CN109061475B - Method, device, system and medium for simulating turn-to-turn short circuit fault of permanent magnet synchronous motor - Google Patents
Method, device, system and medium for simulating turn-to-turn short circuit fault of permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN109061475B CN109061475B CN201811294379.6A CN201811294379A CN109061475B CN 109061475 B CN109061475 B CN 109061475B CN 201811294379 A CN201811294379 A CN 201811294379A CN 109061475 B CN109061475 B CN 109061475B
- Authority
- CN
- China
- Prior art keywords
- turn
- short circuit
- permanent magnet
- synchronous motor
- magnet synchronous
- 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
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The embodiment of the invention relates to the field of motors, and discloses a method, a device, a system and a medium for simulating turn-to-turn short circuit fault of a permanent magnet synchronous motor. Wherein the method comprises the following steps: receiving parameters of a permanent magnet synchronous motor, and setting a permanent magnet synchronous motor turn-to-turn short circuit fault model based on the parameters of the permanent magnet synchronous motor, wherein the parameters of the permanent magnet synchronous motor comprise: the number of short circuit turns of turn-to-turn short circuit and the turn-to-turn short circuit resistance; measuring the line voltage of an output port of the power amplifier, and taking the line voltage as the input of the turn-to-turn short circuit fault model of the permanent magnet synchronous motor; resolving the permanent magnet synchronous motor turn-to-turn short circuit fault model to obtain the stator winding current and the rotor speed/position when the permanent magnet synchronous motor generates the turn-to-turn short circuit fault; and outputting the stator winding current to the power amplifier as a reference current of the power amplifier. The embodiment of the invention can flexibly set parameters such as turn-to-turn short circuit turns, short circuit resistance and the like.
Description
Technical Field
The embodiment of the invention relates to the field of motors, in particular to a method, a device and a system for simulating turn-to-turn short circuit fault of a permanent magnet synchronous motor and a computer readable storage medium.
Background
A Permanent Magnet Synchronous Motor (PMSM) is a Synchronous Motor having advantages of high power density and high reliability, and is widely used in many fields such as aerospace and electric vehicles. The turn-to-turn short circuit is a main fault of the permanent magnet synchronous motor.
In the prior art, a device for truly simulating the short-circuit fault of the motor rotor is proposed. The device comprises a plurality of groups of lead wires led out from an excitation coil of the engine rotor, wherein the plurality of groups of lead wires are respectively connected with a plurality of groups of corresponding carbon brushes at a non-shaft extension end or a shaft extension end of the rotor through a slip ring, and the plurality of groups of carbon brushes are respectively connected with a short circuit cabinet through the lead wires. A controllable contactor is arranged in the short-circuit cabinet and a rotor turn-to-turn short-circuit control button is correspondingly arranged in the short-circuit cabinet. The turn-to-turn short circuit control button is controlled to control the on and off of the controllable contactor so as to control the connection and the disconnection of different lead wires, and therefore controllable rotor turn-to-turn short circuit fault simulation is achieved.
The inventor of the present application finds that, in the above-described apparatus, by controlling the on/off of the controllable contactor, the number of short-circuit turns of turn-to-turn short circuit and the turn-to-turn short circuit resistance cannot be flexibly set, that is, it is difficult to flexibly simulate the turn-to-turn short circuit fault in the above-described simulation manner.
Disclosure of Invention
The invention aims to provide a method, a device and a system for simulating turn-to-turn short circuit faults of a permanent magnet synchronous motor and a computer readable storage medium, which can flexibly set parameters such as turn-to-turn short circuit turns, short circuit resistance and the like.
In order to solve the above technical problem, an embodiment of the present invention provides a method for simulating a turn-to-turn short circuit fault of a permanent magnet synchronous motor, including: receiving parameters of a permanent magnet synchronous motor, and setting a permanent magnet synchronous motor turn-to-turn short circuit fault model based on the parameters of the permanent magnet synchronous motor, wherein the parameters of the permanent magnet synchronous motor comprise: the number of short circuit turns of turn-to-turn short circuit and the turn-to-turn short circuit resistance; measuring the line voltage of an output port of the power amplifier, and taking the line voltage as the input of the turn-to-turn short circuit fault model of the permanent magnet synchronous motor; resolving the permanent magnet synchronous motor turn-to-turn short circuit fault model to obtain the stator winding current and the rotor speed/position when the permanent magnet synchronous motor generates the turn-to-turn short circuit fault; and outputting the stator winding current to the power amplifier as a reference current of the power amplifier.
The embodiment of the invention also provides a device for simulating turn-to-turn short circuit fault of the permanent magnet synchronous motor, which comprises: the receiving module is used for receiving the parameters of the permanent magnet synchronous motor and setting a permanent magnet synchronous motor turn-to-turn short circuit fault model based on the parameters of the permanent magnet synchronous motor, wherein the parameters of the permanent magnet synchronous motor comprise: the number of short circuit turns of turn-to-turn short circuit and the turn-to-turn short circuit resistance; the measuring module is used for measuring the line voltage of an output port of the power amplifier and is used as the input of the turn-to-turn short circuit fault model of the permanent magnet synchronous motor; the processing module is used for resolving the permanent magnet synchronous motor turn-to-turn short circuit fault model to obtain the stator winding current and the rotor speed/position when the permanent magnet synchronous motor generates the turn-to-turn short circuit fault; and the output module is used for outputting the stator winding current to the power amplifier to be used as a reference current of the power amplifier.
