Rotating speed adjustable inductive motor and control system thereof

Abstract

The invention discloses a rotating speed adjustable inductive motor and a control system thereof, and belongs to the technical field of inductive motors. The motor comprises a motor body, a cooling fan is arranged at one end of the motor body, a transmission is arranged at the other end of the motor body, a driving shaft penetrates through the middle of the transmission, a liquid connection box is arranged at the top of one end of the motor body, and multiple sets of cooling fins are arranged on the outer wall of the motor body; a cooling liquid circulation system constructed by the transmission assembly is used for efficiently dissipating heat of the motor body, the efficiency is improved by optimizing a flowing path and increasing the heat dissipation area, meanwhile, a heat dissipation fan accelerates air flowing, heat far-away emission and rapid diffusion are enhanced, the stability of the motor is improved, and the service life of the motor is prolonged; the central control unit comprehensively monitors the state of the motor, achieves sectional operation and stopping through load risk analysis and multi-mode regulation and control, achieves extreme regulation and control of heat dissipation, and improves the operation efficiency and the energy-saving effect of the motor.

Description

Technical Field

[0001] The invention relates to the technical field of inductive motors, and in particular to an inductive motor with adjustable speed and a control system thereof. Background Art

[0002] With the rapid development of modern industry and technology, automation and intelligence have penetrated into all walks of life. As a key transmission equipment, the inductive motor continuously supplies power to many automation systems and can be regarded as the cornerstone of industrial development. However, with the acceleration of technological iteration, the original driving mode has shown its shortcomings in the face of the growing demand for intelligence.

[0003] In many industry scenarios, the load is constant but the speed regulation demand is extensive and long-lasting, which brings great challenges to traditional variable speed motors. Taking common operating conditions as an example, general variable speed motors can maintain stable operation above 25HZ, but once the frequency drops below 25HZ, disadvantages arise, power is weak, temperature rises sharply, and even "strikes" directly at lower frequencies; the current common solution is to directly enhance the power configuration, but this is undoubtedly a poison to quench thirst. Although it guarantees the power supply when operating at full Hz, it runs counter to energy conservation and consumes a large amount of excess energy, which is contrary to the current green development concept advocated.

[0004] Focusing on specific industry equipment, such as water pumps, their operating characteristics are particularly special. When the water pump is working, the head is closely related to the flow rate and the motor speed. Usually, when the speed is fixed, the head and flow rate are relatively fixed. In many actual application scenarios, there is an urgent need for flexible regulation of the water pump flow rate. However, once the speed is changed rashly, the head will change immediately, resulting in the inability to accurately deliver the liquid to the predetermined location, seriously affecting the system operation effect.

[0005] In addition, variable-speed motors are generally caught in a dilemma: when running at full load Hz, the power is strong enough to cope with various working conditions; but when the frequency is reduced and the load remains unchanged, the motor's power torque drops drastically, making it impossible to achieve frequent and smooth switching between ultra-low speed and ultra-high speed for a long time, which greatly limits the expansion of its application scenarios and the improvement of operating efficiency.

[0006] To sum up, in order to break through the technical barriers that hinder industrial upgrading, it is imperative to develop a speed-adjustable sensored motor and its control system, which can not only accurately adapt to the complex and changeable speed regulation requirements, but also ensure stable and efficient operation, and fully meet the demands of various industries to move towards intelligence and energy saving. Summary of the invention

[0007] The object of the present invention is to provide a speed-adjustable inductive motor and a control system thereof to solve the problems raised.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: a speed-adjustable inductive motor and its control system, comprising a motor body, a cooling fan is arranged at one end of the motor body, a transmission is arranged at the other end of the motor body, a drive shaft is arranged through the middle of the transmission, a liquid connection box is arranged at the top of one end of the motor body, a plurality of groups of cooling fins are arranged on the outer wall of the motor body, a liquid storage cavity and a micro pump are embedded in the inner wall of the outer peripheral wall of the transmission, and a speed sensor connected to the drive shaft is arranged on the inner wall of the end face of the transmission;

[0009] A heat dissipation bracket is arranged above the liquid connection box, a plurality of groups of fin tubes are arranged at the bottom of the heat dissipation bracket close to the motor body, a control top box is arranged on the top of the heat dissipation bracket, a voltage sensor and a central control unit are arranged inside the control top box, a plurality of groups of box covers are arranged on the top of the control top box, and temperature sensors are embedded on the inner walls of the control top box and the motor body.

