arranged at two ends of the belt, the oil pumping rod is located on one side of the tower body, and the counterweight box is located below the platform; energy consumption is significantly reduced, frequent maintenance is not needed, and mechanical noise of the traditional reduction gearbox is eliminated.

The invention relates to the technical field of power electronics, and discloses a power factor correction method and system for an LED power supply. The method comprises the steps that an analog-digital hybrid control circuit based on a memristor is constructed, and PFC loop parameters are adjusted in real time by means of the non-volatile resistance change characteristic of the analog-digital hybrid control circuit; acquiring running state data and inputting the data into the control processor; optimizing memristor configuration by taking the power factor, the total harmonic distortion rate and the efficiency as fitness functions through a genetic algorithm; dynamically applying a voltage pulse to accurately adjust the resistance value of the memristor; and continuous self-tuning is carried out based on closed-loop feedback. The system comprises a memristor programmable gain amplifier, a sensor, a control processor and a health monitoring module. According to the scheme, hardware-level rapid, fine and self-adaptive PFC parameter regulation and control are realized, and the power factor stability, the system efficiency and the long-term reliability are improved.

The application discloses a Sepic type power correction circuit based on a switched inductor, which comprises switching tubes S1-S3, diodes D1-D5, inductors L1-L5, capacitors C1 and C o The diodes D3-D5 and the inductors L4 and L5 form a switched inductor structure, and the voltage gain of the converter is D / (2-D). Compared with a conventional Sepic PFC converter, the Sepic type power correction circuit based on the switched inductor improves the step-down gain, ensures that the whole duty cycle range is in a step-down state, and has a larger duty cycle than the conventional Sepic PFC converter in the case of a high step-down ratio, thereby effectively avoiding the emergence of a limit duty cycle. The no-bridge structure can realize lower conduction loss. The original output diode is replaced by the switched inductor structure, so that the output current is continuous, and the output current can be filtered. All the switching tubes are common ground, and a lower-cost driving circuit can be used.

This invention provides an integrated power flow regulation device and its control strategy, belonging to the field of power systems; it solves the problem of complex flexible DC transmission topologies; the specific control strategy is as follows: The voltage, inductor current, and DC bus voltage of grid 1 are acquired, and the dq current component is obtained through SOGI-PLL synchronization and coordinate transformation; based on the DC voltage of grid 1 and the given value of reactive power compensation, PI and ADRC control are performed, and a modulated wave U is output. ab‑ref The electrical quantities and power of the power grid are acquired, and after synchronization, coordinate transformation, and PI control, a modulated wave U is output. cb‑ref , will U ab‑ref with U cb‑ref Decoupling is performed to obtain the modulation waves of the three bridge arms, and SPWM is used to generate the pulse signal to drive the IGBT. This invention realizes the power flow regulation of two adjacent power grids through an integrated power flow regulation device, which reduces the circuit complexity of power flow regulation when the two power grids are asynchronously interconnected, and reduces the number of switching devices and operating losses.

The utility model relates to the technical field of suspension door controller, concretely to low pressure direct current brushless suspension door controller, include: wide voltage DC / DC module, its input end access 24V~48V power, output 12V direct current voltage, 5V linear voltage stabilizing circuit, its input end is connected with the 12V output of wide voltage DC / DC module, and output end exports 5V direct current voltage. In the utility model, adopt direct current brushless motor, can realize stepless speed regulation, and starting torque is big, and power factor is high, and efficiency is high, can make suspension door in low speed - high speed - low speed arbitrary smooth switching, and running noise is reduced obviously, can reduce mechanical wear and tear, prolong integral machinery life, simultaneously, it need not rely on operating capacitor, is not affected by the influence of the capacitor capacity drop under low temperature environment, can stably operate in various severe weather, and can satisfy long time continuous work demand, solve the existing single -phase alternating -current motor torque unstable, speed is difficult to control, error accumulation influence precision and the problem of normal operation under low temperature.

The present application belongs to the technical field of motor design, and more particularly relates to an alternating pole vernier permanent magnet motor based on a harmonic modified rotor and a magnetic barrier stator. Specifically, it comprises a rotor and a stator, the rotor is coaxially arranged in the stator, the pole of the rotor core adopts a harmonic modified directional design, the air gap permeance distribution is optimized to suppress non-working harmonics, and at the same time, the inter-pole leakage is reduced and the permanent magnet flux density fundamental amplitude is improved; and the magnetic barrier embedded in the stator tooth is used to block the low-order non-working harmonic path in the armature flux density, so as to weaken the amplitude. The present application solves the problem that the current motor simply applies the Halbach permanent magnet array to only realize the enhancement of working harmonics, ignores the non-working harmonics existing in the air gap, and fails to realize the full utilization of permanent magnets, resulting in the problems of low torque density and high manufacturing cost of the current alternating pole vernier permanent magnet motor.