The embodiment of the invention also provides a system for simulating turn-to-turn short circuit fault of the permanent magnet synchronous motor, which comprises: an upper computer; a power amplifier; and a turn-to-turn short circuit fault model solver; the upper computer is used for inputting parameters of the permanent magnet synchronous motor to the inter-turn short circuit fault model resolver, and the parameters of the permanent magnet synchronous motor comprise: the number of short circuit turns of turn-to-turn short circuit and the turn-to-turn short circuit resistance; the power amplifier is used for receiving the reference current from the turn-to-turn short circuit fault model resolver and carrying out corresponding power amplification; the turn-to-turn short circuit fault model resolver is used for executing the turn-to-turn short circuit fault simulation method of the permanent magnet synchronous motor.
The embodiment of the invention also provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the method for simulating turn-to-turn short circuit fault of the permanent magnet synchronous motor.
Compared with the prior art, the method and the device have the advantages that the turn-to-turn short circuit fault is simulated by the turn-to-turn short circuit fault model resolver, and parameters of the permanent magnet synchronous motor such as the number of short circuit turns of turn-to-turn short circuit and turn-to-turn short circuit resistance can be flexibly set. And the power amplifier can be used for realizing the power level simulation of the turn-to-turn short circuit fault of the permanent magnet synchronous motor.
In addition, the permanent magnet synchronous motor parameters further include: the permanent magnet motor comprises a stator winding resistor, a stator d-axis inductor, a stator q-axis inductor, a stator 0-axis inductor, a permanent magnet flux linkage amplitude, a pole pair number, a rotational inertia, a friction coefficient, a load torque and a total number of turns of a one-phase stator winding.
In addition, before the receiving the parameters of the permanent magnet synchronous motor, the method further comprises: and pre-establishing a turn-to-turn short circuit fault model of the permanent magnet synchronous motor. Because the virtual turn-to-turn short circuit fault model of the permanent magnet synchronous motor is adopted to simulate the turn-to-turn short circuit fault of the permanent magnet synchronous motor, the simulation mode is more flexible.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
FIG. 1 is a schematic diagram of a permanent magnet synchronous motor turn-to-turn short circuit fault according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a calculation process of a PMSM turn-to-turn short circuit model according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a system for simulating turn-to-turn short circuit fault of a permanent magnet synchronous motor according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a solution process of the turn-to-turn short fault model solver of FIG. 3;
fig. 5 is a schematic flow chart of a method for simulating turn-to-turn short circuit fault of a permanent magnet synchronous motor according to an embodiment of the present invention;
fig. 6 is a schematic flow chart of a method for simulating turn-to-turn short circuit fault of a permanent magnet synchronous motor according to another embodiment of the present invention; and
fig. 7 is a schematic structural diagram of a simulation device of a winding-to-winding short circuit fault simulation method for a permanent magnet synchronous motor according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.
In order to facilitate understanding of the embodiment of the present invention, a turn-to-turn short circuit fault of the permanent magnet synchronous motor is first described. Fig. 1 is a schematic diagram of a turn-to-turn short circuit fault of a permanent magnet synchronous motor. As shown in fig. 1, the permanent magnet synchronous motor includes: the phase-a stator winding, the phase-b stator winding and the phase-c stator winding. In the illustration, the a-phase stator winding is short-circuited between turns, that is, the a-phase stator winding is short-circuited, so that it includes: normal part a1 and short-circuited part a 2. In the figure, RfIs a turn-to-turn short circuit resistance ifIs a turn-to-turn short circuit current ia、ibAnd icIs the stator winding current and n is the neutral point. It should be noted that fig. 1 only shows the case where the a-phase stator winding is in turn-to-turn short circuit, but in practice, the b-phase stator winding or the c-phase stator winding, or any two or three of the a-phase, b-phase and c-phase may be in turn-to-turn short circuit. In the embodiment of the present invention, only the failure of the a-phase stator winding is explained, and for other cases, similar analysis processes are provided, which are not described herein again.
Continuing with fig. 1 as an example, a calculation process of the permanent magnet synchronous motor turn-to-turn short circuit fault model in the situation of fig. 1 will be described. As shown in fig. 2, the calculation process of the turn-to-turn short circuit fault model according to the embodiment of the present invention includes:
step 201: establishing a stator winding voltage equation of the permanent magnet synchronous motor under the condition of turn-to-turn short circuit fault to obtain ua1、ua2、ubAnd uc。
Wherein u isbAnd ucStator winding voltages for phases b and c. u. ofa1And ua2Stator winding voltages for the normal and fault portions of the a-phase stator winding, respectively.
