CN108471198B - Control method, device and system for switched reluctance motor and controller - Google Patents
Control method, device and system for switched reluctance motor and controller Download PDFInfo
- Publication number
- CN108471198B CN108471198B CN201810388090.4A CN201810388090A CN108471198B CN 108471198 B CN108471198 B CN 108471198B CN 201810388090 A CN201810388090 A CN 201810388090A CN 108471198 B CN108471198 B CN 108471198B
- Authority
- CN
- China
- Prior art keywords
- reluctance motor
- switched reluctance
- control
- stator core
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/20—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil wherein the cooling medium vaporises within the machine casing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/0004—Control strategies in general, e.g. linear type, e.g. P, PI, PID, using robust control
- H02P23/0018—Control strategies in general, e.g. linear type, e.g. P, PI, PID, using robust control using neural networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/04—Arrangements or methods for the control of AC motors characterised by a control method other than vector control specially adapted for damping motor oscillations, e.g. for reducing hunting
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/08—Reluctance motors
Abstract
The embodiment of the invention discloses a switch reluctance motor and a control method, a device and a system thereof, wherein the switch reluctance motor comprises: a stator core, a sealed housing, and a condenser; the sealing shell is sleeved outside the stator core; the inside of the sealed shell is filled with evaporative cooling liquid, and the stator core is soaked in the evaporative cooling liquid; the upper part of the sealing shell is provided with a liquid storage tank and a condenser, the flow of cooling medium in the condenser is adjustable, the non-material damping coefficient in the sealing shell is changed, the suppression of stator core vibration during the running of the switched reluctance motor is realized, and the effects of vibration reduction and noise reduction are achieved.
Description
Technical Field
The present disclosure relates to the field of motor control technologies, and in particular, to a switched reluctance motor, and a control method, device, and system thereof.
Background
The switch reluctance motor has simple structure, firmness, simple manufacturing process and low cost, can be suitable for various severe environments, has wide speed regulation range and high efficiency. Various outstanding advantages have made switched reluctance motors a powerful competitor to ac motor drive systems, dc motor drive systems, and permanent magnet brushless dc motor drive systems. However, since the switched reluctance motor has a double salient structure, the most main disadvantages of torque pulsation, large vibration, large noise and the like are unavoidable.
Therefore, how to reduce vibration and noise of the switched reluctance motor is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of this, the embodiments of the present application provide a switched reluctance motor, and a control method, apparatus and system thereof, which can solve the problems of vibration and noise in the operation process of the switched reluctance motor in the prior art.
The embodiment of the application provides a switched reluctance motor, includes: a stator core, a sealed housing, and a condenser;
the sealing shell is sleeved outside the stator core;
the inside of the sealed shell is filled with evaporative cooling liquid, and the stator core is soaked in the evaporative cooling liquid;
the upper part of the sealing shell is provided with a liquid storage tank and a condenser, and the flow of cooling medium in the condenser is adjustable.
Optionally, the condenser includes: a flow regulating valve;
the flow regulating valve is used for regulating the flow of the cooling medium.
The control method of the switched reluctance motor provided by the embodiment of the application is applied to the switched reluctance motor described in any embodiment; the method comprises the following steps:
acquiring an on angle and an off angle of the switched reluctance motor to obtain a switch angle combination;
inputting the switch angle combination into a control model obtained in advance to obtain a control flow corresponding to the switch angle combination;
and adjusting the flow rate of the cooling medium to the control flow rate to reduce the amplitude of the stator core.
Optionally, inputting the switch angle combination into a control model obtained in advance to obtain a control flow corresponding to the switch angle combination, and before the step of obtaining the control flow corresponding to the switch angle combination further includes:
training a neural network according to a pre-obtained training data set to obtain the control model;
the training data set comprises a plurality of groups of corresponding relations between switch angle combinations and control flow.
Optionally, the neural network is a feed-forward neural network.
The embodiment of the application provides a control device for a switched reluctance motor, which is applied to the switched reluctance motor in any embodiment; the device comprises: the device comprises an acquisition module, a determination module and an adjustment module;
the acquisition module is used for acquiring the on angle and the off angle of the switched reluctance motor to obtain a switch angle combination;
the determining module is used for inputting the switch angle combination into a control model obtained in advance to obtain control flow corresponding to the switch angle combination;
the adjusting module is used for adjusting the flow of the cooling medium to the control flow so as to reduce the amplitude of the stator core.
Optionally, the apparatus further includes: a training module;
the training module is used for training the neural network according to a preset training data set to obtain the control model;
the training data set comprises a plurality of groups of corresponding relations between switch angle combinations and control flow.
Optionally, the neural network is a feed-forward neural network.