[0010] Furthermore, a sealing sleeve connected to the cooling fan is provided on the inner wall of one end of the motor body, and a plurality of groups of inner rib tubes are arranged in a circular array on the outer periphery of the sealing sleeve. One end of the cooling fin is connected to the liquid connection box, and the other end of the cooling fin is provided with a liquid pipe valve and an air pipe valve connected to the transmission, and the air pipe valve connects the cooling fan and the air jet port.

[0011] Furthermore, upper liquid pipes are symmetrically arranged on both sides of the liquid connection box, a lower liquid pipe is arranged at one end of the liquid connection box away from the cooling fan, and a cushion sleeve which is sleeved with the cooling bracket is arranged on the top of the liquid connection box.

[0012] Furthermore, a connecting plate is provided at one end of the transmission away from the motor body, a sealing sleeve 2 is provided at one end of the transmission extending into the motor body, and the sealing sleeve 2 is connected to the drive shaft, a jet port facing the heat dissipation bracket is provided at the top of one end of the transmission, and a plurality of liquid outlet valves, liquid inlet valves and air inlet pipe ports are provided on the edge of one end of the transmission.

[0013] Furthermore, a docking box is provided at the bottom of the heat dissipation bracket, and multiple groups of upper sleeves and lower sleeves are provided inside the docking box. The fin tubes are distributed at the bottom of both sides of the heat dissipation bracket, and conduits are provided at both ends of the fin tubes.

[0014] A control system for a speed-adjustable inductive motor includes a central control unit, wherein a motor transport acquisition module, a transport data analysis module, a load risk module and a multi-mode control core are arranged inside the central control unit:

[0015] The motor transport acquisition module collects the operation-related data of the inductive motor, obtains the body transport damage parameters and body comprehensive temperature parameters, and sends them to the transport data analysis module and the load risk module respectively;

[0016] After receiving the airframe transport damage parameters, the transport data analysis module immediately analyzes them, generates the equilibrium speed point JZ and the equilibrium consumption point JH, and sends them to the load risk module;

[0017] After receiving the comprehensive temperature parameters of the body, the balanced speed point JZ and the balanced consumption point JH, the load risk module analyzes the comprehensive temperature parameters of the body to generate the balanced electrical cost point value DBJ and the balanced control cost point value KBJ, and combines the rectangular coordinate system to substitute the balanced electrical cost point value DBJ, the balanced control cost point value KBJ, the balanced speed point JZ and the balanced consumption point JH into it, generates relevant control signals, and sends them to the multi-mode control core.

[0018] Furthermore, the transport data analysis module analyzes the body transport and damage parameters, obtains the total cycle time from the beginning of the operation of the inductive motor to the end of the last set of data collection, marks it as the transport cycle, divides the transport cycle evenly according to the total number of collected data, obtains the balanced sub-cycle, averages the collected data in each set of balanced sub-cycles, and obtains the balanced cycle point J.

[0019] Furthermore, the machine body operation loss parameters include the speed value of the connection between the drive shaft and the rotor in the motor body, and the power consumption value only about the rotor operation circuit provided by the external power supply for the operation of the inductive motor. The speed value and the power consumption value are both operated according to the equilibrium cycle point J generation method to obtain the equilibrium speed point JZ and the equilibrium consumption point JH.

[0020] Furthermore, the load risk module analyzes the comprehensive temperature parameters of the machine body, and the comprehensive temperature parameters of the machine body include the electrical cost temperature value and the control cost temperature value. The electrical cost temperature value and the control cost temperature value are operated according to the balanced weekly point J generation method to obtain the balanced electrical cost point value DBJ and the balanced control cost point value KBJ. Based on this, a rectangular coordinate system is established with the generation time of the balanced weekly point J as the X-axis and the data value as the Y-axis, and the balanced speed point JZ, the balanced consumption point JH, the balanced electrical cost point value DBJ and the balanced control cost point value KBJ are plotted in turn in the form of point-by-point connection. The system is controlled on a rectangular coordinate system, the pre-stored stage range value is retrieved from the central control unit, and it is plotted in a continuous manner on the rectangular coordinate system in sequence, and the area on the rectangular coordinate system where the four groups of line curves conform to the stage range value according to the time process is marked as a turning point, and the corresponding sequence of control schemes of the inductive motor is matched according to the stage range value of the turning point, and a control signal is generated according to the scheme sequence, and the generated control signal is sent to the multi-mode control core, and the multi-mode control core controls the operation mode of the inductive motor according to the corresponding control signal.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention is a coolant circulation system composed of components such as a transmission, which realizes efficient heat dissipation of the motor body. The coolant continuously flows in the circulation pipeline around the motor, absorbs and takes away the heat generated by the motor operation, effectively reduces the temperature of the motor, and improves its operating stability and life. The heat dissipation structure not only increases the heat dissipation area of ​​the coolant, but also improves the heat dissipation efficiency by optimizing the flow path of the coolant; the synchronous start-up of the heat dissipation fan forms a one-way heat exhaust trajectory, effectively accelerates the flow of the motor body and the air around it, and further improves the heat dissipation effect. At the same time, the air duct and the air jet design inside the heat dissipation fan can directly spray part of the airflow onto the heat dissipation fins and the top of the motor body, thereby enhancing the airflow disturbance in the heat dissipation area and facilitating the rapid diffusion of heat.

[0023] 2. The present invention realizes comprehensive monitoring and intelligent control of the operating status of the inductive motor through the comprehensive collaboration of the motor transport collection module, the transport data analysis module, the load risk module and the multi-mode control core. According to the analysis results of the load risk module and the control of the multi-mode control core, the motor can adopt a segmented operation + stop operation mode, while maintaining the required speed range, it realizes the ultimate control and heat dissipation of the motor running heat, further improving the motor's operating efficiency and energy-saving effect.

[0024] 3. The present invention is that the system can intelligently match and regulate the operation plan of the motor according to the actual operation status of the motor and the external environmental conditions, which not only meets the needs of different equipment for the motor, but also improves the adaptability and flexibility of the motor. In the frequency modulation range with sufficient torque, the system adopts a linear drive method to ensure the operation efficiency of the motor. In the case of insufficient torque, it operates in a segmented mode to ensure that the operation efficiency from the maximum frequency to the minimum frequency is linear, thereby realizing an intelligent, efficient and precise operation mode. The heat dissipation circulation part is closely coordinated with the central control unit to realize intelligent heat dissipation control. According to the operation status of the motor and temperature monitoring data, the central control unit can adjust the circulation speed of the coolant and the speed of the heat dissipation fan in real time to ensure that the motor always remains in the optimal operating temperature range. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0027] Figure 2It is a structural schematic diagram of the motor body of the present invention;

[0028] Figure 3 It is a schematic diagram of the internal structure of the motor body of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the motor body and the liquid connection box of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the transmission of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the heat dissipation bracket of the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the heat dissipation bracket and the control top box of the present invention;

[0033] Figure 8 This is a rectangular coordinate system display diagram of the system data of the present invention.

[0034] Figure numerals: 1. Motor body; 101. Heat dissipation fin; 102. Sealing sleeve 1; 103. Liquid pipe valve; 104. Air pipe valve; 105. Inner rib tube; 2. Cooling fan; 3. Drive shaft; 4. Control top box; 401. Box cover; 5. Transmission; 501. Connecting plate; 502. Jet port; 503. Sealing sleeve 2; 6. Liquid connecting box; 601. Upper liquid pipe; 602. Lower liquid pipe; 603. Gasket; 7. Heat dissipation bracket; 701. Docking box; 702. Fin tube; 703. Conduit. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example 1: Please refer to Figure 1 - Figure 7As shown, this embodiment is a speed-adjustable inductive motor, comprising a motor body 1, a cooling fan 2 is arranged at one end of the motor body 1, a transmission 5 is arranged at the other end of the motor body 1, a driving shaft 3 is penetrated through the middle of the transmission 5, a liquid connection box 6 is arranged on the top of one end of the motor body 1, a plurality of groups of cooling fins 101 are arranged on the outer wall of the motor body 1, a liquid storage cavity and a micro pump are embedded in the inner wall of the outer peripheral wall of the transmission 5, and a speed sensor connected to the driving shaft 3 is arranged on the inner wall of the end face of the transmission 5; the inductive motor is connected to the external power supply wire through the control top box 4, and is started under the control of the external operator, and the motor body 1 performs load operation according to the regulation of the external operator.

[0037] A connecting plate 501 is provided at one end of the transmission 5 away from the motor body 1, a sealing sleeve 2 503 extending into the motor body 1 is provided at one end of the transmission 5, and the sealing sleeve 2 503 is sleeved with the drive shaft 3, a jet port 502 facing the heat dissipation bracket 7 is provided at the top of one end of the transmission 5, and a plurality of groups of liquid outlet valves, liquid inlet valves and air inlet pipe ports are provided on the edge of one end of the transmission 5.

[0038] The liquid storage chamber and the micro pump inside the transmission 5 are started at the same time. The micro pump extracts the coolant inside the liquid storage chamber. The inlet and outlet ends of the micro pump are connected to the liquid outlet valve and the liquid inlet valve through special pipes. The coolant is connected to the liquid pipe valve 103 through the liquid outlet valve. The liquid pipe valve 103 is provided with a circulation pipeline and a reflux pipeline. The coolant first enters the circulation management. The circulation pipeline is connected with multiple groups of heat dissipation fins 101, and the continuously injected coolant is dispersed inside each group of heat dissipation fins 101, so that the coolant flows from the other end of the heat dissipation fins 101 to one end until it is gathered at one end of the heat dissipation fins 101, and part of the coolant also enters the inner rib tube 105. Special pipelines are respectively provided at both ends of the inner rib tube 105 to connect the heat dissipation fins 101 and the liquid connection box 6, thereby forming a circulation pipeline as a whole around the motor body 1.

[0039] A heat dissipation bracket 7 is arranged above the liquid connection box 6, and a plurality of groups of fin tubes 702 close to the motor body 1 are arranged at the bottom of the heat dissipation bracket 7. A control top box 4 is arranged on the top of the heat dissipation bracket 7. A voltage sensor and a central control unit are arranged inside the control top box 4. A plurality of groups of box covers 401 are arranged on the top of the control top box 4, and temperature sensors are embedded on the inner walls of the control top box 4 and the motor body 1; upper liquid pipes 601 are symmetrically arranged on both sides of the liquid connection box 6, and a lower liquid pipe 602 is arranged at the end of the liquid connection box 6 away from the cooling fan 2, and a cushion cover 603 connected with the heat dissipation bracket 7 is arranged on the top of the liquid connection box 6.

[0040] The liquid connection box 6 is connected to the inner rib tube 105 and one end outlet of the heat dissipation tube sheet 101 through the upper liquid pipe 601, and the coolant flowing in the inner rib tube 105 and the heat dissipation tube sheet 101 and absorbing heat is guided upward, and is guided by the upper liquid pipe 601 to enter the fin tube 702. The two ends of the fin tube 702 are connected by the conduit 703, and the coolant absorbing heat is guided to flow along a fixed trajectory. The wall of the fin tube 702 is thin and exposed to the ambient air outside the motor body 1, which helps to guide the coolant absorbing heat inside to dissipate heat quickly. After the heat dissipation treatment, the coolant after heat dissipation flowing along the fin tube 702 is guided by part of the conduit 703 to flow back to the lower liquid pipe 602. The lower liquid pipe 602 is connected to one end of the return pipeline, and the other end of the return pipeline is connected to the liquid inlet valve, thereby forming a return pipeline as a whole. During the operation of the inductive motor, the coolant flows along a fixed trajectory through the heat source of the inductive motor, absorbs the heat of the heat source and guides it to dissipate.

[0041] A sealing sleeve 102 connected to the cooling fan 2 is arranged on the inner wall of one end of the motor body 1, and a plurality of groups of inner rib tubes 105 are arranged in a circular array on the outer periphery of the sealing sleeve 102. One end of the cooling fin 101 is connected to the liquid connection box 6, and the other end of the cooling fin 101 is provided with a liquid pipe valve 103 and an air pipe valve 104 connected to the transmission 5, and the air pipe valve 104 connects the cooling fan 2 and the air jet 502.

[0042] The heat dissipation fan is started synchronously with the inductive motor. The heat dissipation fan rotates to extract the peripheral air at one end of the motor body 1, causing one end of the motor body 1 to form a continuous negative pressure point, causing the other end of the motor body 1 and the upper and lower surrounding cold air to flow into the heat dissipation fan 2, and be discharged from one end of the heat dissipation fan 2, forming a one-way heat dissipation trajectory. During the operation of the heat dissipation fan, the heat dissipated from the inner rib tube 105, the heat dissipation tube sheet 101 and the fin tube 702 are all sucked and discharged far away by the heat dissipation fan 2. At the same time, an air guide duct is arranged inside the heat dissipation fan 2, and the air guide duct is connected to one end of the air pipe valve 104, and the other end of the air pipe valve 104 is connected to the air inlet and the air jet 502, forming an internal air transmission pipeline, causing part of the air flow to enter the air jet 502, and the air jet 502 guides it to spray toward the heat dissipation fins and the top of the motor body 1, and the air flow in the connection area of ​​the heat dissipation bracket 7 and the motor body 1, further guiding the heat generated during the operation of the inductive motor to accelerate the diffusion process.

[0043] A docking box 701 is provided at the bottom of the heat dissipation bracket 7 , and multiple groups of upper sleeves and lower sleeves are provided inside the docking box 701 . Fin tubes 702 are distributed at the bottom of both sides of the heat dissipation bracket 7 , and conduits 703 are provided at both ends of the fin tubes 702 .

[0044] Example 2: Please refer to Figure 1 - Figure 8As shown, this embodiment is a control system for a speed-adjustable inductive motor, including a central control unit, in which a motor transport collection module, a transport data analysis module, a load risk module and a multi-mode control core are arranged:

[0045] At the beginning of the operation of the inductive motor, the central control unit generates an operation monitoring instruction and sends the operation monitoring instruction to the motor transport acquisition module. After receiving the operation monitoring instruction, the motor transport acquisition module immediately collects the operation-related data of the inductive motor, thereby obtaining the body transport damage parameter and the body comprehensive temperature parameter, and sends them to the transport data analysis module and the load risk module respectively; wherein, the body comprehensive temperature parameter is collected by the temperature sensors arranged on the inner wall of the motor body 1 and the inner wall of the control top box 4, and the body transport damage parameter is collected by the speed sensor and the voltage sensor;

[0046] After receiving the airframe transport damage parameters, the transport data analysis module immediately analyzes them, generates the equilibrium speed point JZ and the equilibrium consumption point JH, and sends them to the load risk module;

[0047] After receiving the comprehensive temperature parameters of the body, the balanced speed point JZ and the balanced consumption point JH, the load risk module analyzes the comprehensive temperature parameters of the body to generate the balanced electrical cost point value DBJ and the balanced control cost point value KBJ, and combines the rectangular coordinate system to substitute the balanced electrical cost point value DBJ, the balanced control cost point value KBJ, the balanced speed point JZ and the balanced consumption point JH into it, generates relevant control signals, and sends them to the multi-mode control core.

[0048] The transport data analysis module analyzes the airframe transport parameters, obtains the total cycle time from the beginning of the operation of the sensor motor to the end of the last set of data collection, marks it as the transport cycle, divides the transport cycle evenly according to the total number of collected data, obtains the equilibrium sub-cycle, averages the collected data in each set of equilibrium sub-cycles, and obtains the equilibrium cycle point J.

[0049] The machine body operation loss parameters include the speed value of the connection between the drive shaft 3 and the rotor inside the motor body 1, and the power consumption value only about the rotor operation circuit provided by the external power supply for the operation of the inductive motor. The speed value and the power consumption value are both operated according to the balanced cycle point J generation method to obtain the balanced speed point JZ and the balanced consumption point JH.

[0050] The load risk module analyzes the comprehensive temperature parameters of the body. The comprehensive temperature parameters of the body include the electrical temperature value and the control temperature value. The electrical temperature value and the control temperature value are operated according to the balanced weekly point J generation method to obtain the balanced electrical point value DBJ and the balanced control point value KBJ. Based on this, a rectangular coordinate system is established with the generation time of the balanced weekly point J as the X-axis and the data value as the Y-axis. The balanced speed point JZ, the balanced consumption point JH, the balanced electrical point value DBJ and the balanced control point value KBJ are plotted on the rectangular coordinate system in a point-by-point connection method in sequence. The pre-stored stage range value is retrieved from the central control unit and plotted on the rectangular coordinate system in a point-by-point continuous manner in sequence. The area where the four groups of line curves on the rectangular coordinate system meet the stage range value according to the time process is marked as a turning point. The corresponding inductive motor control scheme sequence is matched according to the stage range value of the generated turning point, and a control signal is generated according to the scheme sequence. The generated control signal is sent to the multi-mode control core, and the multi-mode control core controls the operation mode of the inductive motor according to the corresponding control signal.

[0051] There are two groups of stage range values, and the turning points are as follows: Figure 8 As shown, two groups of corresponding control signals are generated according to three groups of stage range values ​​from bottom to top, and they are marked as control signal X1 and control signal X2 from bottom to top. When generating corresponding control signals, the multi-mode control core starts the corresponding inductive motor control scheme sequence according to the matching control signal. The inductive motor does not reduce the motor speed, but implements the segmented operation + stop operation mode. For example, the speed of the rotor in the motor body 1 is 2000 revolutions per minute, and now only 1000 revolutions per minute are needed. However, at this time, the head in some environments is not enough. For the insufficient head, the details are as follows:

[0052] When the multi-mode control core receives the control signal X1, the multi-mode control core adjusts the operation of the motor body 1 according to the inductive motor scheme sequence 1 corresponding to the control signal X1, and adopts a two-stage operation mode, running for 15 seconds and then stopping for 15 seconds, and running for 15 seconds and then stopping for 15 seconds, to ensure that the required speed range is controlled within each minute, and during intermittent operation, the heat generated by the operation of the motor body 1 is extremely regulated and dissipated through the linkage mode of liquid heat conduction and wind heat dissipation.

[0053] When the multi-mode control core receives the control signal X2, the multi-mode control core adjusts the operation of the motor body 1 according to the inductive motor scheme sequence 1 corresponding to the control signal X1, and adopts a four-stage operation mode, running for 7.5 seconds and then stopping for 7.5 seconds, and running for 7.5 seconds and then stopping for 7.5 seconds, to ensure that the required speed range is controlled within each minute to meet the operation requirements. More segmented operation modes can also be set according to time, which are specifically matched and adjusted according to the inductive motor installation equipment.

[0054] The solution to the problem of some inductive motors with insufficient low-frequency torque is to use linear drive within the frequency modulation range where the torque is sufficient. For example, when the operating speed is above 25HZ and meets the operating requirements, no adjustment is made; when it is lower than 25HZ and the torque is insufficient, a segmented mode is used for operation, with more than two or more segments; for example, a speed of 2000 rpm at 25HZ can meet the operating requirements, but when the speed is lower than 25HZ and cannot meet the operating requirements, we use a frequency of 25HZ or above for segmented operation to ensure that the operating efficiency is linear from the maximum Hz to the minimum Hz; thereby achieving intelligent, efficient and precise operation. The above-mentioned operation mode is not limited to this, and is specifically regulated and processed according to the needs of the equipment installed with the inductive motor and the environmental adaptation.

[0055] In combination with Example 1 and Example 2, the present invention utilizes a coolant circulation system constructed using a transmission 5 assembly to efficiently dissipate heat from the motor body 1, and improves efficiency by optimizing the flow path and increasing the heat dissipation area. At the same time, a heat dissipation fan accelerates air flow, enhances heat dissipation and rapid diffusion, and improves motor stability and life.

[0056] The central control unit comprehensively monitors the motor status, realizes segmented operation + stop through load risk analysis and multi-mode control, and effectively controls heat dissipation to improve motor operation efficiency and energy saving effects.

[0057] The system intelligently matches the motor operation plan to adapt to different equipment and environmental requirements, adopts linear or segmented mode drive to ensure operating efficiency, combines the heat dissipation cycle with the central control unit to closely adjust the coolant circulation and fan speed in real time, maintains the optimal operating temperature of the motor, and realizes intelligent, efficient and precise operation.

[0058] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Related accessories include couplings, screws, gears, gaskets and other commonly used mechanical connection components in this field, but are not limited thereto. They are replaced and adapted according to actual use.

[0060] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A speed-adjustable inductive motor, comprising a motor body (1), characterized in that: A cooling fan (2) is arranged at one end of the motor body (1), a transmission (5) is arranged at the other end of the motor body (1), a drive shaft (3) is arranged through the middle of the transmission (5), a liquid connection box (6) is arranged at the top of one end of the motor body (1), a plurality of groups of cooling fins (101) are arranged on the outer wall of the motor body (1), a liquid storage cavity and a micro pump are embedded in the inner wall of the outer peripheral wall of the transmission (5), a speed sensor connected to the drive shaft (3) is arranged on the inner wall of the end face of the transmission (5), and the speed sensor is installed inside the motor body (1). A heat dissipation bracket (7) is arranged above the liquid connection box (6); a plurality of groups of finned tubes (702) close to the motor body (1) are arranged at the bottom of the heat dissipation bracket (7); a control top box (4) is arranged on the top of the heat dissipation bracket (7); a voltage sensor and a central control unit are arranged inside the control top box (4); a plurality of groups of box covers (401) are arranged on the top of the control top box (4); and temperature sensors are embedded on the inner walls of the control top box (4) and the motor body (1).

2. The speed-adjustable inductive motor according to claim 1, characterized in that: A sealing sleeve (102) connected to a cooling fan (2) is provided on the inner wall of one end of the motor body (1); a plurality of groups of inner rib tubes (105) are arranged in a circular array on the outer periphery of the sealing sleeve (102); one end of the cooling fin (101) is connected to a liquid connection box (6); and the other end of the cooling fin (101) is provided with a liquid pipe valve (103) and an air pipe valve (104) connected to a transmission (5).

3. The speed-adjustable inductive motor according to claim 1, characterized in that: Upper liquid pipes (601) are symmetrically arranged on both sides of the liquid connection box (6), a lower liquid pipe (602) is arranged at one end of the liquid connection box (6) away from the heat dissipation fan (2), and a cushion sleeve (603) is arranged on the top of the liquid connection box (6) and is sleeved with the heat dissipation bracket (7).