It should be noted that, when the permanent magnet synchronous motor has a turn-to-turn short circuit fault, the voltage u of the neutral point n isnNot 0, and therefore in the stator winding voltage equation aboveConsider un。
Step 202: from RfAnd ifTo obtain ua2。
Wherein R isfIs a turn-to-turn short circuit resistance ifIs the turn-to-turn short circuit current.
Step 203: for u is paireda1And ua2Are combined to obtain a-phase stator winding voltage ua。
Here, u is obtained according to step 201a1And ua2To obtain a-phase stator winding voltage ua。
Step 204: establishing a stator winding flux linkage equation of the permanent magnet synchronous motor under the condition of turn-to-turn short circuit fault to obtain psia1、Ψa2、ΨbAnd Ψc。
Therein, ΨbAnd ΨcThe stator winding flux linkage of the phases b and c. Ψa1And Ψa2Stator winding flux linkages of a normal portion and a fault portion of the a-phase stator winding, respectively.
Step 205: to psia1And Ψa2Merging to obtain a-phase stator winding flux linkage psia。
Step 206: according to ua2、ua、Ψa2And ΨaTo obtain ifIs described in (1).
Here, i is obtained from the results of step 202, step 203, step 204, and step 205fIs described in (1).
Step 207: are respectively paired with ua、ubAnd ucAnd Ψa、ΨbAnd ΨcPerforming coordinate transformation from abc coordinate system to dq0 coordinate system to obtain ud、uqAnd un。
Wherein u isdAnd uqFor the d-and q-axis components of the stator winding voltage, unIs the voltage of the neutral point.
Step 208: by udAnd uqIs calculated to obtain
And
wherein idAnd iqAre d-axis and q-axis components of the stator winding current, and
and
is idAnd iqThe derivatives are taken separately over time t.
Step 209: will be composed ofdAnd uqU of the representationaAnd unSubstitution into ifExpression to obtain
Wherein the content of the first and second substances,
is ifThe derivative is taken over time t.
Step 210: establishing an electromagnetic torque equation of the permanent magnet synchronous motor under the turn-to-turn short circuit fault by using the result obtained in the step 209 to obtain the electromagnetic torque Te。
Step 211: using the electromagnetic torque T obtained in step 210eEstablishing a motion equation of the permanent magnet synchronous motor to obtain
Wherein, ω isrIs the mechanical angular velocity of the permanent magnet synchronous motor,
is omegarThe derivative is taken over time t.
Step 212: for omegarIntegral is carried out to obtain the mechanical angle theta of the permanent magnet synchronous motorr。
Step 213: from omegarAnd thetarObtain permanent magnetThe electrical angular velocity ω and the electrical angle θ of the stepper motor.
The following describes a detailed process of the present invention, and for convenience of understanding, a turn-to-turn short circuit fault simulation system of a permanent magnet synchronous motor according to an embodiment of the present invention is described first.
The first embodiment of the invention relates to a system for simulating turn-to-turn short circuit fault of a permanent magnet synchronous motor. The specific structure is shown in fig. 3. As shown in fig. 3, the system 300 for simulating turn-to-turn short circuit fault of a permanent magnet synchronous motor includes: an upper computer 301, a power amplifier 302 and a turn-to-turn short circuit fault model resolver 303.
The turn-to-turn short circuit fault model solver 303 is connected to the upper computer 301 and the power amplifier 302, respectively.
The upper computer 301 is configured to send the parameters of the permanent magnet synchronous motor to the turn-to-turn short circuit fault model solver 303. Wherein, above-mentioned permanent magnet synchronous machine parameter includes: the number of short-circuit turns in turn-to-turn short-circuit and the turn-to-turn short-circuit resistance. Further, the parameters of the permanent magnet synchronous motor further include: the permanent magnet motor comprises a stator winding resistor, a stator d-axis inductor, a stator q-axis inductor, a stator 0-axis inductor, a permanent magnet flux linkage amplitude, a pole pair number, a rotational inertia, a friction coefficient, a load torque and a total number of turns of a one-phase stator winding.
After receiving the parameters of the permanent magnet synchronous motor, the inter-turn short circuit fault model solver 303 sets an inter-turn short circuit fault model by using the parameters of the permanent magnet synchronous motor.
Wherein the turn-to-turn short fault model solver 303 provides a reference current calculated in real time to the power amplifier and measures the line voltage at the output port of the power amplifier 302 for use in solving the turn-to-turn short fault model. Wherein the reference current provided to the power amplifier 302 is a stator winding current calculated by the turn-to-turn short fault model solver 303.
Specifically, the turn-to-turn short circuit fault model solver 303 calculates the turn-to-turn short circuit fault model based on the received parameters of the permanent magnet synchronous motor and the measured line voltage of the output port of the power amplifier 302, so as to obtain the stator winding current and the rotor speed/position when the turn-to-turn short circuit fault occurs in the permanent magnet synchronous motor. The stator winding current and the rotor speed/position when the permanent magnet synchronous motor has turn-to-turn short circuit fault are output as the simulation result of the turn-to-turn short circuit fault.