The application discloses a bridgeless Cuk PFC converter based on a switched-inductor-capacitor structure, which comprises switching tubes S1-S3, diodes D1-D4, inductors L1-L5, capacitors C1, C2 and C o The diodes D3 and D4, the capacitor C2 and the inductors L3 and L4 form a switched-inductor-capacitor structure. The original freewheeling diode is replaced by the switched-inductor-capacitor structure, so that the voltage gain of the converter is D / 2(1-D), compared with a traditional Cuk PFC converter, the converter realizes positive voltage output and improves the voltage reduction gain, and the duty cycle range in the voltage reduction mode is wider. Meanwhile, the bridgeless structure is adopted, so that lower on-state loss can be realized. The converter has continuous input and output currents, high power factor and high efficiency, and has rich application.

The utility model provides a kind of charger for realizing high power belongs to charging technical field, including, single-phase full-bridge rectifier main circuit, for converting AC input into DC output, sampling conditioning circuit, the voltage division, filtering, isolation processing to the DC voltage after rectification and input AC voltage, output the sampling signal that meets adder and voltage controller level requirement, voltage controller, receives the voltage error signal generated by adder.According to the fixed conduction time of high-frequency switch tube in rectifier, the energy storage inductance is applied to the principle of volt-second balance, the turn-off time of high-frequency switch tube corresponding to different time is calculated, so that the current on the energy storage inductance always works in critical continuous mode, without adding extra current zero-crossing detection circuit, the circuit complexity is reduced, the reliability is improved, only a separate voltage controller is needed, to realize the high power factor of rectifier net side.

The invention discloses a power supply device of a high-efficiency electric furnace, which comprises an input power receiving part for receiving first power in an alternating-current voltage form; an input power conversion unit that converts the first power into second power in a DC voltage form; an output power conversion unit that converts the second power into third power in a DC or AC voltage form according to at least one preset heat generation region of the electric furnace and outputs the third power; and a control unit for controlling the output of the third power according to a preset temperature formula for the electric furnace. The control method comprises the following steps: an input power receiving step: receiving first power in an alternating voltage form; an input power conversion step of converting the input power into second power in a DC voltage form; an output power conversion step of converting the second power into third power in a direct-current or alternating-current voltage form according to at least one preset heating area of the electric furnace and outputting the third power; and a control step of controlling the output of the third power according to a preset temperature formula for the electric furnace.

The utility model provides a power module, which comprises the following steps: the power module comprises a lining plate and a power circuit arranged on the lining plate, the power circuit comprises a Vienna rectifier circuit and a three-phase full-bridge circuit, and the output end of the Vienna rectifier circuit is connected with the input end of the three-phase full-bridge circuit; wherein power devices in the Vienna rectification circuit and the three-phase full-bridge circuit are composed of a plurality of power chips with corresponding functions, and the power chips are silicon carbide power chips. The power factor of the power module can be improved by adopting the Vienna rectifying circuit, meanwhile, the output current of the power module is improved through the plurality of power chips, so that the output power is improved, a silicon carbide-based chip is further adopted to replace an existing silicon-based chip, the size of the chip can be reduced, and the cost is reduced. Therefore, under the condition that higher output power is set, the size of the power module is prevented from being increased.

The invention relates to the technical field of power equipment control, and provides an energy-saving optimization control method, system and device of a JP cabinet and a medium. The method comprises the following steps: acquiring a voltage phase at a main incoming line and a current phase of each power distribution branch in real time, and generating a phase synchronization margin between the JP cabinet and each branch based on the voltage phase and each current phase; determining a current active power threshold value based on the phase synchronization margin and a preset active power threshold value, and judging whether to perform energy-saving optimization on the JP cabinet based on the active power of the JP cabinet in a preset time period and the current active power threshold value; and if yes, performing phase compensation on each branch. According to the method, the power factor of the JP cabinet is improved, the line loss is reduced, and stable, reliable and self-adaptive energy-saving optimization control is realized on the premise of ensuring the safety of optimization operation.

