CN110456657B - Simulation method of reluctance motor, embedded system and operation method - Google Patents
Simulation method of reluctance motor, embedded system and operation method Download PDFInfo
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Abstract
The invention discloses a simulation method, an embedded system and an operation method of a reluctance motor, which comprise a virtual operation model of the reluctance motor, wherein the virtual operation model receives simulation parameters of the reluctance motor for setting, can receive simulated electric energy input parameters and operates along with time parameters according to the simulated electric energy input parameters and the simulation parameters; the simulation parameters of the reluctance motor are received and set, the simulation electric energy input parameters are input into the virtual operation model of the reluctance motor, the virtual operation model simulates the operation of the actual reluctance motor along with the time parameters, and the operation information generated in the operation process of the reluctance motor is obtained through operation.
Description
Technical Field
The invention relates to the field of measurement and control of reluctance motors.
Background
In the research and development and measurement and control of reluctance motors, different control logics and operation processes of the reluctance motors need to be measured, and operation parameters of the reluctance motors with different models can be detected.
Disclosure of Invention
The invention aims to solve at least one of the technical problems in the prior art, and provides a virtual operation model, an embedded system and an operation method which are established according to the operation rule of a reluctance motor, can be used for setting simulation parameters of the reluctance motor, simulating the process of the actual reluctance motor running along with time parameters according to the simulation parameters and input simulation electric energy input parameters, and can obtain the operation information of the simulation reluctance motor.
The technical scheme adopted by the invention is as follows:
a simulation method of a reluctance motor comprises a virtual operation model of the reluctance motor, wherein the virtual operation model receives preset simulation parameters of the reluctance motor for setting, and can receive simulated electric energy input parameters and operate according to the simulated electric energy input parameters and the simulation parameters along with time parameters.
The virtual operation model includes:
the simulation inductance operation unit is used for obtaining simulation real-time inductance according to the simulation real-time angle operation of the rotor;
the analog feedback current operation unit is used for obtaining analog feedback current according to the operation of the analog real-time inductor, the analog electric energy input parameter and the time parameter;
the simulation torque operation unit is used for obtaining simulation real-time torque according to the simulation feedback current operation;
the simulation rotating speed operation unit is used for calculating a simulation real-time rotating speed according to the simulation real-time torque;
the simulation angle operation unit is used for updating a simulation real-time angle of the rotor according to the simulation real-time rotating speed and the time parameter;
and the simulated inductance operation unit receives the updated simulated real-time angle and operates again to obtain the simulated real-time inductance.
The simulation parameters comprise inductance change curves of the stator, and the inductance change curves are changed according to real-time angle changes of the rotor;
and the simulated inductance operation unit obtains the simulated real-time inductance according to the corresponding condition of the simulated real-time angle in the inductance change curve.
The simulation parameters comprise a rated current maximum value, and the simulation electric energy input parameters comprise a phase power output state and a phase input voltage;
the analog feedback current operation unit is provided with an analog feedback current target value,
the analog feedback current operation unit judges whether the phase power output state is on,
if the current is not switched on, setting the target value of the analog feedback current to be zero, setting the voltage of the analog winding to be a negative value of the phase input voltage, and calculating to obtain the current real-time increment step length according to the voltage of the analog winding, the time parameter and the analog real-time inductance;
if the current is switched on, setting the target value of the analog feedback current as the maximum value of the rated current, setting the voltage of the analog winding as the phase input voltage, and calculating according to the voltage of the analog winding, the time parameter and the analog real-time inductance to obtain the current real-time increment step length;
the original analog feedback current and the current real-time increment step length are added to obtain an analog feedback current, the analog feedback current is limited, the analog feedback current does not exceed the target value of the analog feedback current when the analog feedback current is increased, and the analog feedback current is not lower than the target value of the analog feedback current when the analog feedback current is decreased.
And the simulated torque operation unit is used for obtaining simulated real-time torque according to the corresponding condition of the simulated real-time angle on the inductance change curve and the simulated feedback current operation.