In the embodiment, the turn-to-turn short circuit fault is simulated by using the turn-to-turn short circuit fault model solver, and the permanent magnet synchronous motor parameters such as the number of short circuit turns of the turn-to-turn short circuit and the turn-to-turn short circuit resistance can be flexibly set in this way. And the power amplifier 302 can be used for realizing power level simulation of turn-to-turn short circuit faults of the permanent magnet synchronous motor. In addition, the turn-to-turn short circuit fault simulation system of the permanent magnet synchronous motor in the embodiment of the invention has no rotating mechanical parts and the like adopted in the existing mode, so that the test process is safer and more efficient.
The calculation process of the turn-to-turn short fault model solver 303 described above is described below to assist those skilled in the art in understanding the present invention. The calculation process of the inter-turn short circuit fault model solver 303 is mainly to obtain the stator winding current and the rotor speed/position when the inter-turn short circuit fault occurs in the permanent magnet synchronous motor.
Specifically, as shown in fig. 4, the method is a schematic diagram of a calculation process of the turn-to-turn short circuit fault model resolver, and includes the following steps:
step 401: setting id、iq、if、Te、ωr、θrω and θ are initialized to make model calculations.
Step 402: and obtaining the parameters of the permanent magnet synchronous motor set by the upper computer.
Step 403: and obtaining the line voltage of the output port of the power amplifier.
Step 404: converting the line voltage measured in step 403 into a phase voltage to obtain ua、ubAnd uc。
Step 405: will ua、ubAnd ucObtaining u through coordinate transformation from abc coordinate system to dq0 coordinate systemdAnd uq。
Step 406: according to
And
calculating to obtain id、iqAnd if. In this step, u obtained in step 405 is useddAnd uq。
Step 407: will idAnd iqObtaining i through coordinate transformation from dq0 coordinate system to abc coordinate systema、ibAnd ic。
Wherein ia、ibAnd icAs stator winding current, and to the power amplifier as a reference current for the power amplifier.
Step 408: calculating to obtain Te. In this step, i obtained in step 406 is usedf。
Step 409: t calculated according to step 408eAnd
omega is obtained by calculationr、θrω, and θ.
Wherein, ω isrAnd thetarAs the rotor speed/position of the simulated permanent magnet synchronous motor.
The structure of the winding-to-winding short circuit fault simulation system of the permanent magnet synchronous motor and the calculation process of the winding-to-winding short circuit fault model resolver in the winding-to-winding short circuit fault simulation system are described above. On the basis, the method and the device for simulating the turn-to-turn short circuit fault of the permanent magnet synchronous motor according to the embodiments of the present invention are described further, where the method for simulating the turn-to-turn short circuit fault of the permanent magnet synchronous motor can be executed by the turn-to-turn short circuit fault model solver, and accordingly, the device for simulating the turn-to-turn short circuit fault of the permanent magnet synchronous motor can also be implemented as the turn-to-turn short circuit fault model solver.
Specifically, a second embodiment of the present invention relates to a method for simulating a turn-to-turn short circuit fault of a permanent magnet synchronous motor, where a flow of the method is shown in fig. 5, and the method specifically includes:
Wherein, this permanent magnet synchronous machine parameter includes: the number of short-circuit turns in turn-to-turn short-circuit and the turn-to-turn short-circuit resistance.
Wherein, this permanent magnet synchronous machine parameter further includes: the permanent magnet motor comprises a stator winding resistor, a stator d-axis inductor, a stator q-axis inductor, a stator 0-axis inductor, a permanent magnet flux linkage amplitude, a pole pair number, a rotational inertia, a friction coefficient, a load torque and a total number of turns of a one-phase stator winding.
And 502, measuring the line voltage of an output port of the power amplifier, and using the line voltage as the input of a turn-to-turn short circuit fault model of the permanent magnet synchronous motor.
In addition, the calculation process of step 503 may refer to fig. 4, which is not described herein for brevity.
In the embodiment of the invention, the turn-to-turn short circuit fault is simulated by using the turn-to-turn short circuit fault model, and the permanent magnet synchronous motor parameters such as the number of short circuit turns of turn-to-turn short circuit and the turn-to-turn short circuit resistance can be flexibly set by the way. And the power amplifier can be used for realizing the power level simulation of the turn-to-turn short circuit fault of the permanent magnet synchronous motor.
A third embodiment of the present invention relates to a method for simulating turn-to-turn short circuit fault of a permanent magnet synchronous motor, and a flow chart thereof is shown in fig. 6. As shown in fig. 6, the third embodiment is substantially the same as the first embodiment, and mainly differs in that: in the third embodiment, before receiving the parameters of the permanent magnet synchronous motor, a permanent magnet synchronous motor turn-to-turn short circuit fault model is established in advance (step 500). The establishing of the turn-to-turn short circuit fault model of the permanent magnet synchronous motor in step 500 mainly includes a calculation process of the turn-to-turn short circuit fault model of the permanent magnet synchronous motor as shown in fig. 3. Since the related contents have been described in detail in the foregoing, they are not described in detail herein.