The embodiment of the application provides a switch reluctance motor control system, including: a switched reluctance motor and a control unit;
the switched reluctance motor includes: a stator core and a condenser;
a sealing shell is sleeved outside the stator core;
the inside of the sealed shell is provided with evaporative cooling liquid, and the stator core is soaked in the evaporative cooling liquid;
the upper part of the sealing shell is provided with a condenser, and the flow of cooling medium in the condenser is adjustable;
the control unit is configured to perform the method for controlling a switched reluctance motor according to any of the above embodiments.
The embodiment of the application also provides a controller applied to the switched reluctance motor according to any of the above embodiments; the controller includes: a memory and a processor;
the memory is used for storing program codes;
the processor is configured to obtain the program code, and when the program code is executed by the processor, implement the method for controlling a switched reluctance motor according to any one of the foregoing embodiments.
Compared with the prior art, the application has at least the following advantages:
in the embodiment of the application, the stator core of the switch reluctance motor is soaked in the evaporative cooling liquid in the sealed shell, and the liquid storage tank and the condenser are further arranged on the upper portion of the sealed shell so as to regulate the temperature of the evaporative cooling liquid. The flow of cooling liquid in the condenser is adjustable, so that the temperature of the evaporative cooling liquid can be adjusted within a certain range, the non-material damping coefficient in the sealed shell is changed, the suppression of stator core vibration during the running of the switched reluctance motor is realized, and the effects of vibration reduction and noise reduction are achieved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a conventional SRM structure;
fig. 2 is a schematic structural diagram of a switched reluctance motor according to an embodiment of the present application;
FIG. 3 is a schematic flow chart of a control method of a switched reluctance motor according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a switched reluctance motor control device according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a switched reluctance motor control system according to an embodiment of the present application.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will clearly and completely describe the technical solution in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The current world faces the double crisis of energy shortage and environmental pressure, the shortage of primary energy such as petroleum and the like and the increasing problem of environmental conditions worldwide, and governments in various countries are forced to continuously strengthen the research and development of clean energy vehicles. Among them, the electric automobile, as the name implies, is an automobile driven by electricity to completely replace petroleum fuel, and takes absolute advantage in terms of environmental protection, cleaning, energy saving and the like compared with the traditional automobile using gasoline combustion as a power source. In the whole development and development process of electric automobiles, three major elements, namely a motor, an inverter and a storage battery, play a supporting role, and the progress of battery technology and inversion technology is quite remarkable, so that the motor (namely a driving motor) influencing the running performance and the combustion efficiency performance of the automobile has the problems.
At present, driving motors of electric automobiles mainly include direct current motors, asynchronous motors, permanent magnet brushless motors, switched reluctance motors and the like. Since the drive motor must be capable of being disposed in a small space between the automobile engine and the transmission, the in-vehicle drive motor is required to be compact, high-power, and high-efficiency. However, the rotating electric machines such as a direct current motor and an asynchronous motor adopting the electromagnetic induction principle are difficult to realize miniaturization; permanent magnet brushless motors are considered to be the most promising because of their small size and low weight, but suffer from the inherent disadvantages of high cost and easy demagnetization. The switch reluctance motor has the advantages of simple structure, firmness, simple manufacturing process and low cost, can be suitable for various severe environments, has wide speed regulation range and high efficiency, and has various outstanding advantages, so that the switch reluctance motor becomes a powerful competitor of an alternating current motor driving system, a direct current motor driving system and a permanent magnet brushless direct current motor driving system.
Referring to fig. 1, a schematic diagram of a switched reluctance motor according to the prior art is shown. When the control switches SI and S2 of the current of the A phase winding 2 'are closed, the A phase is electrified, the B phase and the C phase are not electrified, the A phase excitation generates a magnetic field, the magnetic flux of the motor is always closed along the path with minimum magnetic resistance, and the magnetic resistance of the magnetic circuit is minimum when the axis of the A phase magnetic pole is coincident with the axis of the magnetic pole a of the rotor 7', so that tangential pulling force is generated by the distorted magnetic force lines, the A-A 'is attempted to be coincident with the A-A', and finally the motor rotates to the position where the A-A 'is coincident with the A-A', and the rotation is stopped. Then, if the motor is to be continuously rotated, the B phase needs to be energized, and the a phase and the C phase are simultaneously deenergized, at this time, the magnetic field in the motor becomes a magnetic field with the B phase magnetic pole as the axis, and the motor rotor 7 'continues to rotate until the motor rotor is completely overlapped with the B-B'. Then the C phase is electrified, and the A phase and the B phase are powered off, at the moment, the magnetic field in the motor becomes a magnetic field taking the magnetic pole of the C phase as the axis, and the motor rotor 7 'continues to rotate until the motor rotor is completely overlapped with the C-C'. The cycle is repeated, and as long as the three-phase stator windings 2' are energized in sequence A-B-C-A-B- … …, the rotor 7' of the motor will always rotate in the same direction about the centerline of the rotating shaft 8 '.
