CN210691770U - Networked real-time control power electronic and motor control experimental device - Google Patents
Networked real-time control power electronic and motor control experimental device Download PDFInfo
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Abstract
The utility model discloses a networked real-time control power electronic and motor control experimental device, which relates to the field of power electronic and motor control, and comprises a computer provided with MATLAB/Simulink software, an HIL data acquisition card, a motor driving cabinet, different types of motors and a high-performance router; the user can compile different control programs for controlling power electronics and a motor in MATLAB/Simulink simulation software, and configure the IP address of the host connected with the controlled equipment when the control programs are compiled, so that other computer hosts in the local area network can remotely control the experimental equipment through the local area network, the problem that only one experimental device can be controlled by one computer in the traditional experimental equipment is solved, the experimental efficiency can be improved, and the purchasing cost of the experimental equipment can be reduced; meanwhile, a semi-physical closed-loop simulation can be formed by combining an external hardware circuit, so that control experiments of various basic power electronics and different motors can be completed.
Description
Technical Field
The utility model relates to a power electronics, motor control field, especially a networking real time control's power electronics and motor control experimental apparatus.
Background
The power electronics is a discipline for controlling and converting electric energy by using power electronic devices, and is a cross discipline among three fields of power, electronics and control; and the experimental teaching equipment of this branch of academic or vocational study of present university all is comparatively simple, and the experiment content is less, often gives first place to the verification experiment, and scientific research usage is compromise to few experimental facilities of teaching, can't satisfy the cultivation of school to student's comprehensiveness, research and development nature, advanced learning ability. Thereby causing the user to be unable to exert his own subjective initiative and creative thinking. Moreover, for the traditional experimental equipment of colleges and universities, a computer host is generally matched with one set of experimental equipment, the purchase quantity of the experimental equipment is limited by the amount of money of schools, and several students often need to share one experimental equipment, so that the experiment efficiency of students is reduced. This reduces the efficiency of the experiment when the experimental equipment is insufficient.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the shortcoming of prior art is overcome, provide a networked real-time control's power electronics and motor control experimental apparatus, the user can compile power electronics and motor control's different control program in MATLAB/Simulink simulation software, and dispose the IP address of the equipment of being controlled and link to the host computer when compiling the control program, other computer host computers in the LAN just can pass through LAN remote control experimental facilities, solve the problem that a computer can only control an experimental apparatus in traditional experimental facilities, and then can improve experimental efficiency, reduce the cost of experimental facilities purchase; meanwhile, a semi-physical closed-loop simulation can be formed by combining an external hardware circuit, so that control experiments of various basic power electronics and different motors can be completed.
The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme:
a networked real-time control power electronic and motor control experimental device comprises a controlled computer, a local area network consisting of a plurality of main control computers, an HIL data acquisition card, a motor driving cabinet, a motor and a router;
the HIL data acquisition card comprises a digital I/O port, a PWM signal output port, a coding signal input port, a coding signal output port, an analog signal input port and an analog signal output port;
the motor driving cabinet comprises a PWM control signal isolation input port, a voltage and current measuring port, an inversion voltage output port, an encoder signal input/output port, a unidirectional rectification output port and a motor encoding signal output port;
the motor comprises a direct current motor, a single-phase alternating current motor and a three-phase alternating current motor, wherein the direct current motor, the single-phase alternating current motor and the three-phase alternating current motor are respectively provided with a motor encoder signal output port and a motor driving voltage port;
the controlled computer is connected with a plurality of main control computers through a router, and the HIL data acquisition card is connected with the controlled computer;
transmitting a real-time operation instruction of a control program compiled in controlled computer simulation software to a motor driving cabinet through an HIL data acquisition card, and feeding operation data of a motor or voltage and current value data acquired in the motor driving cabinet after inversion back to the program compiled by the controlled computer simulation software in real time so as to form hardware-in-loop simulation;
an inversion voltage output port of the motor driving cabinet is connected to a motor driving voltage port of the three-phase alternating current motor, a motor encoder signal output port of the three-phase alternating current motor is connected to an encoder signal input output port of the motor driving cabinet, and the motor driving cabinet converts an encoding signal of the motor into a digital signal which is convenient to read by a computer;
the digital input port of the motor driving cabinet is connected with the digital I/O port of the HIL data acquisition card and is used for realizing that the digital I/O port of the HIL data acquisition card is controlled by a program in simulation software to output PWM waves for power electronic correlation transformation;
an analog signal input port of the HIL data acquisition card is connected with a voltage and current measuring port of the motor driving cabinet and is used for feeding back voltage and current values converted by power electronics of each basic module of the driving cabinet unit to form a closed loop so as to obtain expected electric energy parameters;
the code signal input port of the HIL data acquisition card is connected with the code signal output port of the motor driving cabinet, the running data of the motor is acquired to the controlled computer through the code input port of the HIL data acquisition card, so that the running data of the motor is read by a program in the simulation software, the motor is controlled to rotate according to an expected rule better, and a related experiment of motor control is completed.