The simulation parameters comprise a simulation load torque, a friction coefficient and a simulation rotational inertia;
the simulation rotating speed calculating unit calculates to obtain a simulation rotating speed increment step length according to the simulation real-time torque, the simulation load torque, the friction coefficient, the original simulation real-time rotating speed and the simulation rotational inertia;
and adding the original simulated real-time rotating speed and the simulated rotating speed increment step length to obtain the simulated real-time rotating speed.
The simulation parameters comprise the number of poles of a rotor of the simulated reluctance motor;
the simulation angle operation unit obtains a simulation angle step length according to the simulation real-time rotating speed, the simulation reluctance motor rotor pole number and the time parameter operation;
and adding the original simulation real-time angle and the simulation angle step length to obtain the simulation real-time angle.
The reluctance motor is a multi-phase reluctance motor, and the simulation parameters further comprise phase angle intervals;
the simulation inductance calculation unit calculates the simulation real-time inductance of each phase according to the simulation real-time angle of each phase of the rotor;
the analog feedback current operation unit calculates to obtain analog feedback current of each phase according to the analog real-time inductance of each phase, the analog electric energy input parameter of each phase and the time parameter;
the simulation torque calculation unit calculates simulation real-time torque of each phase according to the simulation feedback current of each phase, and the simulation real-time torques of each phase are added to obtain total simulation torque;
the simulation rotating speed operation unit calculates to obtain a simulation real-time rotating speed according to the total simulation torque;
the simulation angle operation unit obtains a simulation angle step length, the original simulation real-time angle of one phase of the simulation angle operation unit is added with the value of the simulation angle step length to obtain a simulation real-time angle of one phase of the simulation angle operation unit, and the simulation real-time angles of the other two phases of the simulation angle operation unit are obtained according to the simulation real-time angle of one phase of the simulation angle operation unit and the angle intervals of all phase angles;
and the simulated inductance operation unit receives the updated simulated real-time angles of the phases and re-operates to obtain the simulated real-time inductance of each phase.
The embedded system is characterized by comprising a high-frequency timer and a simulation method storing the reluctance motor, wherein the high-frequency timer provides high-frequency time parameters for a virtual operation model.
A method of operation, comprising:
inputting simulation parameters to the embedded system to set a virtual operation model;
inputting analog electric energy input parameters to enable the virtual operation model to operate along with time parameters;
and (3) acquiring the operation information of the simulated reluctance motor generated by the virtual operation model at a high frequency and timing.
One of the above technical solutions has at least one of the following advantages or beneficial effects:
the invention relates to a simulation method of a reluctance motor, which comprises the steps of establishing a virtual operation model of the reluctance motor, receiving simulation parameters of the reluctance motor for setting, adjusting the simulation parameters of the reluctance motor according to inherent characteristics of different reluctance motor models, inputting simulated electric energy input parameters for the virtual operation model of the reluctance motor, simulating the operation of a real reluctance motor by the virtual operation model along with time parameters, and calculating to obtain operation information generated in the operation process of the reluctance motor, wherein the design directly simulates the operation of the real reluctance motor in a virtual environment, randomly modifies various simulation parameters of the reluctance motor according to the content to be measured, generates different simulated electric energy input parameters by different control logics, and can directly obtain the operation effect of the reluctance motor under the control logics;
the invention also discloses an embedded system, which stores the virtual operation model of the reluctance motor, generates different simulated electric energy input parameters according to different control logics, and a high-frequency timer provides high-frequency time parameters for the virtual operation model, the higher the time interval frequency of each execution calculation, the smaller the interval, the better the simulation effect, realizes the process close to the real continuous operation, acquires various operation information of the reluctance motor, is convenient to operate, operates stably, is particularly suitable for the early verification of a motor control algorithm, and is safer than the mode of directly verifying the actual motor operation;
the invention also discloses an operation method, which inputs various simulation parameters to the embedded system for setting, detects the operation effects of various different types of reluctance motors at high frequency in a timing manner, automatically generates operation information, does not need to disassemble and assemble the different types of reluctance motors, has stable operation and accurate data, and simulates the process close to the real continuous operation.
Drawings
The following further describes embodiments of the present invention with reference to the drawings.
