Energy-saving control device driven by brushless direct current motor

Abstract

The invention discloses an energy-saving control device driven by a brushless direct current motor, which comprises a central data control module, a PFC (Power Factor Correction) module and a power control module, and has the beneficial effects that a plurality of intelligent control modules, such as a motor driving energy-saving control module, a self-adaptive control unit and a predictive control unit, are integrated; a control strategy can be dynamically adjusted according to the actual operation condition and historical data, the optimal energy-saving effect is achieved, meanwhile, unnecessary energy consumption is further reduced through a load matching module and an intermittent operation module, a comprehensive protection mechanism is built in, and the energy-saving effect is good. Comprising a current detection module (over-current protection and short-circuit protection), a voltage detection module (under-voltage and over-voltage detection), an abnormity monitoring module (position and overspeed monitoring) and a fault protection module which can monitor the running state of the motor in real time and take measures rapidly when faults or abnormal conditions occur.

Description

Technical Field

[0001] The present invention relates to the technical field of energy-saving control devices, and particularly to an energy-saving control device driven by a brushless DC motor. Background Technique

[0002] With the rapid development of industrial automation and intelligent technologies, brushless DC motors (BLDCMs) have been widely used in many fields such as electric vehicles, industrial automation, aerospace, and household appliances due to their advantages of high efficiency, low noise, long lifespan, and easy implementation of precise control. A brushless DC motor (Brushless Direct Current Motor, abbreviated as BLDCM) is a small-power DC motor with electronic commutation, also known as a non-commutator motor or a non-commutator DC motor. The working principle of a brushless DC motor is to replace the mechanical commutator in a traditional DC motor with an electronic commutator, and use a semiconductor inverter to convert direct current into alternating current to drive the motor. A position sensor is installed inside the motor to detect the polarity of the motor rotor, thereby controlling the on / off of each power transistor in the inverter bridge to generate continuous torque. At the same time, by receiving speed commands and speed feedback signals, the speed is controlled and adjusted. During the driving process of a brushless DC motor, precise control of motor parameters is crucial for improving energy efficiency and stability. Traditional drive systems usually adopt fixed control strategies, which are difficult to adapt to changes in different working conditions and load conditions, resulting in high energy consumption and poor control effects. In addition, the motor may encounter fault conditions such as under-voltage, over-voltage, over-current, short-circuit, and overheating during operation. Without timely and effective protection measures, it may damage the motor and control system, and even cause safety accidents. Summary of the Invention

[0003] The purpose of the present invention is to provide an energy-saving control device driven by a brushless DC motor to solve the problems raised in the above background technique, that is, traditional drive systems usually adopt fixed control strategies, which are difficult to adapt to changes in different working conditions and load conditions, resulting in high energy consumption and poor control effects. In addition, the motor may encounter fault conditions such as under-voltage, over-voltage, over-current, short-circuit, and overheating during operation. Without timely and effective protection measures, it may damage the motor and control system, and even cause safety accidents.

[0004] To achieve the above object, the present invention provides the following technical solutions: An energy-saving control device driven by a brushless DC motor, comprising a central data control module, a PFC module, a power control module, a signal control module, a current monitoring module, a current detection module, a voltage monitoring module, a voltage detection module, a temperature monitoring module, a heat protection module, a speed / position measurement module, an anomaly monitoring module, a vibration monitoring module, a position detection module, an auxiliary communication module, a brushless DC motor precise control module, a fault protection module, a pulse width modulation control module, an FOC control module, a sine wave control module, and a motor drive energy-saving control module. The central data control module is bidirectionally connected to the PFC module, the central data control module is bidirectionally connected to the power control module, the power control module is bidirectionally connected to the signal control module, the central data control module is bidirectionally connected to the current monitoring module, the current monitoring module is bidirectionally connected to the current detection module, the central data control module is bidirectionally connected to the voltage monitoring module, the voltage monitoring module is bidirectionally connected to the voltage detection module, the central data control module is bidirectionally connected to the temperature monitoring module, the temperature monitoring module is bidirectionally connected to the heat protection module, the central data control module is bidirectionally connected to the speed / position measurement module, the speed / position measurement module is bidirectionally connected to the position detection module, the central data control module is bidirectionally connected to the anomaly monitoring module, the central data control module is bidirectionally connected to the brushless DC motor precise control module, the central data control module is bidirectionally connected to the vibration monitoring module, the signal control module is bidirectionally connected to the auxiliary communication module, the anomaly monitoring module is bidirectionally connected to the brushless DC motor precise control module, the brushless DC motor precise control module is bidirectionally connected to the fault protection module, the central data control module is bidirectionally connected to the pulse width modulation control module, the pulse width modulation control module is bidirectionally connected to the FOC control module, the FOC control module is bidirectionally connected to the sine wave control module, and the sine wave control module is bidirectionally connected to the motor drive energy-saving control module;