It should be noted that: the steps of the above methods are divided for clarity, and the implementation may be combined into one step or split some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included, which are all within the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.
After the above description of the method flow, the description of the inter-turn short circuit fault simulation apparatus of the permanent magnet synchronous motor according to the embodiment of the present invention is continued.
A fourth embodiment of the present invention relates to a permanent magnet synchronous motor turn-to-turn short circuit fault simulation apparatus, as shown in fig. 7, including:
a receiving module 701, configured to receive parameters of a permanent magnet synchronous motor, and set a permanent magnet synchronous motor turn-to-turn short circuit fault model based on the parameters of the permanent magnet synchronous motor, where the parameters of the permanent magnet synchronous motor include: the number of short circuit turns of turn-to-turn short circuit and the turn-to-turn short circuit resistance;
the measuring module 702 is used for measuring the line voltage of the output port of the power amplifier and is used as the input of the turn-to-turn short circuit fault model of the permanent magnet synchronous motor;
the processing module 703 is configured to calculate a turn-to-turn short circuit fault model of the permanent magnet synchronous motor, so as to obtain a stator winding current and a rotor speed/position when the turn-to-turn short circuit fault occurs in the permanent magnet synchronous motor. And
an output module 704, configured to output the stator winding current to the power amplifier as a reference current of the power amplifier.
In addition, the processing module 703 may pre-establish a winding-to-winding short circuit fault model of the permanent magnet synchronous motor.
It should be understood that the present embodiment is a system example corresponding to the second and third embodiments, and the present embodiment can be implemented in cooperation with the second embodiment. The related technical details mentioned in the second and third embodiments are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment.
It should be noted that each module referred to in this embodiment is a logical module, and in practical applications, one logical unit may be one physical unit, may be a part of one physical unit, and may be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, elements that are not so closely related to solving the technical problems proposed by the present invention are not introduced in the present embodiment, but this does not indicate that other elements are not present in the present embodiment.
A fifth embodiment of the present invention relates to a computer-readable storage medium storing a computer program. The computer program realizes the above-described method embodiments when executed by a processor.
That is, as can be understood by those skilled in the art, all or part of the steps in the method for implementing the embodiments described above may be implemented by a program instructing related hardware, where the program is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (8)
1. A method for simulating turn-to-turn short circuit fault of a permanent magnet synchronous motor is characterized by comprising the following steps:
receiving parameters of a permanent magnet synchronous motor, and setting a permanent magnet synchronous motor turn-to-turn short circuit fault model based on the parameters of the permanent magnet synchronous motor, wherein the parameters of the permanent magnet synchronous motor comprise: the number of short circuit turns of turn-to-turn short circuit and the turn-to-turn short circuit resistance;
measuring the line voltage of an output port of the power amplifier, and taking the line voltage as the input of the turn-to-turn short circuit fault model of the permanent magnet synchronous motor;
resolving the permanent magnet synchronous motor turn-to-turn short circuit fault model to obtain the stator winding current and the rotor speed/position when the permanent magnet synchronous motor generates the turn-to-turn short circuit fault; and
outputting the stator winding current to the power amplifier as a reference current for the power amplifier;
the method comprises the following steps of resolving a permanent magnet synchronous motor turn-to-turn short circuit fault model to obtain a stator winding current when the permanent magnet synchronous motor generates a turn-to-turn short circuit fault, and specifically comprises the following steps:
converting the line voltage to a phase voltage to obtain ua、ubAnd ucWherein said ua、ubAnd ucStator winding voltages of a phase a, a phase b and a phase c respectively;
subjecting said u toa、ubAnd ucObtaining u through coordinate transformation from abc coordinate system to dq0 coordinate systemdAnd uqWherein said udAnd uqD-axis and q-axis components of the stator winding voltage;
according to ud、uqAnd ifIs calculated to obtain
And
and then calculate to obtain idAnd iqWherein said idAnd iqFor d-and q-component currents of said stator winding current, ifIs the turn-to-turn short circuit current;
will be composed ofdAnd uqU of the representationa、ub、ucAnd the neutral point voltage u of the stator windingnSubstitution into ifExpression derivation
And then calculate to obtain if；
Will idAnd iqObtaining i through coordinate transformation from dq0 coordinate system to abc coordinate systema、ibAnd icWherein ia、ibAnd icIs the stator winding current;
the method for calculating the turn-to-turn short circuit fault model of the permanent magnet synchronous motor to obtain the speed/position of the rotor when the turn-to-turn short circuit fault occurs in the permanent magnet synchronous motor specifically comprises the following steps:
calculating the electromagnetic torque T of the permanent magnet synchronous motor under the turn-to-turn short circuit faulte；
By said electromagnetic torque TeTo obtain
Wherein ω isrThe mechanical angular velocity of the permanent magnet synchronous motor;
for omegarPerforming integration to obtain the mechanical angle theta of the permanent magnet synchronous motorr。
2. The method for simulating turn-to-turn short circuit fault of permanent magnet synchronous motor according to claim 1, wherein the parameters of permanent magnet synchronous motor further comprise:
the permanent magnet motor comprises a stator winding resistor, a stator d-axis inductor, a stator q-axis inductor, a stator 0-axis inductor, a permanent magnet flux linkage amplitude, a pole pair number, a rotational inertia, a friction coefficient, a load torque and a total number of turns of a one-phase stator winding.