Fig. 1 is a structural diagram of a virtual operation model of a reluctance motor according to the present invention.
Fig. 2 is a schematic diagram of an inductance variation curve of a virtual operation model of a reluctance motor according to the present invention.
FIG. 3 is a flow chart of the operation method of the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings only for the convenience of description of the present invention and simplification of the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
As shown in fig. 1, a simulation method for a reluctance motor includes a virtual operation model of the reluctance motor, where the virtual operation model receives and sets simulation parameters of the reluctance motor, and the virtual operation model can receive and operate according to the simulation power input parameters and the simulation parameters over time.
In some embodiments, the reluctance motor may be a single-phase motor, a three-phase motor, a four-phase motor, a six-phase motor, or the like, which is not limited herein.
The virtual operation model of reluctance machine is established in this design, and the simulation parameter of receiving reluctance machine sets for, the simulation parameter of reluctance machine here can be adjusted according to the inherent characteristic of different reluctance machine models, for the virtual operation model input simulation electric energy input parameter of reluctance machine, the operation of virtual operation model reality reluctance machine is simulated to the parameter along with time, and the operation information that produces among the operation process of operation of reluctance machine is reachd in the operation, directly simulate the operation of reality reluctance machine in virtual environment, and can come the various simulation parameters of random modification reluctance machine according to the content that needs survey, produce different simulation electric energy input parameters by different control logic, can directly reachd under this control logic, the operation effect of reluctance machine, detect rapidly, convenient operation, and the operation is stable, and data is accurate.
In some embodiments, the virtual operations model comprises:
the simulation inductance operation unit is used for obtaining simulation real-time inductance according to simulation real-time angle operation of the rotor;
the analog feedback current operation unit is used for obtaining analog feedback current according to the operation of the analog real-time inductor, the analog electric energy input parameter and the time parameter;
the simulation torque operation unit is used for obtaining simulation real-time torque according to the simulation feedback current operation;
the simulation rotating speed operation unit is used for obtaining simulation real-time rotating speed according to simulation real-time torque operation;
the simulation angle operation unit is used for updating a simulation real-time angle of the rotor according to the simulation real-time rotating speed and the time parameter;
and the simulated inductance operation unit receives the updated simulated real-time angle and operates again to obtain the simulated real-time inductance.
The structure of a reluctance motor is exemplified below, in which salient poles of a stator and a rotor are laminated by common silicon steel sheets, the stator has 6 salient poles, concentrated windings are wound on the poles for generating a magnetic field, two diametrically opposite windings are connected, called as "one phase", there are three phases ABC, the rotor has 4 salient poles, and there are no windings and no permanent magnets.
According to the principle of minimum reluctance, the magnetic flux is always closed along the path of minimum reluctance, while the shaped core must have its own main axis coincident with the axis of the magnetic field when it is moved to the position of minimum reluctance. Thus, when one of the phases is energized, the stator magnetic field attracts the nearest rotor salient pole, causing the rotor to rotate. The basic control of the reluctance motor can be realized by sequentially electrifying the phase windings according to the position of the rotor, and the quantitative control of the torque and the rotating speed of the reluctance motor can be realized by controlling the electrifying time and the electrifying duration of each phase.
Therefore, the inductance of the stator winding changes periodically corresponding to the rotation position of the rotor, when the inductance is increased, the current acceleration of the stator winding is reduced, and when the inductance is reduced, the current acceleration of the stator winding is increased.
As shown in fig. 2, the simulation parameters include an inductance variation curve of the stator, which varies according to a real-time angle variation of the rotor;
and the simulated inductance operation unit obtains the simulated real-time inductance according to the corresponding condition of the simulated real-time angle in the inductance change curve.