[0005] The central data control module is used for centralized storage management of the collected data during the driving of the brushless DC motor;

[0006] The PFC module is used to boost the power factor to 1 and reduce the loss of reactive power so that the input power can be fully utilized;

[0007] The power control module is used to convert the direct current provided by the power supply into alternating current and control the electrical energy required by the motor;

[0008] The signal control module is used to control and process the driving signal of the brushless DC motor;

[0009] The current monitoring module is used to monitor the magnitude of the current in the motor winding and perform real-time feedback processing on the current information;

[0010] The current detection module is used to monitor the overcurrent and short-circuit protection mechanism of the motor current, estimate the rotor position and speed, and perform FOC closed-loop control of the brushless motor.

[0011] The voltage monitoring module is used to monitor the fluctuation of the motor power supply voltage;

[0012] The voltage detection module is used to perform undervoltage and overvoltage detection on the motor to ensure that the power supply voltage is within a safe range;

[0013] The temperature monitoring module is used to monitor the temperature of the motor and its control system;

[0014] The thermal protection module protects the motor from overheating. When overheating occurs, the relevant control module will reduce the speed of the motor, that is, reduce its operating power until the temperature returns to the normal threshold, otherwise it will continue to reduce the speed until it finally stops running;

[0015] The speed / position measurement module is used to measure the speed and rotor position of the motor, calculate the motor speed and rotor position according to the data detected by the current monitoring module, and output the next accurate driving signal to drive the motor rotor to rotate smoothly to the next position;

[0016] The abnormality monitoring module is used to monitor the position information and speed of the motor, and perform abnormal monitoring and processing on stall, phase loss and stall;

[0017] The vibration monitoring module is used to monitor the vibration of the motor and detect motor imbalance and bearing damage problems;

[0018] The position detection module is used to detect the rotor position of the brushless DC motor by monitoring the relative position change between the rotor magnetic pole and the Hall element;

[0019] The auxiliary communication module is used for networking control using RS485;

[0020] The brushless DC motor precision control module regulates the driving speed, braking, and forward and reverse rotation of the brushless DC motor;

[0021] The fault protection module is used to monitor the running status of the motor and take timely measures when a fault occurs;

[0022] The pulse width modulation control module is used to control the speed and torque of the motor by changing the duty cycle of the PWM signal, so as to maintain a stable control effect when the load changes greatly;

[0023] The FOC control module is used to precisely control the current and magnetic field of the motor to achieve high-performance control of the motor;

[0024] The sine wave control module is used to output three-phase sine wave voltage using SVPWM waves, and the motor phase current is a sine wave current;

[0025] The motor drive energy-saving control module is used for adaptive and predictive control, and uses AI and machine learning technologies to dynamically adjust the strategy according to the real-time and historical data of the motor.

[0026] Preferably, the current detection module includes an overcurrent protection unit and a short-circuit protection unit, and the overcurrent protection unit and the short-circuit protection unit are connected bidirectionally:

[0027] The overcurrent protection unit is used to monitor whether the current during the operation of the motor exceeds the rated value, and can quickly cut off the power supply when the current exceeds the set value;

[0028] The short-circuit protection unit is used to detect whether there is a short-circuit fault in the motor circuit, and immediately cuts off the power supply during a short-circuit fault to prevent further damage.