3. The method for simulating turn-to-turn short circuit fault of permanent magnet synchronous motor according to claim 1, further comprising, before the receiving the parameters of permanent magnet synchronous motor:
pre-establishing a turn-to-turn short circuit fault model of the permanent magnet synchronous motor;
the method for establishing the turn-to-turn short circuit fault model of the permanent magnet synchronous motor in advance specifically comprises the following steps:
assuming that a-phase stator winding of the permanent magnet synchronous motor is subjected to turn-to-turn short circuit, wherein the a-phase stator winding comprises a normal winding a1 and a short-circuited winding a 2;
establishing a stator winding voltage equation of the permanent magnet synchronous motor under the condition of turn-to-turn short circuit fault to obtain ua1、ua2、ubAnd ucWherein u isbAnd ucStator winding voltage for b-phase and c-phase, ua1And ua2Stator winding voltages for normal winding portion and fault winding portion of a-phase;
for u is paireda1And ua2The voltage u of the a-phase stator winding is obtained by combinationa；
From RfAnd ifTo represent ua2Wherein R isfFor turn-to-turn short circuit resistance
The stator winding flux linkage equation of the permanent magnet synchronous motor under the turn-to-turn short circuit fault is established to obtain psia1、ψa2、ψbAnd psicWherein ψbAnd psicStator winding flux linkage of b-phase and c-phasea1And psia2Stator winding flux linkages of a normal winding part and a fault winding part of the a-phase;
for psia1And psia2The magnetic chains psi of the a-phase stator winding are obtained by combinationa；
For u is paireda2、ua、ψa2And psiaIs finished to obtain ifAn expression;
are respectively paired with ua、ubAnd ucAnd psia、ψbAnd psicConverting the coordinates from the abc coordinate system to the dq0 coordinate system to obtain ud、uqAnd unWherein u isdAnd uqFor the d-and q-axis components of the stator winding voltage, unIs the neutral point voltage;
by ud、uqAnd ifIs calculated to obtain
And
wherein idAnd iqD-axis and q-axis components of the stator winding current;
will be composed ofdAnd uqU of the representationaAnd unSubstitution into ifExpression derivation
An electromagnetic torque equation of the permanent magnet synchronous motor under the turn-to-turn short circuit fault is established to obtain electromagnetic torque Te；
Establishing a motion equation of the permanent magnet synchronous motor to obtain
For omegarPerforming integration to obtain the mechanical angle theta of the permanent magnet synchronous motorr；
From omegarAnd thetarAnd obtaining the electrical angular velocity omega and the electrical angle theta of the permanent magnet synchronous motor.
4. The utility model provides a PMSM interturn short circuit fault analogue means which characterized in that includes:
the receiving module is used for receiving the parameters of the permanent magnet synchronous motor and setting a permanent magnet synchronous motor turn-to-turn short circuit fault model based on the parameters of the permanent magnet synchronous motor, wherein the parameters of the permanent magnet synchronous motor comprise: the number of short circuit turns of turn-to-turn short circuit and the turn-to-turn short circuit resistance;
the measuring module is used for measuring the line voltage of an output port of the power amplifier and is used as the input of the turn-to-turn short circuit fault model of the permanent magnet synchronous motor;
the processing module is used for resolving the permanent magnet synchronous motor turn-to-turn short circuit fault model to obtain the stator winding current and the rotor speed/position when the permanent magnet synchronous motor generates the turn-to-turn short circuit fault; and
the output module is used for outputting the stator winding current to the power amplifier to serve as a reference current of the power amplifier;
the processing module is specifically configured to:
converting the line voltage to a phase voltage to obtain ua、ubAnd ucWherein said ua、ubAnd ucStator winding voltages of a phase a, a phase b and a phase c respectively;
subjecting said u toa、ubAnd ucObtaining u through coordinate transformation from abc coordinate system to dq0 coordinate systemdAnd uqWherein said udAnd uqD-axis and q-axis components of the stator winding voltage;
according to ud、uqAnd ifIs calculated to obtain
And
and then calculate to obtain idAnd iqWherein said idAnd iqFor d-and q-component currents of said stator winding current, ifIs the turn-to-turn short circuit current;
will be composed ofdAnd uqU of the representationa、ub、ucAnd unSubstitution into ifExpression derivation
And then calculate to obtain if(ii) a Will idAnd iqObtaining i through coordinate transformation from dq0 coordinate system to abc coordinate systema、ibAnd icWherein ia、ibAnd icIs the stator winding current;
calculating the electromagnetic torque T of the permanent magnet synchronous motor under the turn-to-turn short circuit faulte；
By said electromagnetic torque TeTo obtain
Wherein ω isrThe mechanical angular velocity of the permanent magnet synchronous motor;
for omegarPerforming integration to obtain the mechanical angle theta of the permanent magnet synchronous motorr。
5. The PMSM turn-to-turn short circuit fault simulation device of claim 4, wherein the PMSM parameters further include:
the permanent magnet motor comprises a stator winding resistor, a stator d-axis inductor, a stator q-axis inductor, a stator 0-axis inductor, a permanent magnet flux linkage amplitude, a pole pair number, a rotational inertia, a friction coefficient, a load torque and a total number of turns of a one-phase stator winding.