In the inductance change curve, a maximum value Lmax of winding inductance, a minimum value Lmin of winding inductance, an angle AngleUpBegin corresponding to the beginning of inductance rising and an angle AngleUpEnd corresponding to the end of inductance rising can be obtained; information of an angle AngleDownBegin corresponding to the beginning of the inductor descent and an angle AngleDownEnd corresponding to the end of the inductor descent;
the inductance change curve comprises a low inductance interval, an inductance rising interval, a high inductance interval, an inductance falling interval, an inductance rising start corresponding angle AngleUpBegin, an inductance rising end corresponding angle AngleUpEnd, an inductance falling start corresponding angle AngleDown Begin, an inductance falling end corresponding angle AngleDown End, a winding inductance maximum value Lmax corresponding to the high inductance area and a winding inductance minimum value Lmin corresponding to the low inductance area;
obtaining an inductance slope rising coefficient K1 corresponding to an inductance rising interval through an inductance rising start corresponding angle AngleUpBegin, an inductance rising end corresponding angle AngleUpEnd, a winding inductance maximum value Lmax and a winding inductance minimum value Lmin, wherein the inductance slope rising coefficient K1= (winding inductance maximum value Lmax-winding inductance minimum value Lmin)/(inductance rising end corresponding angle AngleUpEnd-inductance rising start corresponding angle AngleUpBegin);
obtaining an inductance slope rising coefficient K2 corresponding to an inductance falling interval through an inductance falling start corresponding angle AngleDownBegin, an inductance falling end corresponding angle AngleDownEnd, a winding inductance maximum value Lmax and a winding inductance minimum value Lmin, wherein the inductance slope rising coefficient K2 is = (winding inductance maximum value Lmax-winding inductance minimum value Lmin)/(inductance falling end corresponding angle AngleDownEnd-inductance falling start corresponding angle AngleDownBegin);
if the simulation real-time angle is in the low-inductance interval, simulating real-time inductance L _ x = minimum winding inductance Lmin;
if the simulated real-time Angle is in the inductor rising interval, simulating the real-time inductor L _ x = the winding inductor minimum value Lmin + the inductor slope rising coefficient K1 (simulating the real-time Angle Angle _ x-the inductor rising starting corresponding Angle AngleUpBegin);
if the simulation real-time angle is in a high-inductance interval, simulating real-time inductance L _ x = maximum value Lmax of winding inductance;
if the simulated real-time Angle is in the inductor descending interval, the simulated real-time inductor L _ x = the maximum value Lmax of the winding inductor-the ascending coefficient of the inductor slope K2 (the current Angle _ x-the Angle corresponding to the descending of the inductor)
In an initial state, the initial angle of the default rotor can be set, each phase is different from the fixed angle, and the simulated real-time inductance is calculated.
The design can measure a multi-phase reluctance motor, such as three phases, four phases and six phases, if the reluctance motor is a three-phase reluctance motor, the simulated inductance operation unit respectively operates to obtain the simulated real-time inductance of each phase according to the simulated real-time Angle of each phase of the rotor, x variables in the simulated real-time Angle _ x and the simulated real-time inductance L _ x represent that each phase is respectively calculated, such as three phases of _ x = a, b and c, and are respectively calculated, and the meanings of other variables containing _ x are the same as the above, and all represent that data of each phase are respectively calculated;
the simulation parameters comprise a rated current maximum value, the simulation electric energy input parameters comprise a phase power output state Ponoff _ x and a phase input voltage Vin, wherein the phase power output state Ponoff _ x is generated according to a set control logic of an external controller, and the phase power output state Ponoff _ x is determined by a switching signal of the simulation power converter;
the analog feedback current operation unit is provided with an analog feedback current target value,
the analog feedback current operation unit judges whether the phase power output state is on,
if the current is not switched on, setting the target value of the analog feedback current to be zero, setting the voltage of the analog winding to be a negative value of the phase input voltage, and calculating to obtain the current real-time increment step length according to the voltage of the analog winding, the time parameter and the analog real-time inductance;
if the current is switched on, setting the target value of the analog feedback current as the maximum value of the rated current, setting the voltage of the analog winding as the phase input voltage, and calculating to obtain the current real-time increment step length according to the voltage of the analog winding, the time parameter and the analog real-time inductance;
the original analog feedback current and the current real-time increment step length are added to obtain an analog feedback current, the analog feedback current is limited, the analog feedback current does not exceed the target value of the analog feedback current when the analog feedback current is increased, and the analog feedback current is not lower than the target value of the analog feedback current when the analog feedback current is decreased.