This invention discloses an active power calibration method, a drive circuit, and an air conditioner. The active power calibration method includes: acquiring instantaneous current values ​​in the drive circuits of multiple sets of electrical devices under test, setting a compensation coefficient for each instantaneous current value to obtain an instantaneous voltage value, and calculating the effective value of the input voltage based on the instantaneous voltage value; determining the sampling time of the inductor current parameter in the drive circuit based on the switching time parameter of the switching transistor in the drive circuit, and calculating the effective value of the input current based on the inductor current parameter acquired at the sampling time; and calculating the active power of the drive circuit of the electrical device using the effective value of the input voltage and the effective value of the input current. Compared with the prior art, this invention adopts a voltage sampling compensation method, considers the switching delay of the switching transistor and the equivalent point of the triangular wave to select the sampling time of the inductor current parameter, and combines it with a power factor improvement method to improve the calculation accuracy of active power, thereby improving the calculation accuracy of energy consumption.

The invention relates to the technical field of charging and discharging equipment, in particular to a super capacitor charging circuit and a super capacitor charger for a variable pitch system. The super capacitor charging circuit is of a three-level structure formed by connecting an EMI filter circuit, a PFC circuit and three independent ACF circuits in parallel, the three-level topological structure integrates core functions of filtering, power correction and isolation transformation, redundant components are reduced, hardware cost and installation space requirements are reduced, and the super capacitor charging circuit is adaptive to compact scene application; meanwhile, through the fusion design of the ACF circuit and the PFC circuit and the combination of the zero-voltage switching and zero-current switching technologies, the switching loss and electromagnetic interference are greatly reduced, the high power factor is ensured, and the problems of efficiency superposition loss of a traditional two-stage architecture and limited power of a single-stage architecture are solved; the three ACF circuits operate in parallel and independently work, and can charge the three super capacitors at the same time to save cost; the maintenance or fault of a single ACF circuit does not affect the normal operation of other loops, and the reliability of the system is improved.

The invention relates to the technical field of switching power supplies, and discloses a two-stage active power factor correction circuit and a switching power supply in order to solve the problems of low power factor and high harmonic pollution caused by the fact that the input of the switching power supply is alternating current. The circuit comprises an electromagnetic interference filter, a rectifier bridge, a PFC booster circuit, an LLC half-bridge resonance compensation circuit and a controller which are connected in sequence. The PFC booster circuit is used for boosting the voltage output by the rectifier bridge to the high-voltage direct-current bus voltage; the LLC half-bridge resonance compensation circuit is used for converting the high-voltage direct-current bus voltage output by the PFC booster circuit into stable low-voltage direct current required by a load by adjusting the switching frequency of the LLC half-bridge resonance compensation circuit; the controller is used for controlling the working mode of the PFC booster circuit according to the magnitude of the output current of the LLC half-bridge resonance compensation circuit; meanwhile, the output voltage of the LLC half-bridge resonance compensation circuit is sampled, and the switching frequency of the LLC half-bridge resonance compensation circuit is adjusted according to feedback of the output voltage. By adopting the circuit, the power utilization efficiency of power equipment is improved, and harmonic interference is reduced.

The invention discloses a single-stage AC-DC converter control method, system, device and equipment and a storage medium, and belongs to the field of electric energy conversion, and the method comprises the steps: simplifying a duty ratio expression according to a whole power factor control strategy, and obtaining a simplified conduction duty ratio; determining a Taylor expansion point according to the simplified conduction duty ratio to obtain theoretical conduction time; timing is started from the switch conduction moment of the current switching period until demagnetization is detected to be finished, counting is carried out, a predicted value of the next switching period is obtained, and a conduction time predicted value of the next switching period is determined based on the theoretical conduction time; and determining the conduction time correction based on output voltage closed-loop control, and superposing the conduction time predicted value of the next switching period and the conduction time correction to obtain the final switching conduction time so as to realize control of the single-stage AC / DC converter. According to the invention, the equivalent switching frequency can be improved, the power density of switching power supply products is improved, the device stress is reduced, and the model selection cost is reduced.

The application provides a direct current coupling light storage system, method, device, electronic equipment and storage medium, comprising: acquiring a power grid state and an energy management mode; when the power grid state is a normal state, performing redundant power supply and guaranteeing power supply through a photovoltaic module, an energy storage system and a power distribution network, and when the power grid state is an abnormal state, performing redundant power supply for an off-grid load through the photovoltaic module and the energy storage system; acquiring operation information of the power grid state, wherein the operation information is obtained by an intelligent electric meter to acquire a power grid voltage, frequency, current and harmonic; if the operation information is within a grid-connected range, performing corresponding energy management on a DC / AC of the power distribution network side according to intelligent electric meter data; if the operation information is outside the grid-connected range, the direct current coupling light storage system is switched from the normal state to the abnormal state, and a control algorithm for stabilizing alternating current voltage and frequency is used to supply power to the off-grid load. The application has the beneficial effects of improving new energy consumption capacity of the direct current coupling light storage system and improving safety of interaction with the power distribution network.