[0029] Preferably, the voltage detection module includes an undervoltage detection unit and an overvoltage detection unit, and the undervoltage detection unit and the overvoltage detection unit are connected bidirectionally;

[0030] The undervoltage detection unit is used to monitor whether the power supply voltage is lower than the set safety valve value, and will trigger a protection mechanism when the voltage is lower than the set value, cutting off the motor power supply or reducing the motor power;

[0031] The overvoltage detection unit is used to monitor whether the power supply voltage is too high, and will take protection measures when the voltage exceeds the set value, such as cutting off the power supply and adjusting the voltage.

[0032] Preferably, the abnormal monitoring module includes a position monitoring unit and an overspeed monitoring unit, and the position monitoring unit and the overspeed monitoring unit are connected bidirectionally:

[0033] The position monitoring unit is used to monitor the position information of the motor and monitor whether the position of the motor exceeds the set range;

[0034] The overspeed monitoring unit is used to monitor the speed information of the motor and monitor whether the speed exceeds the set range. Position and overspeed monitoring: used to monitor whether the position information and speed of the motor exceed the set range.

[0035] Preferably, the fault protection module is bidirectionally connected to a drive module protection module, and the drive module protection module includes a control voltage undervoltage lockout unit, an overheat protection unit, an overcurrent protection unit, and an open-circuit protection unit.

[0036] Preferably, the motor drive energy-saving control module includes an adaptive control unit and a predictive control unit, and the adaptive control unit is bidirectionally connected to the predictive control unit;

[0037] The adaptive control unit is used to perform adaptive control through artificial intelligence and machine learning technologies, and adjust the control strategy in real time according to the actual operating conditions of the motor to achieve the best energy-saving effect;

[0038] The predictive control unit analyzes the historical operation data of the motor, predicts the future operating state, and adjusts the control strategy in advance to reduce energy consumption.

[0039] Preferably, the motor drive energy-saving control module is bidirectionally connected to a load matching module, and the load matching module is used to adjust the operating parameters of the motor according to the actual load condition of the motor.

[0040] Preferably, the motor drive energy-saving control module is bidirectionally connected to an intermittent operation module, and the intermittent operation module starts the motor when needed and stops the motor when not needed.

[0041] Preferably, the speed / position measurement module includes an optoelectronic coding module and a magnetic coding module.

[0042] Preferably, the auxiliary communication module includes a communication unit and a power supply unit, and the communication unit is bidirectionally connected to the power supply unit;

[0043] The communication unit is used to transmit the driving information of the brushless DC motor through wireless signals and perform control processing on the driving of the brushless DC motor through remote signal data;

[0044] The power supply unit is used to perform centralized power supply processing on the driving of the brushless DC motor.

[0045] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure.