The design simulates an external controller to control the output of the power converter, while a general power converter can be composed of a switch driving component, forms a switch state and an input voltage output by the switch driving component to a reluctance motor load, in the case of a three-phase reluctance motor, a phase power output state shows the switch state of each switch driving component, and a phase input voltage is the input voltage of each phase.
The analog feedback current operation unit is provided with an analog feedback current target value Itarget _ x,
the analog feedback current arithmetic unit judges whether the phase power output state Ponoff _ x is on or not,
if the current is not switched on, setting a target value Itarget _ x of the analog feedback current to be 0, setting the voltage V _ x of the analog winding to be = the negative phase input voltage Vin, and calculating the current real-time increment step dI _ x = the voltage V _ x of the analog winding to be interrupted for the period interval dt/the analog real-time inductance L _ x;
if the current is switched on, setting a simulation feedback current target value Itarget _ x as a rated current maximum value, simulating winding voltage V _ x = phase input voltage Vin, and calculating current real-time increment step length dI _ x = simulation winding voltage V _ x/interruption period interval time dt/simulation real-time inductance L _ x;
the analog feedback current I _ x = the original analog feedback current + the current real-time increment step dI _ x, and if dI is positive, the analog feedback current I _ x does not exceed the analog feedback current target value Itarget _ x when increasing, and if dI is negative, the analog feedback current I _ x does not fall below the analog feedback current target value Itarget _ x when decreasing.
The design is generally executed in high-frequency timing calculation, a process close to real continuous operation is realized by a high-frequency discretization step, a virtual operation model operates along with time parameters, and the time interval of executing calculation each time is taken as a time parameter dt, so that the higher the timing execution frequency is, namely the smaller dt is, the better the simulation effect is, the dt is generally controlled in microsecond (us) level, and the effect is better;
in an initial state, the original analog feedback current is preset to be zero, the interruption period interval time dt is the differential of a time parameter and represents the execution interval of analog operation, and in the three-phase reluctance motor, the analog winding voltage V _ x, the current real-time increment step dI _ x, the analog feedback current target value Itarget _ x and the x variable in the analog feedback current I _ x represent the calculation of each phase respectively.
And the simulated torque operation unit is used for obtaining simulated real-time torque according to the corresponding condition of the simulated real-time angle in the inductance change curve and the simulated feedback current operation.
Comparing the simulated real-time Angle _ x with the simulated reluctance motor inductance change Angle range in the inductance change curve;
if in a low inductance zone or a high inductance zone, simulating a real-time Angle Angle _ x < the Angle Angle corresponding to the beginning of the rising of the inductor and Angle corresponding to the end of the rising of the inductor or simulating a real-time Angle Angle _ x < the Angle Angle corresponding to the beginning of the falling of the inductor and Angle corresponding to the end of the falling of the inductor or simulating a real-time Angle Angle _ x > and Angle corresponding to the end of the falling of the inductor, simulating a real-time Torque Torque _ x =0;
if the inductance rises in the inductance rising interval, the inductance rising starts corresponding to an Angle AngleUpBegin < simulation real-time Angle _ x < inductance rising end corresponding Angle AngleUpEnd, and the simulation real-time Torque Torque _ x =0.5 ×, the inductance slope rising coefficient K1 ×, the simulation feedback current I _ x ×, and the simulation feedback current I _ x;
if in the inductor descending interval, the descending of the inductor starts to correspond to an Angle AngleDownBegin < the simulated real-time Angle _ x < the descending of the inductor finishes corresponding to an Angle AngleDownEnd, and the simulated real-time Torque Torque _ x = -0.5 = the gradient descending coefficient of the inductor K2 × the simulated feedback current I _ x ×;
in the multi-phase reluctance motor, a simulation torque operation unit calculates simulation real-time torque of each phase according to the simulation feedback current of each phase, and the simulation real-time torques of each phase are added to obtain total simulation torque;
total simulated Torque _ all = Sum (Torque _ x);
the simulation parameters comprise simulation load torque, friction coefficient and simulation rotational inertia;
the simulation rotating speed calculating unit calculates to obtain a simulation rotating speed increment step length according to the simulation real-time torque, the simulation load torque, the friction coefficient, the original simulation real-time rotating speed and the simulation rotational inertia;
and adding the original simulated real-time rotating speed and the simulated rotating speed increment step length to obtain the simulated real-time rotating speed.