The electromagnetic torque generated by the switch reluctance motor is different from the stable electromagnetic torque of the traditional AC and DC motors, the electromagnetic torque is of a pulsating nature, the corresponding magnetic tension force is tangential and radial, the tangential component of the magnetic tension force is used for pulling the motor to operate, and the motor is unstable to operate, deform and vibrate due to the pulsating nature, so that serious noise is generated. The radial component of the magnetic pull varies with the position of the rotor 7' and the current of the stator winding 2', thereby causing deformation and vibration of the motor stator core 1', which in turn generates more serious noise.
Therefore, the embodiment of the application provides a switch reluctance motor, a control method and a control device thereof, and the non-material damping coefficient of evaporative cooling liquid for soaking a stator core is adjusted to thoroughly inhibit and attenuate stator vibration, so that vibration and noise of the switch reluctance motor are eliminated, and the switch reluctance motor has important significance for obtaining good traction characteristics of an electric automobile and improving the steering stability and riding comfort of a vehicle system.
The following detailed description of the embodiments of the present application will be made with reference to the accompanying drawings, in order to make the above objects, features and advantages of the present application more comprehensible based on the above ideas.
Referring to fig. 2, the structure of a switched reluctance motor according to an embodiment of the present application is shown.
The embodiment of the application provides a switched reluctance motor, including: a stator core 10, a seal housing 30, and a condenser 20;
the stator core 10 is externally sleeved with a sealing shell 30;
the inside of the sealed shell 30 is filled with evaporative cooling liquid 31, and the stator core 10 is immersed in the evaporative cooling liquid 31;
the upper part of the sealed housing 30 is provided with a liquid storage tank 32 and a condenser 20, and the flow rate of the cooling medium in the condenser 20 is adjustable.
In the embodiment of the present application, the SRM stator is integrally sealed by the seal housing 30, the evaporative cooling liquid 31 is poured into the seal housing 30 to permeate through the entire stator core 10, and the condenser 20 is installed at the upper portion of the seal housing 30, and the flow rate of the cooling medium in the condenser 20 is adjustable.
When the SRM is operated, heat generated from the stator core 10 is transferred to the evaporative cooling liquid 31, so that the evaporative cooling liquid 31 boils. After the evaporative cooling liquid 31 evaporates into a gaseous state, the liquid rises to be separated from the liquid surface due to the reduction of the density, and continues to rise to be in contact with the condenser 20, and the gaseous evaporative cooling liquid 31 transfers heat to the condenser 20 to be liquefied, returns to a liquid state, and then drops back to the liquid surface. The heat generated by the stator core 10 is continuously transferred to the condenser 20, and then is entirely taken away by the cooling medium (such as cold air or cooling water) in the condenser 20. When the pressure inside the sealed housing 30 increases, part of the evaporative cooling liquid 31 can be pressed into the reservoir 32, and as part of the evaporative cooling liquid 31 enters the reservoir 32, the sealed cavity space above the liquid surface of the evaporative cooling liquid 31 increases, releasing the pressure in this space. The reservoir 32 acts to relieve pressure and protect the seal housing 30 from pressure explosions.
Because various liquids such as oil, water and the like have viscosity properties, the liquids all show viscosity with different degrees when flowing in containers such as pipelines, boxes, oil cavities, cylinder bodies and the like, and can play a role in damping and consume vibration energy, and the phenomenon is called non-material damping or viscous damping. When the stator vibrates during the operation of the SRM, the periphery of the stator core 10 is filled with the vapor-liquid two-phase vapor cooling liquid 31, and the vapor cooling liquid 31 is in a vapor-cooling cycle reciprocating motion state, has a certain flow speed, forms stronger non-material damping, the stator core 10 is subjected to stronger non-material damping force, the vibration of the stator core 10 is hindered, the vibration energy is consumed, the vibration development during the operation of the SRM is restrained, the vibration source is weakened, and the noise intensity is naturally and greatly reduced.
The inventors have found in the study that the flow rate of the cooling medium in the condenser 20 is adjustable, and thus the temperature of the evaporative cooling liquid 31 can be changed, and the dynamic viscosity of the gas-liquid two-phase flow of the evaporative cooling liquid 31 in the sealed housing 30 can be controlled, and the non-material damping coefficient corresponding to the dynamic viscosity can be changed. By adjusting the non-material damping coefficient of the evaporative cooling liquid in the sealed housing 30, vibration of the damping stator core 10 can be suppressed to the greatest extent, so that the stator amplitude output is minimized during operation of the SRM, vibration of the stator is suppressed, vibration and noise of the switched reluctance motor are eliminated, and the SRM has better vibration reduction and noise reduction effects. The specific principle is as follows:
during SRM operation, three operational phases are typically experienced: start, constant torque and constant power. In the starting stage, in order to obtain larger starting torque, the opening and closing angles are always kept unchanged; in the constant torque stage, a current chopping control mode is adopted, and the on-off angle is slightly adjusted; and in the constant power stage, an angle position control mode is adopted, and the on-off angle is frequently adjusted.