The invention provides a switching power supply circuit with higher reliability, which comprises a primary side main control circuit, a secondary side main control circuit and an isolation communication module, and is characterized in that the primary side main control circuit comprises a first control module, a PFC (Power Factor Correction) voltage regulation output circuit, a second conversion module and a PFC controller; the secondary side main control circuit comprises a second control module, an indoor and outdoor power supply judgment module and an output voltage and current detection module, the indoor and outdoor power supply judgment module and the output voltage and current detection module are connected with the second control module, and the PFC controller controls the PFC voltage regulation output circuit to output stable conversion voltage. The second control module controls the output of the second conversion module according to a detection value of the output voltage and current detection module to realize closed-loop control of a voltage and current loop, the second control module obtains a detection result of the indoor and outdoor power supply judgment module, and when power is supplied to an indoor power supply line, the second control module controls the output of the second conversion module to realize closed-loop control of the voltage and current loop. The second control module controls current derating output. According to the invention, the safety of electricity utilization can be improved.

The present application relates to the technical field of energy storage, and provides a three-phase active power independent configuration method for a converter based on a minimum norm solution, constructs the correlation between three-phase current and voltage, establishes a linear equation set according to the KCL current constraint condition and the correlation, solves the linear equation set through a minimum norm solution standard algorithm, generates three-phase current sine reference values based on the output angle of a grid phase-locked loop, separates positive and negative sequence components through a signal delay method, obtains positive and negative sequence voltages by using a double-current loop feedforward decoupling control algorithm, generates voltage values through Park inverse transformation, generates PWM signals to drive the conduction or turn-off of converter power switching tubes according to the voltage values, and outputs three-phase voltages. The present application realizes independent and flexible configuration of three-phase active power and automatic minimization of reactive power, guarantees the real-time performance of control and engineering compatibility, adapts to complex scenarios such as distributed energy access and unbalanced load compensation, and improves the stability of power grid operation and energy utilization efficiency.

This utility model discloses a high-efficiency conversion circuit for a high-frequency resonant LED driver power supply, including a power conversion circuit comprising a PFC relay circuit, a MOSFET driver circuit, a constant current module circuit, a voltage feedback circuit, and a current limiting protection circuit. This high-efficiency conversion circuit for a high-frequency resonant LED driver power supply selects an LLC resonant converter as the LED driver power supply. The power correction circuit and the LLC resonant circuit use a large number of electrolytic capacitors to eliminate noise in the input and output signals, avoiding environmental limitations in practical applications and meeting the needs of highly intelligent, high-power LED power supplies. The LLC resonant converter parameters enable soft-start, thereby reducing switching losses. The PFC relay module corrects the input current. Analysis of the selection of PFC output capacitor and MOSFET parameters improves the circuit's power factor.

The application provides a motor, and relates to the technical field of motors.The motor comprises a rotor core, a first magnet embedded in the rotor core, N first magnets, N is an integer greater than 1, the N first magnets are distributed at intervals in the circumferential direction of the rotor core, and a second magnet embedded in the rotor core, the second magnet is located between two adjacent first magnets in the circumferential direction of the rotor core; wherein the rotor core is cut by a plane perpendicular to the axis of the rotor core to obtain a cross section; in the cross section, the first magnet extends in the circumferential direction of the rotor core, and the second magnet extends in the radial direction of the rotor core.

The application provides a power distribution transformer noise testing device and method, comprising a first capacitor group, one end of which is connected with a voltage divider, and the other end of which is connected with a power supply; a second capacitor group, one end of which is connected with a first end of the power distribution transformer to be tested, and the other end of which is connected with a current transformer; the other end of the power supply is connected with the voltage divider, and the two ends of the voltage divider are respectively connected with a second end and a third end of the power distribution transformer to be tested; and the other end of the current transformer is connected with a fourth end of the power distribution transformer. The application adopts the capacitor group to compensate the inductance of the primary and secondary sides, improves the power factor of the experimental circuit, realizes the noise testing of the power distribution transformer under the rated working condition (voltage and current), and reduces the requirement of the experimental circuit on the power supply capacity.