6. The PMSM inter-turn short circuit fault simulation device of claim 4, wherein the processing module is further configured to pre-establish the PMSM inter-turn short circuit fault model.
7. A permanent magnet synchronous motor turn-to-turn short circuit fault simulation system is characterized by comprising:
an upper computer;
a power amplifier;
and, a turn-to-turn short circuit fault model solver;
the upper computer is used for inputting parameters of the permanent magnet synchronous motor to the inter-turn short circuit fault model resolver, and the parameters of the permanent magnet synchronous motor comprise: the number of short circuit turns of turn-to-turn short circuit and the turn-to-turn short circuit resistance;
the power amplifier is used for receiving the reference current from the turn-to-turn short circuit fault model resolver and carrying out corresponding power amplification;
the turn-to-turn short circuit fault model solver is used for executing the turn-to-turn short circuit fault simulation method of the permanent magnet synchronous motor according to any one of claims 1-3.
8. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the method for simulation of turn-to-turn short circuit fault of a permanent magnet synchronous motor according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811294379.6A CN109061475B (en) | 2018-11-01 | 2018-11-01 | Method, device, system and medium for simulating turn-to-turn short circuit fault of permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811294379.6A CN109061475B (en) | 2018-11-01 | 2018-11-01 | Method, device, system and medium for simulating turn-to-turn short circuit fault of permanent magnet synchronous motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109061475A CN109061475A (en) | 2018-12-21 |
| CN109061475B true CN109061475B (en) | 2021-09-10 |
Family
ID=64768019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811294379.6A Active CN109061475B (en) | 2018-11-01 | 2018-11-01 | Method, device, system and medium for simulating turn-to-turn short circuit fault of permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109061475B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531205B (en) * | 2019-08-23 | 2021-05-28 | 华北电力科学研究院有限责任公司 | Method and device for diagnosing and positioning turn-to-turn short circuit fault of generator rotor |
| CN113394922B (en) | 2020-03-13 | 2022-06-14 | 中车永济电机有限公司 | Permanent magnet motor adjusting method, device, equipment and storage medium |
| CN113742903B (en) * | 2021-08-19 | 2023-06-23 | 安徽科技学院 | Permanent magnet synchronous motor fault detection and identification method based on digital twin technology |
| CN114035126B (en) * | 2021-10-25 | 2022-07-26 | 电子科技大学 | Method for determining turn number of turn-to-turn short circuit of permanent magnet synchronous motor winding in off-line state |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110089954A1 (en) * | 2009-10-16 | 2011-04-21 | Industrial Technology Research Institute | Station for detecting winding products and method for detecting inter-turn short circuit |
| CN202720302U (en) * | 2012-07-27 | 2013-02-06 | 江苏省电力公司南京供电公司 | Simulation system for fault phenomena of turn-to-turn short circuit and insulating property reduction of winding |
| CN103530442A (en) * | 2013-09-16 | 2014-01-22 | 西南交通大学 | Alternating-current asynchronous traction motor stator winding inter-turn short circuit fault modeling simulation method |
| CN103595328A (en) * | 2013-11-11 | 2014-02-19 | 中广核工程有限公司 | Control method and system of permanent magnet synchronous motor |
| CN106019148A (en) * | 2016-05-16 | 2016-10-12 | 安徽大学 | Permanent magnet synchronous motor turn-to-turn short circuit fault diagnosis method based on flux linkage observation |
| CN106292629A (en) * | 2016-08-18 | 2017-01-04 | 南京航空航天大学 | A kind of high ferro traction electric machine combined failure analogy method |
| CN106292634A (en) * | 2016-08-27 | 2017-01-04 | 上海科梁信息工程股份有限公司 | Switching power amplifying device and simulation Variable flow control method |
| CN206004543U (en) * | 2016-08-27 | 2017-03-08 | 上海科梁信息工程股份有限公司 | Power amplifier device |
| CN107167695A (en) * | 2017-06-08 | 2017-09-15 | 重庆大学 | The permagnetic synchronous motor interturn short-circuit failure diagnosing method monitored based on Distribution of Magnetic Field |
-
2018
- 2018-11-01 CN CN201811294379.6A patent/CN109061475B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110089954A1 (en) * | 2009-10-16 | 2011-04-21 | Industrial Technology Research Institute | Station for detecting winding products and method for detecting inter-turn short circuit |
| CN202720302U (en) * | 2012-07-27 | 2013-02-06 | 江苏省电力公司南京供电公司 | Simulation system for fault phenomena of turn-to-turn short circuit and insulating property reduction of winding |