As a further preferred scheme of the networked real-time control power electronics and motor control experimental apparatus of the present invention, the controlled computer and the main control computer adopt a computer equipped with MATLAB/Simulink software.
As the utility model relates to a networking real-time control's power electronics and motor control experimental apparatus's further preferred scheme, HIL data acquisition card and controlled computer link to each other and are compatible with MATLAB/Simulink software through the data line.
The utility model adopts the above technical scheme to compare with prior art, have following technological effect:
1. the utility model discloses the user can compile power electronics and motor control's different control program in MATLAB/Simulink simulation software to dispose the IP address of the continuous host computer of controlled equipment when compiling control program, other computer host computers in the LAN just can pass through LAN remote control experimental facilities, solve the problem that a computer can only control an experimental apparatus in traditional experimental facilities, and then can improve experimental efficiency, reduce the cost of experimental facilities purchase; meanwhile, a semi-physical closed-loop simulation can be formed by combining an external hardware circuit, so that control experiments of various basic power electronics and different motors are completed;
2. the utility model discloses utilize HIL data acquisition card can accomplish real-time operation, emulation, not only can accomplish to use controlled computer independent control outside hardware circuit, it is low to avoid the experiment efficiency when also can doing many people to do the experiment, can many master control computers remote control respectively and controlled computer outside continuous hardware circuit, thereby accomplish the experiment, also obtain the purchase reduce cost for experimental facilities, the user can also put the key on the control algorithm compiling and research in power electronics or motor control field, and control program is directly compiled in MATLAB/Simulink with forms such as S function, M file, the module in the Simulink module storehouse, have the advantage such as programming is directly perceived, convenience, can accomplish the basic experiment of different disciplines; the experimental device is suitable for teaching and scientific research of power electronics and motor control courses.
Drawings
Fig. 1 is a schematic composition diagram of each module provided in the embodiment of the present invention;
FIG. 2 is a flow chart of an embodiment of the present invention for performing a power electronic basic experiment;
fig. 3 is a flow chart of the embodiment of the present invention, which can complete the basic experiment of motor control.
The numbers in the figures are specified below: 1-a controlled computer, 2-an HIL data acquisition card, 3-an analog signal input port, 4-an analog signal output port, 5-a coding signal input port, 6-a coding signal output port, 7-a digital I/O port, 8-a PWM signal output port, 9-a motor driving cabinet, 10-a PWM control signal isolation input port, 11-a voltage and current measuring port, 12-an inversion voltage output port, 13-an encoder signal input output port, 14-a one-way rectification output port, 15-a motor coding signal output port, 16-a motor driving voltage port, 17-a high-performance router and 18-a master control computer.
Detailed Description
The technical scheme of the utility model is further explained in detail with the attached drawings as follows:
in the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In order to thoroughly understand the present invention, detailed steps and detailed structures will be provided in the following description so as to explain the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below.
The embodiment provides a networked real-time simulation semi-physical motor control and power electronic experiment device and an experiment method, which mainly comprise a computer provided with MATLAB/Simulink software, an HIL data acquisition card, a motor driving cabinet, different types of motors, a high-performance router and the like, as shown in FIG. 1.
In the HIL data acquisition card 2 shown in fig. 1, there are digital I/O ports 7, 8 (digital I/O port 7 and PWM signal output 8), coded signal input/output ports 5, 6 (coded signal input port 5, coded signal output port 6), and analog signal input/output ports 3, 4 (analog signal input port 3, analog signal output port 4). And the HIL data acquisition card can be connected with a computer host through a data line and is compatible with MATLAB/Simulink software, each input/output port of the HIL data acquisition card can be programmed and controlled in the MATLAB/Simulink, and when the simulation software runs, a hardware-in-loop simulation can be formed with an external hardware circuit.