Opening angle theta corresponding to the three operation modes on Angle of turn-off theta off Setting the excitation power supply at the direct current side of the main circuit of the SRM driving part as E, adopting a conventional and traditional phase-change method, and correspondingly switching on and off excitation equations of the single-phase stator circuit are as followsFormula (1):
wherein u is k For the voltage applied to each phase stator winding, θ is the rotor position angle.
According to the foregoing, at the moment when the SRM is just conducting, it is the moment when commutation begins, when the phase starts conducting, the phase voltage of this phase is positive-E to +e according to equation (1), and the vibration excited thereby is as follows equation (2):
wherein c is the non-material damping coefficient of the gas-liquid two-phase flow medium, A is the maximum amplitude of the SRM stator, m is the mass of the stator, omega 0 Is the natural frequency of the stator.
Through t 1 After a certain time, the rotor is operated to an off-angle position, the on-phase starts to be turned off, and the phase voltage thereof is negatively changed from +E to-E, and the vibration excited thereby is expressed as the following formula (3):
then, the total excited synthetic vibration on the stator core 10 is the sum of the formula (2) and the formula (3), that is, the formula (4):
where f (x) is the amplitude of the stator core 10.
As can be seen from equations (2) - (4), by adjusting the non-material damping coefficient c of the evaporative cooling liquid within the hermetic shell 30, the stator amplitude output during SRM operation can be minimized, thereby suppressing vibration of the stator and eliminating vibration and noise of the switched reluctance motor.
And the non-material damping coefficient is closely related to the physical state of the evaporative cooling liquid 31 within the hermetic shell 30. Assume that the coolant is evaporatedThe non-material damping coefficient of the body 31 is c, the dynamic viscosity is μ, the flow velocity generated by the evaporation and cooling of the evaporative cooling liquid 31 is v, the vibration area of the stator contacting with the evaporative cooling liquid 31 is S, and the flow passage width through which the evaporative cooling liquid 31 flows is δ, the non-material damping force F can be obtained from vibration mechanics C The following formula (5),
F c ＝c·υ(5)
according to Newton's internal friction law in fluid mechanics, viscous friction in fluid motion can be obtained as the following formula (6),
the non-material damping during liquid flow is known to be derived from its viscosity, i.e. F C ＝F μ The following formula (7) can be obtained,
according to the change rule of the fluid viscosity described by the fluid mechanics theory, the size of the liquid viscosity depends on the molecular distance and the molecular attraction, when the temperature is increased or the pressure is reduced, the liquid expands, the molecular distance is increased, the molecular attraction is reduced, so the viscosity is reduced, otherwise, when the temperature is reduced or the pressure is increased, the liquid viscosity is increased, and the change rule of the liquid viscosity can be expressed in an exponential form of a formula (8):
wherein mu is 0 Is at a temperature t 0 Hydrodynamic viscosity when the gauge pressure is zero, mu is hydrodynamic viscosity when the temperature is t and the gauge pressure is p, a is an index reflecting the increase speed of the liquid viscosity when the pressure is increased, and the index is generally called as the viscosity-pressure index of the liquid; lambda is an index that reflects how quickly the viscosity of a liquid decreases as the temperature increases, and is generally referred to as the viscosity-temperature index of the liquid. Unless the pressure is extremely high, greater than 10 7 Pa, liquid in normal caseThe viscosity is very weak under the influence of pressure, is very sensitive to temperature change, has slightly raised temperature, and the hydrodynamic viscosity is obviously reduced. For the switched reluctance motor provided in the embodiment of the application, the pressure in the sealed housing 30 cannot reach 10 7 Pa is high, but is substantially at a level as low as or slightly lower than the atmospheric pressure of the ambient air, well below 10 7 Pa, it is therefore entirely possible to ignore the effect of pressure on the viscosity of the liquid.
The viscosity change rule of the gas is different from that of the liquid, and the gas has larger molecular spacing and more intense molecular movement, so that the statistical average value of the aerodynamic viscosity is the formula (9) according to the molecular movement theory:
wherein, the molecular density ρ is inversely proportional to the temperature and the pressure, and the molecular moving average velocity v' and the molecular mean free path l are both directly proportional to the temperature and inversely proportional to the pressure. Therefore, the aerodynamic viscosity increases when the temperature increases, and decreases when the pressure increases.