| CN103530442A (en) * | 2013-09-16 | 2014-01-22 | 西南交通大学 | Alternating-current asynchronous traction motor stator winding inter-turn short circuit fault modeling simulation method |
| CN103595328A (en) * | 2013-11-11 | 2014-02-19 | 中广核工程有限公司 | Control method and system of permanent magnet synchronous motor |
| CN106019148A (en) * | 2016-05-16 | 2016-10-12 | 安徽大学 | Permanent magnet synchronous motor turn-to-turn short circuit fault diagnosis method based on flux linkage observation |
| CN106292629A (en) * | 2016-08-18 | 2017-01-04 | 南京航空航天大学 | A kind of high ferro traction electric machine combined failure analogy method |
| CN106292634A (en) * | 2016-08-27 | 2017-01-04 | 上海科梁信息工程股份有限公司 | Switching power amplifying device and simulation Variable flow control method |
| CN206004543U (en) * | 2016-08-27 | 2017-03-08 | 上海科梁信息工程股份有限公司 | Power amplifier device |
| CN107167695A (en) * | 2017-06-08 | 2017-09-15 | 重庆大学 | The permagnetic synchronous motor interturn short-circuit failure diagnosing method monitored based on Distribution of Magnetic Field |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109061475A (en) | 2018-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109061475B (en) | Method, device, system and medium for simulating turn-to-turn short circuit fault of permanent magnet synchronous motor | |
| Alvarez-Gonzalez et al. | Real-time hardware-in-the-loop simulation of permanent-magnet synchronous motor drives under stator faults | |
| CN107359837B (en) | Permanent magnet synchronous motor torque control method based on sliding mode observer and active disturbance rejection | |
| Shao et al. | Fault-tolerant control of position signals for switched reluctance motor drives | |
| CN110208642B (en) | Method and system for simulating degradation process of turn-to-turn short circuit fault of stator of permanent magnet synchronous motor | |
| CN103472312B (en) | Testing method for iron core loss of alternating-current permanent magnet motors | |
| Hoang et al. | Direct torque control of permanent magnet brushless AC drive with single‐phase open‐circuit fault accounting for influence of inverter voltage drop | |
| CN110726933A (en) | Fault diagnosis method, system and device of permanent magnet synchronous motor and readable medium | |
| CN110098773B (en) | Permanent magnet synchronous motor parameter identification method using least square method | |
| Martinez et al. | Enhancement of permanent-magnet synchronous machines torque estimation using pulsating high-frequency current injection | |
| CN106972806A (en) | A kind of open circuit fault tolerant control method for the fault-tolerant interior permanent magnet machines of three-phase for considering reluctance torque | |
| Goncalves et al. | Synchronous reluctance motor drive for electric vehicles including cross-magnetic saturation | |
| Jannati et al. | Speed sensorless fault-tolerant drive system of 3-phase induction motor using switching extended kalman filter | |
| CN115021638A (en) | Electromagnetic transient modeling method, system and equipment of efficient synchronous machine | |
| Lu et al. | A novel two-axis theory-based experimental approach towards determination of magnetization characteristics of line-start permanent magnet synchronous machines | |
| Lu et al. | Determination of High-Frequency $ d $-and $ q $-axis Inductances for Surface-Mounted Permanent-Magnet Synchronous Machines | |
| Kim et al. | Circulating current calculation using fault modeling of IPM type BLDC motor of inter-turn fault | |
| Otava et al. | Interior permanent magnet synchronous motor stator winding fault modelling | |
| CN114977165A (en) | Synchronous machine electromagnetic transient modeling method, system and equipment based on saturation effect | |
| Chen et al. | Separation and comparison of average torque in five‐phase IPM machines with distributed and fractional slot concentrated windings | |
| CN110829929A (en) | Motor static initial angle positioning method and device and motor equipment | |
| Babel et al. | Parametric sensitivity in the analysis and control of permanent magnet synchronous machines | |
| CN110635728B (en) | Parameter identification method in permanent magnet synchronous motor position sensorless control | |
| Ayala et al. | Modelling the flux-linkage in permanent magnet synchronous machines | |
| Kürüm et al. | Estimation of parameters for surface mounted permanent magnet synchronous motors |
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 | ||
| CB02 | Change of applicant information |
Address after: Room 201, building 6, 829 Yishan Road, Xuhui District, Shanghai 200233 Applicant after: Shanghai Keliang Information Technology Co.,Ltd. Address before: Room 201, building 6, 829 Yishan Road, Xuhui District, Shanghai 200233 Applicant before: SHANGHAI KELIANG INFORMATION ENGINEERING Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |