CN110824358A

CN110824358A - Low-power multi-type motor series experiment platform

Info

Publication number: CN110824358A
Application number: CN201911028595.0A
Authority: CN
Inventors: 高心远; 高瑾
Original assignee: Beijing Transpacific Technology Development Ltd
Current assignee: Beijing Transpacific Technology Development Ltd; University of Shanghai for Science and Technology
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-02-21

Abstract

The invention relates to a low-power multi-type motor series experimental platform. It includes: the motor comprises a low-voltage motor controller, a universal motor controller, a direct current motor, a permanent magnet synchronous motor, an asynchronous motor and a rectifying device. The experimental part is all installed on the insulation board, and is safe and convenient. The experiment platform can conveniently and diversely realize the experiment in the aspect of motor control, and help students to better understand the control theory, the experiment phenomenon and the result of the relevant motor.

Description

Low-power multi-type motor series experiment platform

Technical Field

The invention belongs to an experimental instrument, and relates to a low-power multi-type motor series experimental platform, which is applied to the electric and automatic motor control and power electronic experiments of universities and colleges and belongs to the field of teaching research equipment.

Background

At present, in each high school of education, some students or researchers who learn electric power and electronic transmission and drag courses by motors often need to apply practical motors which accord with research contents to research and study in the learning process. However, in practical situations, most of the motor platforms are large in size and difficult to operate, and have certain dangerousness, and only one type of motor is available in many platforms, so that experimental phenomena in the cooperative cooperation of multiple motors cannot be observed, and in addition, many motors can only work under a single voltage condition, and the richness of learning and research is also lacking.

Disclosure of Invention

The invention aims to provide a low-power multi-class motor series experimental platform aiming at the defects of the prior art, the platform has smaller volume compared with most of the motor control platforms on the market, the total weight does not exceed 12 kilograms, the operation is easy, the platform has rich structure, various motors are contained in the platform, the platform can be selected automatically according to the research requirement, and the high-level voltage and the low-level voltage can be adjusted automatically according to the research requirement. Moreover, the components in the platform are connected with each other, can be connected with external equipment, are very convenient to regulate and control, are easy to operate, and realize research diversity to a higher degree.

In order to achieve the purpose, the invention adopts the technical scheme that:

this low-power multiclass motor series connection experiment platform essential element has: the motor comprises a low-voltage motor controller (1), a universal motor controller (2), an asynchronous motor (3), a permanent magnet synchronous motor (4), a direct current motor (5) and a rectifying device (6).

All the parts mentioned above are fixed on the insulating plate without disorder, and the parts are connected by wires or pins. The simulator is connected with the motor controller and can be connected with a computer, so that the program can be conveniently downloaded and debugged. The rectifying device is connected with an alternating current power supply, and various power supplies required by the experiment platform can be obtained.

Compared with the prior art, the invention has the following obvious and prominent substantive characteristics and remarkable technical progress: the teaching of this branch of academic or vocational study student and researcher is very practical, and is small, and the study of being convenient for is studied and studied to factor of safety is high, can ensure the security of experiment in the research process. In addition, multiple experimental operation can be realized to a plurality of motors, not only can study and experiment single motor, also can carry out the two motors to dragging the experiment to, different motors correspond different voltages, can realize multiple control method, observe multiple experimental phenomenon, have richened practical application's variety from this.

Drawings

Fig. 1 is a schematic structural view of the present invention. In the figure, 1 is a low-voltage motor controller, 2 is a universal motor controller, 3 is an asynchronous motor, 4 is a permanent magnet synchronous motor, 5 is a direct current motor, and 6 is a rectifying device.

Fig. 2 is a circuit schematic of one embodiment of the present invention.

Detailed Description

The technical solution of the present invention is further specifically described below with reference to the accompanying drawings and preferred embodiments.

The first embodiment is as follows:

referring to fig. 1 and 2, the low-power multi-class motor series experimental platform comprises a low-voltage motor controller (1), a universal motor controller (2), an asynchronous motor (3), a permanent magnet synchronous motor (4), a direct current motor (5) and a rectifying device (6). The method is characterized in that: the individual components (1, 2, 3, 4, 5, 6) of the test platform are fixed to an insulating plate.

The components are connected by the wires as follows:

the low-voltage motor controller (1) is connected with the permanent magnet synchronous motor (4) and the direct current motor (5) through a breaker switch; the universal motor controller (2) and the asynchronous motor (3) are switched on and off through a circuit breaker; the low-voltage motor controller (1) and the universal motor controller (2) are both powered by a rectifying device (6);

the rotating shafts of the asynchronous motor (3), the permanent magnet synchronous motor (4) and the direct current motor (5) are connected through a coupler;

the working principle is as follows: the asynchronous machine (3), the permanent magnet synchronous machine (4) and the direct current machine (5) can all operate in a motor mode or a generator mode. When the motor runs in a generator mode, the motor generates torque opposite to the rotation direction of the rotating shaft, and the effect of applying load is achieved.

Example two:

this embodiment is substantially the same as the first embodiment, and is characterized in that:

the experiment platform is small in size, the total weight of the experiment platform is not more than 12 kilograms, and the experiment platform is portable. The power supply voltage of the motor controller (1) does not exceed 36V, and the motor controller has a safety characteristic. The power supply voltage of the motor controller (2) does not exceed 400V, and the motor controller has high voltage characteristics. The multiple types of motors (3, 4 and 5) are low-power motors, and the power of each motor is not more than 90W. The permanent magnet synchronous motor (4) is provided with a photoelectric encoder and a Hall position sensor, and can output a photoelectric signal and a Hall signal. The direct current motor (5) is provided with a photoelectric encoder and can output a photoelectric signal.

Example three:

this embodiment is substantially the same as the first embodiment, and is detailed as follows with reference to fig. 1:

in fig. 1, the low-voltage motor controller (1) and the universal motor controller (2) are both composed of a motor drive board and a control board, and the motor drive board is connected with the control board through a pin. The low-voltage motor controller (1) is connected with the permanent magnet synchronous motor (4) and the direct current motor (5); the universal motor controller (2) is connected with the asynchronous motor (3). The low-voltage motor controller (1), the universal motor controller (2), the asynchronous motor (3), the permanent magnet synchronous motor (4) and the direct current motor (5) are all powered by the rectifying device (6). One end of the rotating shaft of the asynchronous motor (3) is connected with the rotating shaft of the direct current motor (5), and the other end of the rotating shaft of the asynchronous motor is connected with the permanent magnet synchronous motor (4). The asynchronous motor (3), the permanent magnet synchronous motor (4) and the direct current motor (5) can be mutually loaded. When the asynchronous machine (3) is operated in generator mode, the torque generated by the machine is opposite to the rotation direction of the rotating shaft, and loads are applied to the permanent magnet synchronous machine (4) and the direct current machine (5) which are operated in motor mode. When the permanent magnet synchronous machine (4) or the direct current machine (5) operates in a generator mode, the torque generated by the machine is opposite to the rotation direction of the rotating shaft, and a load is applied to the asynchronous machine (3) which operates in a motor mode.

The implementation process of the experimental platform is described as follows:

firstly, the platform is connected with an alternating current power supply, and the direct current working voltage of the motor controllers (1 and 2) is obtained through a rectifying device, wherein the direct current working voltage supplies power to motor driving plates and control plates of the motor controllers (1 and 2). The motor controllers (1 and 2) are connected with a computer through the simulator, and download programs to the controllers through the computer, and debug the programs, so that the asynchronous motor (3), the permanent magnet synchronous motor (4) and the direct current motor (5) are controlled simultaneously. An ammeter is respectively arranged on the phase A of the asynchronous motor, the phase A of the direct current motor and the phase A of the permanent magnet synchronous motor, and the current of the ammeter is displayed in real time so as to observe the phenomenon in the experiment. In the experimental process, the asynchronous motor (3) is used as a generator, the permanent magnet synchronous motor (4) or the direct current motor (5) is used as a motor, and the asynchronous motor (3) can provide loads for the permanent magnet synchronous motor (4) or the direct current motor (5). The circuit breaker in the experimental platform can break the input voltage of the asynchronous motor (3), the permanent magnet synchronous motor (4), the direct current motor (5) and the rectifying device (6) to play a role in protection.

Finally, it should be noted that the platform can conveniently realize the operation of the motor experiment, and the platform is rich in content, thereby realizing the diversity of the experiment.

Claims

1. The utility model provides a low-power multiclass motor series connection experiment platform, includes low-voltage motor controller (1), general motor controller (2), asynchronous machine (3), PMSM (4), direct current motor (5) and fairing (6), its characterized in that: each part (1, 2, 3, 4, 5, 6) of the experiment platform is fixed on an insulating plate, and the parts are connected with each other through a lead or a contact pin as follows:

the low-voltage motor controller (1) and the universal motor controller (2) are both composed of a motor drive board and a control board, and the motor drive board is connected with the control board through a contact pin;

the low-voltage motor controller (1) is connected with the permanent magnet synchronous motor (4) and the direct current motor (5); the universal motor controller (2) is connected with the asynchronous motor (3);

the low-voltage motor controller (1), the universal motor controller (2), the asynchronous motor (3), the permanent magnet synchronous motor (4) and the direct current motor (5) are all powered by a rectifying device (6); one end of the rotating shaft of the asynchronous motor (3) is connected with the rotating shaft of the permanent magnet synchronous motor (4), and the other end of the rotating shaft of the asynchronous motor is connected with the direct current motor (4).

2. The low-power multi-class motor series experimental platform of claim 1, characterized in that: the motors (3, 4 and 5) are all low-power motors, and the experiment platform is small in size and light in weight.

3. The low-power multi-class motor series experimental platform of claim 1, characterized in that: the power supply voltage of the low-voltage motor controller (1) is not more than 36V, and the power supply voltage range of the universal motor controller (2) is 0-400V;

the motor controllers (1 and 2) can be externally connected with a permanent magnet synchronous motor PMSM, a brushless direct current motor BLDC, an asynchronous motor and a resistance-inductance load.