[0046] Compared with the prior art, the beneficial effects of the present invention are as follows: By integrating multiple intelligent control modules, such as a motor drive energy-saving control module, an adaptive control unit, and a predictive control unit, it is possible to dynamically adjust the control strategy according to the actual operating conditions and historical data to achieve the optimal energy-saving effect. At the same time, the load matching module and the intermittent operation module further reduce unnecessary energy consumption. The present invention is built with a comprehensive protection mechanism, including a current detection module (overcurrent protection and short-circuit protection), a voltage detection module (undervoltage and overvoltage detection), an abnormal monitoring module (position and overspeed monitoring), and a fault protection module. These modules can monitor the operating state of the motor in real time and take prompt measures when a fault or abnormal situation occurs to protect the motor and the control system from damage. By using an optoelectronic coding module and a magnetic coding module in the speed / position measurement module, the speed and rotor position of the motor can be accurately measured, providing accurate information for the control system to achieve more precise speed control and position positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0048] Figure 1 It is a system block diagram of the present invention; Figure 2 It is a composition diagram of the electronic system of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0049] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are only examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0051] See Figure 1As shown in the figure, an energy-saving control device driven by a brushless DC motor according to an embodiment of the present invention includes a central data control module, a PFC module, a power control module, a signal control module, a current monitoring module, a current detection module, a voltage monitoring module, a voltage detection module, a temperature monitoring module, a heat protection module, a speed / position measurement module, an anomaly monitoring module, a vibration monitoring module, a position detection module, an auxiliary communication module, a brushless DC motor precise control module, a fault protection module, a pulse width modulation control module, an FOC control module, a sine wave control module, and a motor drive energy-saving control module. The central data control module is bidirectionally connected to the PFC module, the central data control module is bidirectionally connected to the power control module, the power control module is bidirectionally connected to the signal control module, the central data control module is bidirectionally connected to the current monitoring module, the current monitoring module is bidirectionally connected to the current detection module, the central data control module is bidirectionally connected to the voltage monitoring module, the voltage monitoring module is bidirectionally connected to the voltage detection module, the central data control module is bidirectionally connected to the temperature monitoring module, the temperature monitoring module is bidirectionally connected to the heat protection module, the central data control module is bidirectionally connected to the speed / position measurement module, the speed / position measurement module is bidirectionally connected to the position detection module, the central data control module is bidirectionally connected to the anomaly monitoring module, the central data control module is bidirectionally connected to the brushless DC motor precise control module, the central data control module is bidirectionally connected to the vibration monitoring module, the signal control module is bidirectionally connected to the auxiliary communication module, the anomaly monitoring module is bidirectionally connected to the brushless DC motor precise control module, the brushless DC motor precise control module is bidirectionally connected to the fault protection module, the central data control module is bidirectionally connected to the pulse width modulation control module, the pulse width modulation control module is bidirectionally connected to the FOC control module, the FOC control module is bidirectionally connected to the sine wave control module, and the sine wave control module is bidirectionally connected to the motor drive energy-saving control module;

[0052] The central data control module is used for centralized storage management of the collected data during the driving of the brushless DC motor;

[0053] The PFC module is used to boost the power factor to 1, reduce the loss of reactive power, and thus make full use of the input power;

[0054] The power control module is used to convert the direct current provided by the power supply into alternating current and control the electrical energy required by the motor;

[0055] The signal control module is used for controlling and processing the driving signal of the brushless DC motor;

[0056] The current monitoring module is used to monitor the magnitude of the current in the motor winding, perform real-time feedback processing on the current information. By real-time feedback of the current information, the control system can adjust the voltage or current input to the motor, thereby optimizing the torque output and efficiency of the motor and achieving energy-saving effects;

[0057] The current detection module is used to monitor the overcurrent and short - circuit protection mechanism of the motor current, estimate the rotor position and speed, and perform FOC closed - loop control of the DC brushless motor based on this;

[0058] The voltage monitoring module is used to monitor the fluctuation of the motor supply voltage. This module can detect voltage abnormalities in a timely manner and trigger corresponding protection measures to avoid damage to the motor due to unstable voltage, improving the reliability and stability of the system;

[0059] The voltage detection module is used to detect undervoltage and overvoltage of the motor to ensure that the power supply voltage is within a safe range;

[0060] The temperature monitoring module is used to monitor the temperature of the motor and its control system;

[0061] The heat protection module provides overheat protection for the motor. When overheating occurs, the relevant control module will reduce the speed of the motor, that is, reduce its operating power until the temperature returns to the normal threshold. Otherwise, it will continue to reduce the speed until it finally stops running;

[0062] The speed / position measurement module is used to measure the speed and rotor position of the motor. It calculates the motor speed and rotor position based on the data detected by the current detection module and outputs the next accurate drive signal to drive the motor rotor to rotate smoothly to the next position;

[0063] The abnormal monitoring module is used to monitor the position information and speed of the motor, and perform abnormal monitoring and processing of stall, under - phase, and locked - rotor;

[0064] The vibration monitoring module is used to monitor the vibration of the motor, detect problems such as motor imbalance and bearing damage. Monitoring the vibration of the motor is an important module for preventing mechanical failures. By providing real - time feedback of vibration information, the control system can timely detect potential problems of motor imbalance and bearing damage and take corresponding preventive measures to avoid the occurrence of failures and extend the service life of the motor;