In the three-phase reluctance motor, a simulation rotating speed operation unit calculates to obtain a simulation real-time rotating speed according to the total simulation torque;
the method comprises the following steps of simulating a rotating Speed increment step dSpeed = interruption period interval time dt (total simulated Torque Torque _ all-simulated load Torque Torque L-friction coefficient Komg absolute value Speed of simulated real-time rotating Speed)/simulating rotational inertia J;
the simulated real-time rotating Speed = original simulated real-time rotating Speed + simulated rotating Speed increment step length dSpeed;
judging whether the simulated real-time rotating Speed is negative, if so, indicating that reverse rotation is generated, reversing the simulated steering and changing the simulated real-time rotating Speed into a positive value;
the simulation parameters comprise the number of poles of a rotor of the simulated reluctance motor;
the simulation angle operation unit obtains a simulation angle step length according to the simulation real-time rotating speed, the simulation reluctance motor rotor pole number and the time parameter operation;
and adding the original simulation real-time angle and the simulation angle step length to obtain the simulation real-time angle.
Simulating an angle step length dAngle = simulating a real-time rotating Speed and a simulated reluctance motor rotor pole number PoleNumber 2/interruption period t;
the simulation real-time Angle _ x = the original simulation real-time Angle + the simulation Angle step length dAngle;
if the reluctance motor is a three-phase reluctance motor, the simulation parameters further include phase angle intervals.
The simulation angle operation unit obtains a simulation angle step length, the original simulation real-time angle of one phase of the simulation angle operation unit is added with the value of the simulation angle step length to obtain a simulation real-time angle of one phase of the simulation angle operation unit, and the simulation real-time angles of the other two phases of the simulation angle operation unit are obtained according to the simulation real-time angle of one phase of the simulation angle operation unit and the angle intervals of all phase angles;
namely, the simulation real-time Angle _ a of one phase = the original A-phase simulation real-time Angle + the simulation Angle step length dAngle, and according to the Angle interval Angle _ sp between the phases, other simulation phase Angle values Angle _ x are sequentially calculated;
and the simulated inductance operation unit receives the updated simulated real-time angles of the phases and re-operates to obtain the simulated real-time inductance of each phase.
In the operation process, under the change of time parameters, the virtual operation model carries out cyclic processing in the simulation inductance operation unit, the simulation feedback current operation unit, the simulation torque operation unit, the simulation rotating speed operation unit and the simulation angle operation unit, and information obtained by operation of each operation unit can be output, so that the operation condition of the reluctance motor of the type under the action of the simulation electric energy input parameters is fed back.
The embodiment of the invention also discloses an embedded system which comprises a high-frequency timer and a simulation method for storing the reluctance motor disclosed by any one of the embodiments, wherein the high-frequency timer provides high-frequency time parameters for the virtual operation model.
In some embodiments, the embedded system may be an embedded control board or a storage component, and may be accessed to an upper computer or a computer system for generating the control logic to operate, and output the simulated real-time angle and the simulated feedback current obtained by the operation to the computer system or the upper computer.
The virtual operation model of the reluctance motor is stored, different simulated electric energy input parameters are generated according to different control logics, the high-frequency timer provides high-frequency time parameters for the virtual operation model, the higher the time interval frequency of each execution calculation is, the smaller the interval is, the better the simulation effect is, the process close to the real continuous operation is realized, various operation information of the reluctance motor is obtained, the operation is convenient, the operation is stable, the virtual operation model is particularly suitable for the early verification of a motor control algorithm, and the method is safer than the mode of directly verifying the actual motor operation.
The upper computer or the computer system can be generally provided with a graphical human-computer operation interface, the execution time interval of the upper computer or the computer system cannot meet the requirement for executing control on the motor, the upper computer or the computer system can only be used for data display, and the virtual operation model disclosed by the embodiment is not easy to establish;
but the method can be accessed into the embedded system of the design to display the operation parameters or set the parameters of the virtual operation model in a communication mode, and the embedded system realizes the real-time control of the motor.