The application relates to the motor technical field and provides a motor and controller integrated driving system, which comprises a driving motor, a motor end cover and a rotor assembly, the rotor assembly comprises a rotating shaft and a hybrid rotor installed on the rotating shaft, a controller, the controller comprises a first shell, a second shell, a control module and a rotor position detection device, the first shell and the second shell are arranged on one side of the motor end cover and jointly enclose a containing space together with the motor end cover, the control module and the rotor position detection device are arranged in the containing space, the hybrid rotor comprises a synchronous reluctance rotor section and a permanent magnet rotor section arranged along the axial direction of the rotating shaft, the synchronous reluctance rotor section and the permanent magnet rotor section have the same number of poles, the outer diameter r1 of the synchronous reluctance rotor section is larger than the outer diameter r2 of the permanent magnet rotor section, and 0.5mm < r1-r2 < 0.7mm is met. The overall structure is compact, the torque density is high, the power factor is large, the efficiency is high and the cost is reduced.

The utility model relates to the technical field of reactive power compensation devices, and discloses a reactive power compensation device for improving a power factor, which comprises an equipment main body, a supporting rod is fixedly arranged at the bottom of the equipment main body, a top block is fixedly connected to the inner wall of the bottom of the equipment main body, and a magnet is arranged on the inner wall of the top block. And a straight rod is fixedly mounted at the bottom of the top block. According to the reactive power compensation device capable of improving the power factor, a controller is controlled, a motor is used for driving a first gear to rotate, the first gear drives a sliding block to move through a second gear, a base drives universal wheels to ascend and descend, personnel can conveniently move to a destination to store the universal wheels, and the base slides on the outer wall of a round rod, so that the working efficiency is improved. Through the arrangement of the round rods, when the universal wheels make contact with the ground to move, the base is limited through the round rods, deviation of the moving track is avoided, through the arrangement of the universal wheels, the equipment moving convenience is improved, and the problems that traditional equipment is manually carried, and time and labor are wasted are solved.

The invention relates to the technical field of plant illumination, and discloses a plant growth full-spectrum LED intelligent driving and dimming system which comprises a full-spectrum LED array module, a driving module, a control module, a sensing module and a feedback regulation and control module. The full-spectrum LED array module comprises five kinds of LED lamp beads and covers the ultraviolet A wave band and the spectral ranges of blue light, red light, far-red light and white light. And the driving module adopts a two-stage structure of a front-stage active PFC circuit and a rear-stage half-bridge LLC resonant converter. According to the plant growth full-spectrum LED intelligent driving and dimming system, a full-spectrum LED array module is optimized through an MATLAB exhaustion method to complete non-uniform layout, an illuminance sensor of a sensing module collects illumination data in a 100 ms period, a feedback regulation and control module calls a light uniformizing control algorithm to be combined with a Lambert formula and an improved Portrait equation to establish a precise mathematical model, and the precise mathematical model is used for driving the full-spectrum LED array module to conduct dimming on the full-spectrum LED array module. The double-closed-loop inner ring adjusts the PWM duty ratio of each LED branch in real time according to the PWM duty ratio, rapidly compensates illumination difference, and thoroughly solves the problem that the center is bright and the periphery is dark.

This utility model discloses a high-efficiency direct-drive variable frequency permanent magnet motor for mud pumps, relating to the field of permanent magnet direct-drive motor technology. It includes a frame, a motor, and a powerful cooling fan. This utility model employs permanent magnet direct-drive variable frequency technology, eliminating rotor losses in the motor, significantly improving the power factor, and increasing efficiency by 10%-15% compared to traditional motors. This effectively reduces energy consumption and fully complies with national energy conservation and emission reduction requirements. It eliminates the traditional speed-changing mechanism, directly driving the mud pump and avoiding transmission losses from belts, chains, and other components. Compared to traditional transmission methods, transmission efficiency can be significantly improved by 15%-20%, greatly enhancing the overall working efficiency of the mud pump. This utility model has a simple structure, reducing a large number of transmission components and vulnerable parts, lowering the frequency and difficulty of maintenance and repair. The motor adopts a fully enclosed design with a high protection level, effectively preventing dust, moisture, and other external impurities from entering the motor, further ensuring its reliability.

This application discloses a relay intelligent control method and system for AC loads. The method includes the following steps: based on the multimodal data of the relay, predicting and updating the mechanical action delay of the relay; and issuing a drive command before the AC zero-crossing point based on the predicted mechanical action delay after receiving a switching command; using parallel hardware fast protection channels and software diagnostic channels to monitor and protect the relay coil in real time; and constructing a switching control strategy library optimized based on intelligent algorithms learning historical experience to identify the load type in real time and dynamically switch the optimal switching control strategy accordingly. The system is used to implement the above method. The beneficial effects of this application are: by combining the hardware fast protection channel with the software protection channel, the circuit can be immediately cut off in the event of a severe short-circuit fault. The hardware protection operates independently of the controller, and combined with the intelligent diagnostics of the software channel, a dual protection redundancy is formed, significantly improving the system's safety level.