[0065] The position detection module is used to detect the rotor position of the brushless DC motor. By monitoring the relative position change between the rotor magnetic pole and the Hall element, it detects the rotor position of the brushless DC motor. It is a key module for realizing precise commutation control of the motor. By monitoring the relative position change between the rotor magnetic pole and the Hall element, this module can accurately provide commutation timing information to ensure continuous and smooth rotation of the motor;

[0066] The auxiliary communication module is used for networking control using RS485;

[0067] The brushless DC motor precise control module adjusts the driving speed, braking, and forward - reverse rotation of the brushless DC motor;

[0068] The fault protection module is used to monitor the operating state of the motor and take timely measures in case of faults;

[0069] The pulse width modulation control module is used to control the speed and torque of the motor by changing the duty cycle of the PWM signal, and maintain a stable control effect under the condition of large load changes;

[0070] The FOC control module is used to precisely control the current and magnetic field of the motor to achieve high-performance control of the motor;

[0071] The sine wave control module is used to output three-phase sine wave voltage using SVPWM wave. The motor phase current is a sine wave current. Compared with square wave control, sine wave control has less torque ripple, less current harmonics, and more delicate control, and is suitable for high-precision application scenarios with high requirements for noise and vibration;

[0072] The motor drive energy-saving control module is used for adaptive and predictive control. Using AI and machine learning technologies, it dynamically adjusts strategies according to the real-time and historical data of the motor to achieve the optimal energy-saving effect.

[0073] Among them, the current detection module includes an overcurrent protection unit and a short-circuit protection unit, and the overcurrent protection unit and the short-circuit protection unit are connected bidirectionally:

[0074] The overcurrent protection unit is used to monitor whether the current during the operation of the motor exceeds the rated value, and can quickly cut off the power supply when the current exceeds the set value. Excessive current may cause the motor to overheat, be damaged or cause a fire safety accident. The overcurrent protection unit will quickly cut off the power supply when the current exceeds the set value to protect the motor and the control system;

[0075] The short-circuit protection unit is used to detect whether there is a short-circuit fault in the motor circuit, and immediately cut off the power supply in case of a short-circuit fault to prevent further damage. If a short-circuit occurs, the current will increase sharply, which may damage the motor and the control system. The short-circuit protection module will immediately cut off the power supply to prevent further damage.

[0076] Among them, the voltage detection module includes an undervoltage detection unit and an overvoltage detection unit, and the undervoltage detection unit and the overvoltage detection unit are connected bidirectionally;

[0077] The undervoltage detection unit is used to monitor whether the power supply voltage is lower than the set safety valve value, and will trigger a protection mechanism when the voltage is lower than the set value, cut off the motor power supply or reduce the motor power. If the voltage is too low, it may cause the motor to malfunction or be damaged. Therefore, undervoltage detection will trigger a protection mechanism when the voltage is lower than the set value, cut off the motor power supply or reduce the motor power;

[0078] The overvoltage detection unit is used to monitor whether the power supply voltage is too high. When the voltage exceeds the set value, it will take protective measures, such as cutting off the power supply and adjusting the voltage. Excessively high voltage may damage the insulation layer of the motor or the control circuit. The overvoltage detection module will take protective measures when the voltage exceeds the set value, such as cutting off the power supply or adjusting the voltage.

[0079] Among them, the abnormal monitoring module includes a position monitoring unit and an overspeed monitoring unit, and the position monitoring unit and the overspeed monitoring unit are connected bidirectionally:

[0080] The position monitoring unit is used to monitor the position information of the motor and check whether the position of the motor exceeds the set range;

[0081] The overspeed monitoring unit is used to monitor the speed information of the motor and check whether the speed exceeds the set range. Position and overspeed monitoring: used to monitor whether the position information and speed of the motor exceed the set range. If the position of the motor is abnormal or the speed is too high, it may cause a safety accident. Therefore, these protection modules will take measures in time when detecting abnormal situations, such as cutting off the power supply, reducing the speed or issuing an alarm.

[0082] Among them, the fault protection module is connected bidirectionally with the drive module protection module. The drive module protection module includes a control voltage undervoltage lock unit, an overheat protection unit, an overcurrent protection unit and a break protection unit. These functions can ensure that the drive module can quickly cut off the power supply or adjust the working state when a fault occurs, so as to protect the motor and the control system.