The specific embodiment of the invention also discloses an operation method, which comprises the following steps:
inputting simulation parameters to an embedded system disclosed in any of the above embodiments to set a virtual operation model;
inputting analog electric energy input parameters to enable the virtual operation model to operate along with time parameters;
and acquiring the operation information of the simulated reluctance motor generated by the virtual operation model at high frequency and timing.
The setting of each simulation parameter in the virtual operation model can be modified, and the external control logic and the virtual operation model are synchronously executed in the timing interrupt of the embedded system;
the running scene of a real reluctance motor can be simulated, and phase angle positions and winding current signals are generated in real time and used by a controller;
the control software reads the signal data of each phase position sensor and the current sensor of the simulated reluctance motor, and sends real-time control signals for driving the power module to be switched on or switched off like controlling the actual reluctance motor after the logical calculation of a control algorithm.
Inputting a voltage in the virtual operation model, detecting whether the virtual operation model is enabled, if not, not processing, and if enabled, entering the next step;
inputting a switching signal of the analog power converter;
calculating the analog real-time inductance of each phase;
calculating the analog feedback current of each phase;
calculating the simulated real-time torque and the total simulated torque of each phase;
calculating a simulated real-time rotating speed;
calculating the simulated real-time angle of each phase;
updating and outputting the angle position of each phase, simulating and setting a plurality of position sensors, and simulating the output signal of each position sensor according to the simulated real-time angle of each phase;
the analog feedback current of each phase is updated and output, the current detector of each phase can be set in an analog mode, and the output signal of the current detector of each phase can be simulated according to the analog feedback current of each phase.
This design inputs various simulation parameters to foretell reluctance machine's virtual operation model and sets for, and the operation effect of multiple different grade type reluctance machine is regularly detected to the high frequency to automatically, produce the operation information, need not to dismantle the installation to the reluctance machine of different grade type, the operation is stable, and data is accurate, simulates out the process that is close to reality continuous operation.
It is readily understood by those skilled in the art that the above-described preferred modes can be freely combined and superimposed without conflict.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (8)
1. The simulation method of the reluctance motor is characterized by comprising a virtual operation model of the reluctance motor, wherein the virtual operation model receives simulation parameters of the reluctance motor for setting, can receive simulation electric energy input parameters and operates according to the simulation electric energy input parameters and the simulation parameters along with time parameters;
the virtual operation model includes:
the simulation inductance operation unit is used for obtaining simulation real-time inductance according to simulation real-time angle operation of the rotor;
the analog feedback current operation unit is used for obtaining analog feedback current according to the operation of the analog real-time inductor, the analog electric energy input parameter and the time parameter;
the simulation torque operation unit is used for obtaining simulation real-time torque according to the simulation feedback current operation;
the simulation rotating speed operation unit is used for obtaining simulation real-time rotating speed according to simulation real-time torque operation;
the simulation angle operation unit is used for updating to obtain a simulation real-time angle of the rotor according to the simulation real-time rotating speed and the time parameter;
the simulation inductance operation unit receives the updated simulation real-time angle and operates again to obtain a simulation real-time inductance;
the simulation parameters comprise a rated current maximum value, and the simulated electric energy input parameters comprise a phase power output state and a phase input voltage;
the analog feedback current operation unit is provided with an analog feedback current target value,
the analog feedback current operation unit judges whether the phase power output state is on,
if the current is not switched on, setting the target value of the analog feedback current to be zero, setting the voltage of the analog winding to be a negative value of the phase input voltage, and calculating to obtain the current real-time increment step length according to the voltage of the analog winding, the time parameter and the analog real-time inductance;
if the current is switched on, setting the target value of the analog feedback current as the maximum value of the rated current, setting the voltage of the analog winding as the phase input voltage, and calculating according to the voltage of the analog winding, the time parameter and the analog real-time inductance to obtain the current real-time increment step length;
the original analog feedback current and the current real-time increment step length are added to obtain an analog feedback current, the analog feedback current is limited, the analog feedback current does not exceed the target value of the analog feedback current when the analog feedback current is increased, and the analog feedback current is not lower than the target value of the analog feedback current when the analog feedback current is decreased.
2. A simulation method of a reluctance machine according to claim 1, wherein the simulation parameters include inductance variation curve of the stator, the inductance variation curve varying according to real-time angle variation of the rotor;
and the simulated inductance operation unit obtains the simulated real-time inductance according to the corresponding condition of the simulated real-time angle in the inductance change curve.
3. The simulation method of a reluctance motor according to claim 2, wherein the simulated torque operation unit obtains the simulated real-time torque according to the corresponding condition of the simulated real-time angle on the inductance variation curve and the simulated feedback current operation.
4. A simulation method of a reluctance machine according to claim 3, wherein the simulation parameters include a simulated load torque, a friction coefficient and a simulated moment of inertia;
the simulation rotating speed computing unit computes to obtain a simulation rotating speed increment step according to the simulation real-time torque, the simulation load torque, the friction coefficient, the original simulation real-time rotating speed and the simulation rotational inertia;
and adding the original simulated real-time rotating speed and the simulated rotating speed increment step length to obtain the simulated real-time rotating speed.
5. The simulation method of the reluctance motor according to claim 4, wherein the simulation parameters include the number of poles of the rotor of the reluctance motor;
the simulation angle operation unit obtains a simulation angle step length according to the simulation real-time rotating speed, the simulation reluctance motor rotor pole number and the time parameter operation;
and adding the original simulation real-time angle and the simulation angle step length to obtain a simulation real-time angle.
6. The method of claim 5, wherein the reluctance machine is a multi-phase reluctance machine, and the simulation parameters further include phase angle intervals;
the simulation inductance calculation unit calculates the simulation real-time inductance of each phase according to the simulation real-time angle of each phase of the rotor;
the analog feedback current operation unit calculates to obtain analog feedback current of each phase according to the analog real-time inductance of each phase, the analog electric energy input parameter of each phase and the time parameter;
the simulation torque calculation unit calculates simulation real-time torque of each phase according to the simulation feedback current of each phase, and the simulation real-time torque of each phase is added to obtain total simulation torque;
the simulation rotating speed operation unit calculates to obtain a simulation real-time rotating speed according to the total simulation torque;
the simulation angle operation unit obtains a simulation angle step length, adds the original simulation real-time angle of one phase of the simulation angle step length with the value of the simulation angle step length to obtain a simulation real-time angle of one phase of the simulation angle step length, and obtains simulation real-time angles of the other two phases according to the simulation real-time angle of one phase of the simulation angle step length and each phase angle degree interval;
and the simulated inductance operation unit receives the updated simulated real-time angles of the phases and re-operates to obtain the simulated real-time inductance of each phase.
7. An embedded system, comprising a high frequency timer and a simulation method storing a reluctance machine according to any one of claims 1 to 6, wherein the high frequency timer provides a high frequency time parameter for the virtual operation model.
8. A method of operation, comprising:
inputting simulation parameters to an embedded system according to claim 7 to set a virtual operation model;
inputting analog electric energy input parameters to enable the virtual operation model to operate along with time parameters;
and acquiring the operation information of the simulated reluctance motor generated by the virtual operation model at regular time.
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| FR2839399A1 (en) * | 2002-05-06 | 2003-11-07 | Renault Sa | Simulation or emulation of variable-reluctance electrical machine, e.g. vehicle starter-generator, uses model of machine created from current and voltage sources and variable inductance, and function tables to adjust supply to model |
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| FR2839399A1 (en) * | 2002-05-06 | 2003-11-07 | Renault Sa | Simulation or emulation of variable-reluctance electrical machine, e.g. vehicle starter-generator, uses model of machine created from current and voltage sources and variable inductance, and function tables to adjust supply to model |
| CN107046381A (en) * | 2017-03-07 | 2017-08-15 | 湖南大学 | A kind of switched reluctance machines varied angle PI control methods, controller and governing system |
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