In fig. 1, the motor driving cabinet 9 includes a single-phase power input module (power input of the driving cabinet), a single-phase rectification module, a three-phase full-bridge inversion module, an input control signal isolation module, a voltage and current detection module after inversion, and an input/output port module of an encoder signal, wherein each module is provided with a corresponding interface to connect a control signal, and a corresponding circuit schematic diagram is drawn outside each corresponding module of the motor driving cabinet, so that a user can understand the module conveniently. Namely a PWM control signal isolation input port 10, a voltage and current measuring port 11, an inversion voltage output port 12, an encoder signal input output port 13, a unidirectional rectification output port 14 and a motor encoding signal output port 15;
the different types of motors are direct current motors, single-phase alternating current motors and three-phase alternating current motors with a motor encoder signal output port 15 and a motor driving voltage port 16.
The high-performance router, as shown in fig. 1 as 17, is mainly used to provide a local area network for the experimental apparatus, and is used for networked control of the experimental apparatus.
As shown in figure 1, an HIL data acquisition card 2 is connected with a controlled computer 1 in a local area network, and each input/output port of the HIL data acquisition card 2 is connected to each basic circuit module on a motor driving cabinet 9, so that different experiments are completed.
In fig. 1, a controlled computer 1 can transmit a real-time running instruction of a control program written in Simulink simulation software in the controlled computer to a motor driving cabinet 9 through an HIL data acquisition card 2, and feed back information returned by a motor encoder output port 14 or a numerical value collected from a voltage and current measuring port 11 in the motor driving cabinet 9 to the program written by the simulation software in real time, so that a link is played, and hardware-in-loop simulation is formed.
In fig. 1, a coded signal input port 5 on an HIL data acquisition card 2 is connected with a coded signal output port 14 of a motor control drive cabinet unit, and running data of a motor is acquired into a computer host through the coded signal input port on the acquisition card, so that a program in Simulink simulation software can read the running data of the motor, the motor is controlled to rotate according to an expected rule better, and a related experiment of motor control is completed; the value of the voltage and current detection port 11 after inversion on the motor drive cabinet can also be returned to the program compiled in Simulink through the analog signal input port 3 on the data acquisition card 2 to form feedback; when a power electronic basic experiment is performed, the inverter voltage output end 12 can output expected electric energy parameters, so that the electronic basic experiment is completed.
The utility model discloses a realize carrying out the long-range completion power electronics experiment of networking in the LAN, the method of taking as follows:
the embodiment is used as a teaching experiment device for power electronics and different types of motor control subjects. Compare with current experiment power electronics, the relevant experimental facilities of motor control, the utility model has the advantages of it is unique, can carry out remote operation simultaneously in the basic experiment of accomplishing corresponding subject, can improve user's experimental efficiency to and the purchasing cost of effectual reduction experimental facilities.
As shown in fig. 1, a digital input port 10 of a motor driving cabinet 9 is connected with a digital I/O port 8 of an HIL data acquisition card, so that the digital I/O port of the HIL data acquisition card is controlled by a program in Simulink to output a PWM wave for power electronic correlation conversion; the analog signal input port 3 of the HIL data acquisition card 2 is connected with the voltage and current measuring port 11 of the motor driving cabinet 9, and the voltage and current values converted by power electronics of each basic module of the driving cabinet unit can be fed back to form a closed loop, so that expected electric energy parameters can be obtained.
The high performance router 17 shown in fig. 1 is opened to provide a lan environment for the embodiment of the present invention, so that the controlled computer is connected to the lan established by the high performance router, and MATLAB/Simulink software is installed in the controlled computer, so that the controlled computer can control external hardware devices by itself,
when multiple people are needed for the experiment, the master computer 18 shown in fig. 1 needs to be connected to the same lan as the controlled computer. The master control computer remotely controls external hardware equipment connected with the controlled computer through a local area network.
At this time, the command prompt window of the controlled computer needs to be opened, and an ipconfig command is input in the interface, so as to obtain the IP address of the controlled computer.