In the specific implementation, most of the evaporative cooling liquid 31 in the gas-liquid two-phase flow state in the sealed shell 31 is still in a liquid state, so that the hydrodynamic viscosity is basically consistent with the pure liquid dynamic viscosity, and the change rule of the formula (8) is still met. Thus, during operation of the SRM, the dynamic viscosity of the evaporative cooling liquid 31 can be changed by adjusting the temperature of the evaporative cooling liquid 31 within the seal housing 30, and as can be seen from equation (7), the temperature change of the evaporative cooling liquid 31 also changes the non-material damping coefficient c during the flow of the evaporative cooling liquid 31.
In summary, in the embodiment of the present application, the flow rate of the condensing medium in the condenser 20 may be adjusted to adjust the temperature of the evaporative cooling liquid 31, and the non-material damping coefficient in the flowing process of the evaporative cooling liquid 31 may be changed, so as to change the vibration amplitude of the SRM stator, and suppress the vibration and noise of the SRM.
In some possible implementations of the embodiments of the present application, with continued reference to fig. 2, the condenser 20 may specifically include a flow regulating valve 21 for regulating the flow of the cooling medium in the condenser 20.
In practical applications, the flow control valve 21 may be an intelligent electronic flow control valve. The intelligent electronic flow regulating valve is one intelligent controller capable of regulating medium flow accurately and with low power consumption, and may be connected to computer or single chip to accept the real-time control of computer command and send the current flow rate of medium at any time.
In the embodiment of the application, the stator core of the switched reluctance motor is soaked in the evaporative cooling liquid in the sealed shell, and the condenser is further arranged on the upper portion of the sealed shell to regulate the temperature of the evaporative cooling liquid. The flow of cooling liquid in the condenser is adjustable, so that the temperature of the evaporative cooling liquid can be adjusted within a certain range, and the non-material damping coefficient in the sealed shell is changed, thereby realizing the suppression of the vibration of the stator core when the switched reluctance motor operates, and achieving the effects of vibration reduction and noise reduction.
Based on the switched reluctance motor provided by the embodiment, the embodiment of the application also provides a control method of the switched reluctance motor.
Referring to fig. 3, the flow chart of a control method of a switched reluctance motor according to an embodiment of the present application is shown. It should be noted that, the method for controlling the switched reluctance motor provided in the embodiment of the present application is not only applicable to a general one-step shutdown control method, but also applicable to other two-step shutdown methods, three-step shutdown methods, and the like, and the embodiment of the present application is not limited in particular.
The method for controlling the switched reluctance motor provided by the embodiment of the application is applied to the switched reluctance motor provided by any embodiment, and the method comprises the following steps S301 to S303.
S301: and acquiring an on angle and an off angle of the switched reluctance motor to obtain a switch angle combination.
In practical application, when controlling the SRM, the control chip will first detect the operation phase of the SRM, which can be achieved by the operation speed of the SRM, and then issue an angular position command for controlling the switch angle combination, to control the switch state of each phase of stator winding. Thus, in the embodiment of the application, the switch angle combination can be obtained from the control chip or the angle position instruction sent by the control chip.
S302: and inputting the switch angle combination into a control model obtained in advance to obtain the control flow corresponding to the switch angle combination.
In the embodiment of the present application, the flow rate is controlled such that the temperature of the evaporative cooling liquid 31 is in a stage of making the switched reluctance motor vibrate less, and the temperature of the evaporative cooling liquid 31 is adjusted to suppress the amplitude of the stator by adjusting the flow rate of the cooling medium.
In some possible implementations, the control model may be trained in advance according to the correspondence between the sets of switch angle combinations and the control flows. Then, the following steps may be further included before step S302:
s304: and training the neural network according to the pre-obtained training data set to obtain the control model.
The training data set comprises a plurality of groups of corresponding relations between switch angle combinations and control flow.
In practical application, in order to improve the vibration suppression effect, the vibration measuring instrument and its matched sensor may be used to measure the transient values of the amplitude, the vibration speed and the vibration acceleration of the SRM stator in advance, so that under each full-control power switch device on/off angle combination in each operation mode, the temperature of the evaporative cooling liquid 31 is gradually changed by gradually changing the flow of the cooling medium in the condenser tube 20, and the experiment is continued until the flow of the cooling medium with the minimum stator amplitude is found out, so as to obtain the control flow corresponding to the on angle and off angle combination, and obtain the training data set including the corresponding relation between the multiple groups of switch angle combinations and the control flow.
In some possible implementation manners of the embodiments of the present application, the neural network used for training may be a feedforward neural network, and the embodiments of the present application do not specifically limit the structure of the neural network, and the model training method is not described herein again.
It is to be understood that S304 may be performed before step S301, after step S301, or in parallel with step S301, which is not limited in the embodiment of the present application.
S303: the flow rate of the cooling medium is adjusted to a control flow rate to reduce the amplitude of the stator core.
In the embodiment of the application, the stator core of the switched reluctance motor is soaked in the evaporative cooling liquid in the sealed shell, and the condenser is further arranged on the upper portion of the sealed shell to regulate the temperature of the evaporative cooling liquid. The flow of cooling liquid in the condenser is adjustable, so that the temperature of the evaporative cooling liquid can be adjusted within a certain range, and the non-material damping coefficient in the sealed shell is changed, thereby realizing the suppression of the vibration of the stator core when the switched reluctance motor operates, and achieving the effects of vibration reduction and noise reduction.
Based on the switched reluctance motor and the control method thereof provided by the embodiment, the embodiment of the application also provides a device for controlling the switched reluctance motor.
Referring to fig. 4, the structure of a switched reluctance motor control device according to an embodiment of the present application is shown.
The switched reluctance motor control device provided by the embodiment of the application is applied to the switched reluctance motor provided by any embodiment, and can be configured in an SRM control chip; the switch reluctance motor control device comprises: an acquisition module 100, a determination module 200 and an adjustment module 300;
the obtaining module 100 is configured to obtain an on angle and an off angle of the switched reluctance motor, so as to obtain a switch angle combination;
the determining module 200 is configured to input a switch angle combination into a control model obtained in advance, so as to obtain a control flow corresponding to the switch angle combination;
the adjusting module 300 is used for adjusting the flow of the cooling medium to a control flow so as to reduce the amplitude of the stator core.
In some possible implementations, the switched reluctance motor control device provided in the embodiments of the present application may further include: a training module;
the training module is used for training the neural network according to the pre-obtained training data set to obtain a control model;
the training data set comprises a plurality of groups of corresponding relations between switch angle combinations and control flow.
As one example, the neural network used for training is a feed-forward neural network.
In the embodiment of the application, the stator core of the switched reluctance motor is soaked in the evaporative cooling liquid in the sealed shell, and the condenser is further arranged on the upper portion of the sealed shell to regulate the temperature of the evaporative cooling liquid. The flow of cooling liquid in the condenser is adjustable, so that the temperature of the evaporative cooling liquid can be adjusted within a certain range, and the non-material damping coefficient in the sealed shell is changed, thereby realizing the suppression of the vibration of the stator core when the switched reluctance motor operates, and achieving the effects of vibration reduction and noise reduction.
Based on the switched reluctance motor, the control method and the device thereof provided by the embodiment, the embodiment of the application also provides a control system of the switched reluctance motor.
Referring to fig. 5, the structure of a switched reluctance motor control system according to an embodiment of the present application is shown.
The embodiment of the application provides a switch reluctance motor control system, including: a switched reluctance motor 501 and a control unit 502.
Wherein the switched reluctance motor 501 may be a switched reluctance motor provided in any of the embodiments described above; a control unit 502 for executing the switched reluctance motor control method provided in any of the above embodiments.
In the embodiment of the application, the stator core of the switched reluctance motor is soaked in the evaporative cooling liquid in the sealed shell, and the condenser is further arranged on the upper portion of the sealed shell to regulate the temperature of the evaporative cooling liquid. The flow of cooling liquid in the condenser is adjustable, so that the temperature of the evaporative cooling liquid can be adjusted within a certain range, and the non-material damping coefficient in the sealed shell is changed, thereby realizing the suppression of the vibration of the stator core when the switched reluctance motor operates, and achieving the effects of vibration reduction and noise reduction.
Based on the switched reluctance motor, the control method, the device and the system thereof provided by the embodiment, the embodiment of the application also provides a controller for controlling the switched reluctance motor provided by the embodiment. The controller includes: a memory and a controller;
wherein the memory is used for storing program codes; and a processor for acquiring the program code, which when executed by the processor, implements the switched reluctance motor control method as provided in the above embodiment.
It should be noted that, in the present description, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different manner from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. The system or the device disclosed in the embodiments are relatively simple in description, and the relevant points refer to the description of the method section because the system or the device corresponds to the method disclosed in the embodiments.
It is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the present application in any way. While the present application has been described with reference to the preferred embodiments, it is not intended to limit the present application. Any person skilled in the art may make many possible variations and modifications to the technical solution of the present application, or modify equivalent embodiments, using the methods and technical contents disclosed above, without departing from the scope of the technical solution of the present application. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present application, which do not depart from the content of the technical solution of the present application, still fall within the scope of protection of the technical solution of the present application.