[0083] Among them, the motor drive energy-saving control module includes an adaptive control unit and a predictive control unit, and the adaptive control unit and the predictive control unit are connected bidirectionally;

[0084] The adaptive control unit is used for adaptive control through artificial intelligence and machine learning technologies, and adjusts the control strategy in real time according to the actual operating conditions of the motor to achieve the best energy-saving effect;

[0085] The predictive control unit analyzes the historical operation data of the motor, predicts the future operation state, and adjusts the control strategy in advance to reduce energy consumption.

[0086] Among them, the motor drive energy-saving control module is connected bidirectionally with a load matching module. The load matching module is used to adjust the operating parameters of the motor according to the actual load condition of the motor, and avoid the motor from operating under light load or no load conditions to reduce unnecessary energy consumption.

[0087] Among them, the motor drive energy-saving control module is connected bidirectionally with a load matching module. The load matching module is used to adjust the operating parameters of the motor according to the actual load condition of the motor and avoid the motor from operating under light load or no load conditions.

[0088] Among them, the motor drive energy-saving control module is bidirectionally connected to the intermittent operation module. The intermittent operation module starts the motor when needed and stops the motor when not needed, reducing energy consumption through intermittent operation.

[0089] Among them, the rotational speed / position measurement module includes an optoelectronic coding module and a magnetic coding module.

[0090] Among them, the auxiliary communication module includes a communication unit and a power supply unit, and the communication unit is bidirectionally connected to the power supply unit;

[0091] The communication unit is used to transmit the drive information of the brushless DC motor through wireless signals, and control and process the drive of the brushless DC motor through remote signal data;

[0092] The power supply unit is used to centrally supply power to the drive of the brushless DC motor.

[0093] Specifically, during use, initialization is first performed to prepare for centralized storage and management of the acquisition data during motor drive. The PFC module is used to boost the power factor to 1, reduce the loss of reactive power, and thus fully utilize the input power. Subsequently, direct current is converted into alternating current, and the electrical energy output is controlled according to the motor's requirements. At the same time, necessary control processing is carried out on the drive signal of the brushless DC motor. The current magnitude of the motor winding is monitored in real time and fed back to the control system. The overcurrent and short-circuit protection mechanisms of the motor current are monitored, used for the estimation of the rotor position and speed, and based on this, the FOC closed-loop control of the brushless DC motor is carried out. Undervoltage and overvoltage detections are performed to ensure the safety of the power supply voltage. When overcurrent or short-circuit is detected, the power supply is immediately cut off to protect the motor and the control system. The voltage fluctuation of the motor power supply is monitored, abnormalities are detected in a timely manner, and protection measures are triggered. Specifically, undervoltage and overvoltage detections are performed, and corresponding protection measures are taken. The temperature of the motor and its control system is monitored. When overheating occurs, the relevant control module will reduce the speed of the motor, that is, reduce its operating power until the temperature returns to the normal threshold. Otherwise, the speed will continue to decrease until it finally stops running. The speed and rotor position of the motor are measured. The motor speed and rotor position are deduced based on the data detected by the current monitoring module, and the next accurate drive signal is output to drive the motor rotor to rotate smoothly to the next position. The motor position and speed are monitored to ensure that they do not exceed the set range. Abnormal monitoring and processing are carried out for stall, phase loss, and blocked rotation, and measures are taken when abnormalities are detected. The vibration condition of the motor is monitored, potential problems are detected in a timely manner, and corresponding preventive measures are taken. The drive information of the brushless DC motor is controlled through networking using RS485, and centralized power supply processing is provided. In terms of energy-saving control and optimization, the drive speed, braking, and rotation direction of the motor are adjusted. The operating state of the motor is continuously monitored, and measures are taken when a fault occurs. The motor speed and torque are controlled by changing the duty cycle of the PWM signal, the current and magnetic field of the motor are precisely controlled, and the SVPWM wave is used to output a three-phase sine wave voltage to reduce torque ripple and current harmonics. AI and machine learning technologies are used to dynamically adjust the control strategy to achieve the optimal energy-saving effect. The operating parameters are adjusted according to the actual load of the motor to avoid unnecessary energy consumption. The motor is started when needed and stopped when not needed to further reduce energy consumption.

[0094] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

[0095] Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include known common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and examples are only to be considered as exemplary, and the true scope of the present disclosure is pointed out by the following claims.

Claims

1. An energy-saving control device driven by a brushless DC motor, characterized in that: It includes a central data control module, a PFC module, a power control module, a signal control module, a current monitoring module, a current detection module, a voltage monitoring module, a voltage detection module, a temperature monitoring module, a thermal protection module, a speed / position measurement module, an abnormality monitoring module, a vibration monitoring module, a position detection module, an auxiliary communication module, a brushless DC motor precision control module, a fault protection module, a pulse width modulation control module, a FOC control module, a sine wave control module, and a motor drive energy-saving control module. The central data control module is bidirectionally connected to the PFC module, the central data control module is bidirectionally connected to the power control module, the power control module is bidirectionally connected to the signal control module, the central data control module is bidirectionally connected to the current monitoring module, the current monitoring module is bidirectionally connected to the current detection module, the central data control module is bidirectionally connected to the voltage monitoring module, the voltage monitoring module is bidirectionally connected to the voltage detection module, and the central data control The module is bidirectionally connected to the temperature monitoring module, the temperature monitoring module is bidirectionally connected to the thermal protection module, the central data control module is bidirectionally connected to the speed / position measurement module, the speed / position measurement module is bidirectionally connected to the position detection module, the central data control module is bidirectionally connected to the abnormality monitoring module, the central data control module is bidirectionally connected to the brushless DC motor precision control module, the central data control module is bidirectionally connected to the vibration monitoring module, the signal control module is bidirectionally connected to the auxiliary communication module, the abnormality monitoring module is bidirectionally connected to the brushless DC motor precision control module, the brushless DC motor precision control module is bidirectionally connected to the fault protection module, the central data control module is bidirectionally connected to the pulse width modulation control module, the pulse width modulation control module is bidirectionally connected to the FOC control module, the FOC control module is bidirectionally connected to the sine wave control module, and the sine wave control module is bidirectionally connected to the motor drive energy-saving control module; The central data control module is used to centrally store and manage the collected data when the brushless DC motor is driven; The PFC module is used to increase the power factor to 1, reduce the loss of reactive power and make full use of the input power; The power control module is used to convert the direct current provided by the power supply into alternating current to control the electric energy required by the motor; The signal control module is used to control and process the brushless DC motor drive signal; The current monitoring module is used to monitor the current of the motor winding and perform real-time feedback processing on the current information; The current detection module is used to monitor the overcurrent and short-circuit protection mechanism of the motor current, estimate the rotor position and speed, and perform FOC closed-loop control of the brushless motor. The voltage monitoring module is used to monitor the fluctuation of the motor power supply voltage; The voltage detection module is used to perform undervoltage and overvoltage detection on the motor to ensure that the power supply voltage is within a safe range; The temperature monitoring module is used to monitor the temperature of the motor and its control system; The thermal protection module protects the motor from overheating. When overheating occurs, the relevant control module will reduce the speed of the motor, that is, reduce its operating power until the temperature returns to the normal threshold, otherwise it will continue to reduce the speed until it finally stops running; The speed / position measurement module is used to measure the speed and rotor position of the motor, calculate the motor speed and rotor position according to the data detected by the current monitoring module, and output the next accurate driving signal to drive the motor rotor to rotate smoothly to the next position; The abnormality monitoring module is used to monitor the position information and speed of the motor, and perform abnormal monitoring and processing on stall, phase loss and stall; The vibration monitoring module is used to monitor the vibration of the motor and detect motor imbalance and bearing damage problems; The position detection module is used to detect the rotor position of the brushless DC motor; The auxiliary communication module is used for networking control using RS485; The brushless DC motor precision control module regulates the driving speed, braking, and forward and reverse rotation of the brushless DC motor; The fault protection module is used to monitor the running status of the motor and take timely measures when a fault occurs; The pulse width modulation control module is used to control the speed and torque of the motor by changing the duty cycle of the PWM signal, so as to maintain a stable control effect when the load changes greatly; The FOC control module is used to accurately control the current and magnetic field of the motor to achieve high-performance control of the motor; The sine wave control module is used to output a three-phase sine wave voltage using an SVPWM wave, and the motor phase current is a sine wave current; The motor drive energy-saving control module is used for adaptive and predictive control, using AI and machine learning technology to dynamically adjust strategies based on real-time and historical data of the motor.

2. The energy-saving control device driven by a brushless DC motor according to claim 1, characterized in that: The current detection module includes an overcurrent protection unit and a short-circuit protection unit, and the overcurrent protection unit is bidirectionally connected to the short-circuit protection unit: The overcurrent protection unit is used to monitor whether the current of the motor exceeds the rated value when it is working, and can quickly cut off the power supply when the current exceeds the set value; The short-circuit protection unit is used to detect whether there is a short-circuit fault in the motor circuit, and immediately cut off the power supply when a short-circuit fault occurs to prevent further damage.

3. The energy-saving control device driven by a brushless DC motor according to claim 2, characterized in that: The voltage detection module includes an undervoltage detection unit and an overvoltage detection unit, and the undervoltage detection unit is bidirectionally connected to the overvoltage detection unit; The undervoltage detection unit is used to monitor whether the power supply voltage is lower than the set safety threshold value, and will trigger a protection mechanism when the voltage is lower than the set value to cut off the motor power supply or reduce the motor power; The overvoltage detection unit is used to monitor whether the power supply voltage is too high. When the voltage exceeds the set value, protective measures will be taken to cut off the power supply and adjust the voltage.

4. The energy-saving control device driven by a brushless DC motor according to claim 3, characterized in that: The abnormality monitoring module includes a position monitoring unit and an overspeed monitoring unit, and the position monitoring unit is bidirectionally connected with the overspeed monitoring unit: The position monitoring unit is used to monitor the position information of the motor to see whether the position of the motor exceeds a set range; The overspeed monitoring unit is used to monitor the speed information of the motor and whether the speed exceeds the set range. Position and overspeed monitoring: used to monitor the position information and speed of the motor to see whether it exceeds the set range.

5. The energy-saving control device driven by a brushless DC motor according to claim 4, characterized in that: The fault protection module is bidirectionally connected to a driving module protection module, and the driving module protection module includes a control voltage undervoltage lockout unit, an overheat protection unit, an overcurrent protection unit, and a circuit breaker protection unit.

6. The energy-saving control device driven by a brushless DC motor according to claim 5, characterized in that: The motor drive energy-saving control module includes an adaptive control unit and a predictive control unit, and the adaptive control unit is bidirectionally connected to the predictive control unit; The adaptive control unit is used to perform adaptive control through artificial intelligence and machine learning technology, and adjust the control strategy in real time according to the actual operating conditions of the motor to achieve the best energy-saving effect; The prediction control unit predicts the future operating state by analyzing the historical operating data of the motor and adjusts the control strategy in advance to reduce energy consumption.

7. The energy-saving control device driven by a brushless DC motor according to claim 6, characterized in that: The motor drive energy-saving control module is bidirectionally connected to a load matching module, and the load matching module is used to adjust the operating parameters of the motor according to the actual load condition of the motor.

8. The energy-saving control device driven by a brushless DC motor according to claim 7, characterized in that: The motor drive energy-saving control module is bidirectionally connected to an intermittent operation module, and the intermittent operation module starts the motor when needed and stops the motor when not needed.

9. The energy-saving control device for brushless DC motor drive according to claim 8, characterized in that: The rotation speed / position measurement module includes a photoelectric encoding module and a magnetic encoding module.

10. The energy-saving control device for brushless DC motor drive according to claim 9, characterized in that: The auxiliary communication module includes a communication unit and a power supply unit, and the communication unit is bidirectionally connected to the power supply unit; The communication unit is used to transmit the driving information of the brushless DC motor through wireless signals, and to control the driving of the brushless DC motor through remote signal data; The power supply unit is used for centralized power supply processing for driving the brushless DC motor.

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