Further, a command prompt window is opened in the control computer, and ping (network diagnosis tool) is used in the interface, specifically: ping space IP address (IP address of the controlled computer), after the command is input, whether the two computers are communicated can be checked through a command prompt window. The same method is used for checking other main control computers.
And opening the master control computer, opening MATLAB/Simulink software, and writing an algorithm program/model on a software interface of the MATLAB/Simulink by using a corresponding tool kit. The model building is completed, the IP address of the controlled computer is configured in the compiled Simulink model, an executable file can be generated when the master control computer compiles and simulates, the executable file is transmitted to the controlled computer through a local area network, at the moment, the controlled computer plays the role of a lower computer, MATLAB/Simulink software of the controlled computer sends instructions to each input/output port of the HIL data acquisition card, and then other hardware circuits connected with the data acquisition card are controlled to form an experimental device for semi-physical real-time simulation, so that an external hardware circuit connected with the controlled computer in a remote mode is realized, and the experiment is completed.
Further, as a teaching and scientific research experimental device for the power electronics discipline, the embodiment is convenient for users to carry out different experiments, corresponding control interfaces are reserved outside each circuit module of the machine control cabinet unit 9 in fig. 1, and the users only need to carry out different line connections on the external circuits to form different experimental circuits. If other related experiments of power electronics need to be completed, other basic circuit modules can be added to the motor driving cabinet.
The PWM signal output by the HIL data acquisition card 2 needs to be connected to the external interface 10 of the control signal isolation module of the motor drive cabinet 9, and then converted in the power electronic experiment. The purpose is to effectively protect the HIL data acquisition card 2 and the controlled computer 1 when the rear-stage driving circuit fails.
The controlled computer 1 is connected with the HIL data acquisition card 2, and the controlled computer can use Simulink software to write a program to control each input/output port on the HIL data acquisition card, so that each input/output port of the data acquisition card is connected to a control signal interface of each basic module of the motor drive cabinet, and further different power electronic experiments can be independently completed.
Furthermore, the embodiment can also remotely complete the experiment by multiple persons and time intervals, the user can use other main control computers in the local area network and the controlled computer network ping to complete the experiment, a control program for completing the experiment is compiled on the main control computer, the IP address of the controlled computer is configured in a model compiled by Simulink, then the compiling and the simulation are clicked, the Simulink software can generate an executable file, the executable file is transmitted to the controlled computer through the local area network, the controlled computer controls the input and output ports of the HIL data acquisition card, and then different modules of the motor driving cabinet are controlled, and different experiments of power electronics are remotely completed.
Specific experiments that can be performed include: the working flow of the power electronic experiments such as single-phase alternating current inversion, three-phase alternating current inversion, variable frequency power supply and the like is shown in figure 2.
Furthermore, the basic experiment related to motor control can be completed by adding different types of motors at the output ends of the rectification module, the single-phase inversion module and the three-phase inversion module of the motor driving cabinet. In the embodiment, the three-phase alternating current motor is remotely controlled, and the adopted method is as follows:
an inverter voltage output port 14 of the motor driving cabinet 9 shown in fig. 1 is connected to a motor driving voltage port 16 of a three-phase alternating current motor, a motor coding signal output port 15 is connected to a coding signal input port output port 13 of the motor driving cabinet, and the motor driving cabinet converts a coding signal of the motor into a digital signal which is convenient for a computer to read.
The coded signal input port 5 of the HIL data acquisition card is connected with the coded signal output port 13 of the motor driving cabinet, so that the running data of the motor is fed back to a Simulink software program to form closed-loop control, the control program can output SPWM waveforms with different duty ratios to control the voltage amplitude and the frequency parameter value output by the three-phase inverter circuit, the motor can be better controlled to run, and the motor can rotate according to an expected rule.
Furthermore, the experiment can be remotely completed by using other main control computers in a local area network and a controlled computer network ping, a control program for completing the experiment is compiled on the main control computer, an IP address of the controlled computer is configured in a model compiled by Simulink, then compiling and simulation are clicked, the Simulink software can generate an executable file, the executable file is transmitted to the controlled computer through the local area network, the input and output ports of the HIL data acquisition card are controlled by the controlled computer, the data acquired by the HIL data acquisition card is transmitted to the main control computer through the local area network, the three-phase alternating current motor is further controlled to rotate, and different experiments controlled by the three-phase alternating current motor are remotely completed. Therefore, control experiments of different types of motors are completed.
Specific experiments that can be performed are: the method can be used for automatic control experiments (closed-loop control of constant rotating speed) of direct current motors, single-phase alternating current motors and three-phase alternating current motors, and can be used for measuring rotating speeds, starting voltages, starting currents and the like of different types of motors. The working flow is shown in fig. 3.
The utility model provides an in the embodiment, when many people tested, when user A when carrying out the simulation of long-range experiment, user B can carry out thinking, the writing of procedure on own master control computer. After the user A finishes, the user B can immediately perform compiling, simulation and verification of the experiment after configuring the IP address, and the user of the main control computer can also use a scope (oscilloscope) in Simulink simulation software to observe the experiment effect of the experiment hardware circuit in real time. Many people experiment analogize in proper order, the efficiency of experiment is done to improvement user that can be great, also can reduce the purchasing cost of experimental facilities. Therefore, the networked real-time simulation semi-physical motor control and power electronic experimental device and the experimental method are the experimental device suitable for teaching and scientific research of power electronics and motor control courses.
The above description is directed to the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; the person skilled in the art can apply the method and the technical content disclosed above without departing from the scope of the invention, and can make many possible variations and modifications to the technical solution of the invention, or modify equivalent embodiments with equivalent variations, without affecting the essence of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still fall within the protection scope of the technical solution of the present invention, where the technical entity does not depart from the content of the technical solution of the present invention.
Claims (3)
1. The utility model provides a networked real-time control's power electronics and motor control experimental apparatus which characterized in that: the system comprises a controlled computer, a local area network consisting of a plurality of main control computers, an HIL data acquisition card, a motor driving cabinet, a motor and a router;
the HIL data acquisition card comprises a digital I/O port, a PWM signal output port, a coding signal input port, a coding signal output port, an analog signal input port and an analog signal output port;
the motor driving cabinet comprises a PWM control signal isolation input port, a voltage and current measuring port, an inversion voltage output port, an encoder signal input/output port, a unidirectional rectification output port and a motor encoding signal output port;
the motor comprises a direct current motor, a single-phase alternating current motor and a three-phase alternating current motor, wherein the direct current motor, the single-phase alternating current motor and the three-phase alternating current motor are respectively provided with a motor encoder signal output port and a motor driving voltage port;
the controlled computer is connected with a plurality of main control computers through a router, and the HIL data acquisition card is connected with the controlled computer;
transmitting a real-time operation instruction of a control program compiled in controlled computer simulation software to a motor driving cabinet through an HIL data acquisition card, and feeding operation data of a motor or voltage and current value data acquired in the motor driving cabinet after inversion back to the program compiled by the controlled computer simulation software in real time so as to form hardware-in-loop simulation;
an inversion voltage output port of the motor driving cabinet is connected to a motor driving voltage port of the three-phase alternating current motor, a motor encoder signal output port of the three-phase alternating current motor is connected to an encoder signal input output port of the motor driving cabinet, and the motor driving cabinet converts an encoding signal of the motor into a digital signal which is convenient to read by a computer;
the digital input port of the motor driving cabinet is connected with the digital I/O port of the HIL data acquisition card and is used for realizing that the digital I/O port of the HIL data acquisition card is controlled by a program in simulation software to output PWM waves for power electronic correlation transformation;
an analog signal input port of the HIL data acquisition card is connected with a voltage and current measuring port of the motor driving cabinet and is used for feeding back voltage and current values converted by power electronics of each basic module of the driving cabinet unit to form a closed loop so as to obtain expected electric energy parameters;
the code signal input port of the HIL data acquisition card is connected with the code signal output port of the motor driving cabinet, the running data of the motor is acquired to the controlled computer through the code input port of the HIL data acquisition card, so that the running data of the motor is read by a program in the simulation software, the motor is controlled to rotate according to an expected rule better, and a related experiment of motor control is completed.
2. The networked real-time control power electronic and motor control experiment device according to claim 1, wherein: the controlled computer and the master control computer adopt computers provided with MATLAB/Simulink software.
3. The networked real-time control power electronic and motor control experiment device according to claim 1, wherein: the HIL data acquisition card is connected with a controlled computer through a data line and is compatible with MATLAB/Simulink software.
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