Claims (6)
1. A control method of a switch reluctance motor is characterized by being applied to the switch reluctance motor; the switched reluctance motor includes: a stator core, a sealed housing, and a condenser; the sealing shell is sleeved outside the stator core; the inside of the sealed shell is filled with evaporative cooling liquid, and the stator core is soaked in the evaporative cooling liquid; the upper part of the sealing shell is provided with a liquid storage tank and a condenser, and the flow of cooling medium in the condenser is adjustable; the condenser comprises: a flow regulating valve; the flow regulating valve is used for regulating the flow of the cooling medium;
the method comprises the following steps:
acquiring an on angle and an off angle of the switched reluctance motor to obtain a switch angle combination;
training a neural network according to a pre-obtained training data set to obtain a control model;
the training data set comprises a plurality of groups of corresponding relations between switch angle combinations and control flow;
inputting the switch angle combination into the control model to obtain control flow corresponding to the switch angle combination;
and adjusting the flow rate of the cooling medium to the control flow rate to reduce the amplitude of the stator core.
2. The method of claim 1, wherein the neural network is a feed-forward neural network.
3. A control device that performs the control method of the switched reluctance motor according to claim 1, characterized in that the control device comprises: the device comprises an acquisition module, a determination module, a training module and an adjustment module;
the acquisition module is used for acquiring the on angle and the off angle of the switched reluctance motor to obtain a switch angle combination;
the training module is used for training the neural network according to a preset training data set to obtain a control model;
the determining module is used for inputting the switch angle combination into the control model to obtain control flow corresponding to the switch angle combination;
the adjusting module is used for adjusting the flow of the cooling medium to the control flow so as to reduce the amplitude of the stator core.
4. A control device according to claim 3, wherein the neural network is a feed-forward neural network.
5. A switched reluctance motor control system comprising: a switched reluctance motor and a control unit;
the switched reluctance motor includes: a stator core and a condenser;
a sealing shell is sleeved outside the stator core;
the inside of the sealed shell is provided with evaporative cooling liquid, and the stator core is soaked in the evaporative cooling liquid;
the upper part of the sealing shell is provided with a condenser, and the flow of cooling medium in the condenser is adjustable;
the control unit is configured to perform the switched reluctance motor control method according to any one of claims 1-2.
6. A controller, characterized by being applied to a switched reluctance motor; the controller includes: a memory and a processor;
the memory is used for storing program codes;
the processor being configured to obtain the program code, which when executed by the processor, implements the switched reluctance motor control method according to any one of claims 1-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810388090.4A CN108471198B (en) | 2018-04-26 | 2018-04-26 | Control method, device and system for switched reluctance motor and controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810388090.4A CN108471198B (en) | 2018-04-26 | 2018-04-26 | Control method, device and system for switched reluctance motor and controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108471198A CN108471198A (en) | 2018-08-31 |
| CN108471198B true CN108471198B (en) | 2023-07-28 |
Family
ID=63263885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810388090.4A Active CN108471198B (en) | 2018-04-26 | 2018-04-26 | Control method, device and system for switched reluctance motor and controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108471198B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1801583A (en) * | 2004-12-31 | 2006-07-12 | 中国科学院电工研究所 | Evaporating and cooling system monitoring and protection controlling device for generator stator |
| CN101346595A (en) * | 2005-11-15 | 2009-01-14 | 约克国际公司 | Application of a switched reluctance motion control system in a chiller system |
| CN102287269A (en) * | 2011-06-28 | 2011-12-21 | 北京动力机械研究所 | Electric starter for small turbine engine |
| CN104578469A (en) * | 2015-01-22 | 2015-04-29 | 北京建筑大学 | Method and device for lowering vibration and noise of switched reluctance motor |
| CN104578596A (en) * | 2015-01-22 | 2015-04-29 | 北京建筑大学 | Motor and method for machining stator structure of motor |
| CN105591583A (en) * | 2010-03-08 | 2016-05-18 | 江森自控科技公司 | Method For Controlling A Permanent Magnet Synchronous Motor |
| WO2016079473A1 (en) * | 2014-11-20 | 2016-05-26 | Valeo Air Management Uk Limited | An apparatus and method for controlling current in an electric supercharger |
| CN106230143A (en) * | 2014-03-31 | 2016-12-14 | 北京建筑大学 | A kind of switched reluctance machines |