4. The speed-adjustable inductive motor according to claim 1, characterized in that: A connecting plate (501) is arranged at one end of the transmission (5) away from the motor body (1); a sealing sleeve (503) extending into the interior of the motor body (1) is arranged at one end of the transmission (5); the sealing sleeve (503) is sleeved with the drive shaft (3); and an air jet (502) facing the heat dissipation bracket (7) is arranged at the top of one end of the transmission (5).

5. The speed-adjustable inductive motor according to claim 1, characterized in that: A docking box (701) is provided at the bottom of the heat dissipation bracket (7), and a plurality of groups of upper sleeves and lower sleeves are provided inside the docking box (701). The fin tubes (702) are distributed at the bottom of both sides of the heat dissipation bracket (7), and guide tubes (703) are provided at both ends of the fin tubes (702).

6. A control system for a speed-adjustable inductive motor, used for the speed-adjustable inductive motor according to any one of claims 1 to 5, characterized in that: It includes a central control unit, which is internally provided with a motor transport acquisition module, a transport data analysis module, a load risk module and a multi-mode control core: The motor transport acquisition module collects the operation-related data of the inductive motor, obtains the body transport damage parameters and body comprehensive temperature parameters, and sends them to the transport data analysis module and the load risk module respectively; After receiving the airframe transport damage parameters, the transport data analysis module immediately analyzes them, generates the equilibrium speed point JZ and the equilibrium consumption point JH, and sends them to the load risk module; After receiving the comprehensive temperature parameters of the body, the balanced speed point JZ and the balanced consumption point JH, the load risk module analyzes the comprehensive temperature parameters of the body to generate the balanced electrical cost point value DBJ and the balanced control cost point value KBJ, and combines the rectangular coordinate system to substitute the balanced electrical cost point value DBJ, the balanced control cost point value KBJ, the balanced speed point JZ and the balanced consumption point JH into it, generates relevant control signals, and sends them to the multi-mode control core.

7. The speed-adjustable inductive motor and control system thereof according to claim 6, characterized in that: The transport data analysis module analyzes the body transport and wear parameters, obtains the total cycle length from the beginning of the operation of the sensor motor to the end of the last set of data collection, marks it as the transport cycle, divides the transport cycle evenly according to the total number of collected data, obtains the balanced sub-cycle, averages the collected data in each group of balanced sub-cycles, and obtains the balanced cycle point J.

8. The control system of a speed-adjustable inductive motor according to claim 7, characterized in that: The machine body operation loss parameters include the rotation speed value of the connection between the drive shaft (3) and the rotor inside the motor body (1), and the power consumption value only about the rotor operation circuit provided by the external power supply for the operation of the inductive motor. The rotation speed value and the power consumption value are both operated according to the balanced cycle point J generation method to obtain the balanced speed point JZ and the balanced consumption point JH.

9. The control system of a speed-adjustable inductive motor according to claim 7, characterized in that: The load risk module analyzes the comprehensive temperature parameters of the body, the comprehensive temperature parameters of the body include the electrical temperature value and the control temperature value, the electrical temperature value and the control temperature value are operated according to the balanced weekly point J generation mode, and the balanced electrical point value DBJ and the balanced control point value KBJ are obtained. Based on this, a rectangular coordinate system is established with the generation time of the balanced weekly point J as the X-axis and the data value as the Y-axis, and the balanced speed point JZ, the balanced consumption point JH, the balanced electrical point value DBJ and the balanced control point value KBJ are sequentially plotted on the rectangular coordinate system in a point-by-point connection mode, the pre-stored stage range value is retrieved from the central control unit, and it is sequentially plotted on the rectangular coordinate system in a point-by-point continuous mode, and the area where the four groups of line curves on the rectangular coordinate system meet the stage range value according to the time process is marked as a turning point, the corresponding inductive motor control scheme sequence is matched according to the stage range value of the generated turning point, and a control signal is generated according to the scheme sequence, and the generated control signal is sent to the multi-mode control core, and the multi-mode control core controls the operation mode of the inductive motor according to the corresponding control signal.

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