| CN106314110A (en) * | 2016-09-12 | 2017-01-11 | 法乐第(北京)网络科技有限公司 | Electric vehicle assembly cooling system and method and electric vehicle comprising system |
| CN107947673A (en) * | 2016-10-12 | 2018-04-20 | 丰田自动车株式会社 | Control device for switched reluctance motor |
| CN208723719U (en) * | 2018-04-26 | 2019-04-09 | 北京建筑大学 | A kind of switched reluctance machines and its control system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2008291655B2 (en) * | 2007-08-24 | 2012-12-06 | Sunco Investments Ltd. | Multistage variable reluctance motor/generator |
| US8875515B2 (en) * | 2011-04-29 | 2014-11-04 | General Electric Company | Integrated generator cooling system |
| JP2013169029A (en) * | 2012-02-14 | 2013-08-29 | Kobe Steel Ltd | Power generator |
-
2018
- 2018-04-26 CN CN201810388090.4A patent/CN108471198B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1801583A (en) * | 2004-12-31 | 2006-07-12 | 中国科学院电工研究所 | Evaporating and cooling system monitoring and protection controlling device for generator stator |
| CN101346595A (en) * | 2005-11-15 | 2009-01-14 | 约克国际公司 | Application of a switched reluctance motion control system in a chiller system |
| CN105591583A (en) * | 2010-03-08 | 2016-05-18 | 江森自控科技公司 | Method For Controlling A Permanent Magnet Synchronous Motor |
| CN102287269A (en) * | 2011-06-28 | 2011-12-21 | 北京动力机械研究所 | Electric starter for small turbine engine |
| CN106230143A (en) * | 2014-03-31 | 2016-12-14 | 北京建筑大学 | A kind of switched reluctance machines |
| WO2016079473A1 (en) * | 2014-11-20 | 2016-05-26 | Valeo Air Management Uk Limited | An apparatus and method for controlling current in an electric supercharger |
| CN104578469A (en) * | 2015-01-22 | 2015-04-29 | 北京建筑大学 | Method and device for lowering vibration and noise of switched reluctance motor |
| CN104578596A (en) * | 2015-01-22 | 2015-04-29 | 北京建筑大学 | Motor and method for machining stator structure of motor |
| CN106314110A (en) * | 2016-09-12 | 2017-01-11 | 法乐第(北京)网络科技有限公司 | Electric vehicle assembly cooling system and method and electric vehicle comprising system |
| CN107947673A (en) * | 2016-10-12 | 2018-04-20 | 丰田自动车株式会社 | Control device for switched reluctance motor |
| CN208723719U (en) * | 2018-04-26 | 2019-04-09 | 北京建筑大学 | A kind of switched reluctance machines and its control system |
Non-Patent Citations (2)
| Title |
|---|
| 栾茹，邓冉冉，祁新春.液压抵消开关磁阻电机径向电磁力的可行性研究.《微电机》.2017,第50卷(第11期),第14-19页. * |
| 栾茹，陈松.利用冷却介质优化设计的卧式电机.《防爆电机》.2014,第49卷(第1期),第7-9页、18页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108471198A (en) | 2018-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR920006828B1 (en) | Torque controller for internal combustion engine | |
| US6487998B1 (en) | Drive system, particularly for a motor vehicle, and process for operating it | |
| Bayless et al. | Acoustic noise reduction of switched reluctance motor with reduced RMS current and enhanced efficiency | |
| CN103872951B (en) | Permanent magnet synchronous motor torque control method based on sliding mode flux linkage observer | |
| JP2007126073A (en) | Vibration suppression device for engine | |
| CN106337793B (en) | Method and system for protecting resonant linear compressor | |
| JP2006291956A (en) | Operation control device and method for reciprocating compressor | |
| KR100730251B1 (en) | Refrigerator | |
| CN108471198B (en) | Control method, device and system for switched reluctance motor and controller | |
| Hu et al. | Drive circuit‐based torque‐ripple suppression method for single‐phase BLDC fan motors to reduce acoustic noise | |
| CN108390511B (en) | Switch reluctance motor and control method, device and system thereof | |
| CN208707475U (en) | A kind of switched reluctance machines and its control system | |
| CN208723719U (en) | A kind of switched reluctance machines and its control system | |
| Choi et al. | Variable speed control of diesel engine-generator using sliding mode control | |
| CN105024606A (en) | Intelligent motor driving method for high-voltage circuit breaker | |
| KR101766244B1 (en) | Apparatus and method for controlling compressor and refrigerator including the same | |
| Kato et al. | Reduction of rotational vibration using coriolis force generated by electromagnetic oscillatory actuator moving in radial direction | |
| Fahimi | A switched reluctance machine based starter/generator for more electric cars | |
| JP2008279810A (en) | Vehicular driving force control apparatus | |
| Suciu et al. | Performance enhancement of an induction motor by secondary impedance control | |
| Shahaj | Mitigation of vibration in large electrical machines | |
| Gerlach et al. | Self-sensing control of a single cylinder ICE with directly coupled PMSM | |
| CN114175494A (en) | Motor driving device and refrigerator using the same | |
| CN113612413A (en) | Method for inhibiting electromagnetic force pulsation of switched reluctance linear motor | |
| Controller | Performance enhancement of BLDC drives in electric vehicles by using fuzzy gain scheduling pi controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Qi Xinchun Inventor after: Luan Ru Inventor before: Luan Ru |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |