Bench test mechanism of auxiliary drive module

Abstract

The utility model discloses a bench test mechanism of an auxiliary drive module, and relates to the technical field of twin trawling test equipment. Comprising a platform body, a test accompanying motor, a tested motor and a rotating speed and torque sensor which are coaxially arranged are arranged at the top of the platform body, the rotating speed and torque sensor is located between the test accompanying motor and the tested motor, and a first test accompanying motor adapter flange and a first tested motor adapter flange are arranged on the two sides of the rotating speed and torque sensor respectively. The rotating speed and torque sensor is connected with an accompanying test motor through a first accompanying test motor adapter flange, the rotating speed and torque sensor is connected with a tested motor through a first tested motor adapter flange, the accompanying test motor is electrically connected with a frequency converter, the tested motor is electrically connected with an auxiliary drive module, and the auxiliary drive module uses open-loop control. According to the bench testing mechanism of the auxiliary driving module, the open-loop control of the auxiliary driving module can prevent the motor from triggering a resolver fault after receiving interference, and the auxiliary driving module can stop output when the motor is over-current, over-load and over-hot so as to protect the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of towed test equipment, in particular to a bench test mechanism for an auxiliary drive module. Background Technique

[0002] A motor is a device that converts electrical energy into mechanical energy. It uses an energized coil (i.e., a stator winding) to generate a rotating magnetic field and acts on the rotor to form a magnetoelectric driving torque. Motors are divided into DC motors and AC motors according to the different power supplies used. Most of the motors in the power system are AC motors, which can be synchronous motors or asynchronous motors. A motor mainly consists of a stator and a rotor. The direction of the force on the energized wire in the magnetic field is related to the direction of the current and the direction of the magnetic induction line (magnetic field direction). The working principle of the motor is the action of the magnetic field on the current, which causes the motor to rotate.

[0003] Currently, during the process of testing a motor, it is usually tested through a tow test. When the existing tow test equipment is testing, there is a lack of controller output current, which easily leads to overload damage protection of the motor. Summary of the Invention

[0004] The utility model provides a bench test mechanism for an auxiliary drive module to solve the problems in the background technique.

[0005] To achieve the above object, the utility model provides the following technical solution: A bench test mechanism for an auxiliary drive module, including a platform main body. On the top of the platform main body, there are coaxially arranged a companion motor, a motor under test, and a rotational speed and torque sensor. The rotational speed and torque sensor is located between the companion motor and the motor under test. On both sides of the rotational speed and torque sensor, there are respectively a companion motor adapter flange one and a motor under test adapter flange one. The rotational speed and torque sensor is connected to the companion motor through the companion motor adapter flange one, and the rotational speed and torque sensor is connected to the motor under test through the motor under test adapter flange one. The companion motor is electrically connected to a frequency converter, and the motor under test is electrically connected to an auxiliary drive module. The auxiliary drive module uses open-loop control.

[0006] Further, at least two T-shaped grooves are opened on the top of the platform main body.

[0007] Further, a companion motor positioning bracket is installed on the top of the platform main body. A companion motor adapter plate is installed on the companion motor positioning bracket, and the companion motor is installed on the companion motor adapter plate. A motor under test positioning bracket is also installed on the top of the platform main body. A motor under test adapter plate is installed on the motor under test positioning bracket, and the motor under test is installed on the motor under test adapter plate.

[0008] Further, the bottoms of the positioning bracket of the motor under test and the positioning bracket of the accompanying motor are both fixed by screwing bolts into the T-shaped grooves.

[0009] Further, a bench is installed on the top of the platform body, and the rotational speed and torque sensor is installed on the top of the bench.

[0010] Further, the bottom of the bench is fixed by screwing bolts into the T-shaped grooves.

[0011] Further, one end of the first adapter flange of the accompanying motor away from the rotational speed and torque sensor is connected to the second adapter flange of the accompanying motor which is drivingly connected to the output shaft of the accompanying motor.

[0012] Further, one end of the first adapter flange of the motor under test away from the rotational speed and torque sensor is connected to the second adapter flange of the motor under test which is drivingly connected to the output shaft of the motor under test.

[0013] Compared with the prior art, the present utility model provides a bench test mechanism for an auxiliary drive module, having the following beneficial effects: for the bench test mechanism of the auxiliary drive module, the open-loop control of the auxiliary drive module can avoid the resolver fault triggered after the motor is interfered, and the auxiliary drive module can also stop output when the motor is overcurrent, overloaded or overheated, thereby protecting the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a top view structural diagram of the present utility model;

[0016] Figure 3 is an exploded structural diagram of the present utility model;

[0017] Figure 4 is a working block diagram of the present utility model.

[0018] In the figure: 1. Platform body; 2. Motor under test; 3. Accompanying motor; 4. Rotational speed and torque sensor; 5. First adapter flange of the accompanying motor; 6. Second adapter flange of the accompanying motor; 7. First adapter flange of the motor under test; 8. Second adapter flange of the motor under test; 9. T-shaped groove; 10. Positioning bracket of the accompanying motor; 11. Adapter plate of the accompanying motor; 12. Positioning bracket of the motor under test; 13. Adapter plate of the motor under test; 14. Bench. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-4 , the present utility model discloses a bench test mechanism for an auxiliary drive module, including a platform main body 1. On the top of the platform main body 1, a coaxial test motor 2, a motor under test 3, and a rotational speed and torque sensor 4 are provided. The rotational speed and torque sensor 4 is located between the test motor 2 and the motor under test 3. On both sides of the rotational speed and torque sensor 4, a test motor adapter flange I 5 and a motor under test adapter flange I 7 are respectively provided. The rotational speed and torque sensor 4 is connected to the test motor 2 through the test motor adapter flange I 5, and the rotational speed and torque sensor 4 is connected to the motor under test 3 through the motor under test adapter flange I 7. The test motor 2 is electrically connected to a frequency converter, and the motor under test 3 is electrically connected to an auxiliary drive module, and the auxiliary drive module uses open-loop control.

[0021] The auxiliary drive module is an auxiliary drive controller for controlling the motor rotation direction and speed, lacking hardware protection against excessive output current leading to motor overload during rapid loading under abnormal working conditions.

[0022] At least two T-shaped grooves 9 are opened on the top of the platform main body 1.

[0023] Specifically, a test motor positioning bracket 10 is installed on the top of the platform main body 1. A test motor adapter plate 11 is installed on the test motor positioning bracket 10, and the test motor 2 is installed on the test motor adapter plate 11. A motor under test positioning bracket 12 is also installed on the top of the platform main body 1. A motor under test adapter plate 13 is installed on the motor under test positioning bracket 12, and the motor under test 3 is installed on the motor under test adapter plate 13.

[0024] The bottoms of the test motor positioning bracket 10 and the motor under test positioning bracket 12 are fixed by screwing bolts into the T-shaped grooves 9.

[0025] In this implementation, the opening of the T-shaped grooves 9 can facilitate the installation of the test motor positioning bracket 10 and the motor under test positioning bracket 12 and flexibly adjust their installation positions.

[0026] Specifically, a bench 14 is installed on the top of the platform main body 1, and the rotational speed and torque sensor 4 is installed on the top of the bench 14.

[0027] The bottom of the bench 14 is fixed by screwing bolts into the T-shaped grooves 9.

[0028] In this embodiment, the test bench 14 lifts the rotational speed torque sensor 4 so that the rotational speed torque sensor 4 is coaxially arranged with the output shafts of the accompanying motor 2 and the motor under test 3.

[0029] Specifically, one end of the accompanying motor adapter flange 1 away from the rotational speed torque sensor 4 is connected with an accompanying motor adapter flange 2 6 which is in transmission connection with the output shaft of the accompanying motor 2.

[0030] In this embodiment, a spline is connected to the accompanying motor adapter flange 2 6 through a positioning pin, and the spline is in transmission connection with the output shaft of the accompanying motor 2.

[0031] Specifically, one end of the motor under test adapter flange 1 away from the rotational speed torque sensor 4 is connected with a motor under test adapter flange 2 8 which is in transmission connection with the output shaft of the motor under test 3.

[0032] In this embodiment, a spline is connected to the motor under test adapter flange 2 8 through a positioning pin, and the spline is in transmission connection with the output shaft of the motor under test 3.

[0033] During use, according to the relevant parameters of the synchronous motor performance, the auxiliary drive module is used to control the motor. After the motor is installed on the platform main body 1, the motor under test 3 is controlled by the auxiliary drive module, and the accompanying motor 2 is controlled by a frequency converter and used as a load motor to increase the load for the motor under test 3 to test the external characteristics of the motor under test 3. The auxiliary drive module uses open-loop control.

[0034] After the three-phase input of the motor under test 3 is connected to the three-phase output of the auxiliary drive module, relevant upper computer software is used. After importing the performance parameters of the motor under test 3, self-learning is started. After the motor passes the self-learning, the synchronous motor stator resistance, direct-axis inductance, quadrature-axis inductance, back electromotive force, D-axis current loop, proportional gain P, Q-axis current loop proportional gain P, and Q-axis current loop integral gain I parameters of the motor can be obtained, and then the counter-rotating with load test is carried out. The motor under test 3 operates in the electric working mode to the rated speed, and the accompanying motor 2 adjusts the positive torque limit value through the frequency converter to increase the torque. The torque, speed and output power of the motor under test are observed through the rotational speed torque sensor 4 on the test bench 14.

[0035] After the torque of the motor under test 2 increases, the three-phase output current of the auxiliary drive module increases. Record the output current, feedback frequency, and Q-axis current setting of the motor at different torques. When the increased torque reaches the peak torque of the motor under test 3, the output current of the auxiliary drive module corresponds to the peak current of the motor. If the output current of the auxiliary drive module exceeds the peak current of the motor when the motor reaches the peak torque, it is necessary to relearn the measured current or adjust the parameters obtained after the motor self-learning. After adjustment, the peak current of the motor can be obtained. After the motor-to-drag bench test is completed after the peak torque of the motor under test 3, the auxiliary drive module can control the motor to stop output to protect the motor from overload protection when the motor outputs the peak torque. When a three-phase sudden short circuit is triggered during the motor operation, the auxiliary drive module triggers an overcurrent protection shutdown to protect the motor.

[0036] The auxiliary drive module can be controlled by software logic to stop the machine in case of short circuit, overload, or overheat to protect the motor. The auxiliary drive module uses IGBT triodes to convert direct current into three-phase alternating current to control the motor to run with a load. During the drag test, it can effectively reflect the external characteristics of the motor.

[0037] In summary, for the bench test mechanism of the auxiliary drive module, the open-loop control of the auxiliary drive module can avoid the resolver fault triggered after the motor is interfered, and the auxiliary drive module can also stop output when the motor is overcurrent, overloaded, or overheated to protect the motor.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bench test mechanism for an auxiliary drive module, characterized in that: The invention comprises a platform body (1), wherein the top of the platform body (1) is provided with a coaxially arranged accompanying motor (2), a motor to be measured (3), and a speed torque sensor (4), wherein the speed torque sensor (4) is located between the accompanying motor (2) and the motor to be measured (3), and the two sides of the speed torque sensor (4) are respectively provided with an accompanying motor transfer flange (5) and a motor to be measured transfer flange (7), wherein the speed torque sensor (4) is connected to the accompanying motor (2) via the accompanying motor transfer flange (5), and the speed torque sensor (4) is connected to the motor to be measured (3) via the motor transfer flange (7), wherein the accompanying motor (2) is electrically connected to a frequency converter, and the motor to be measured (3) is electrically connected to an auxiliary drive module, and the auxiliary drive module uses open-loop control.

2. The bench test mechanism of an auxiliary drive module according to claim 1, characterized in that: At least two T-shaped grooves (9) are provided on the top of the platform body (1).

3. The bench test mechanism of an auxiliary drive module according to claim 2, characterized in that: A test motor positioning bracket (10) is installed on the top of the platform body (1), a test motor adapter plate (11) is installed on the test motor positioning bracket (10), the test motor (2) is installed on the test motor adapter plate (11), a measured motor positioning bracket (12) is also installed on the top of the platform body (1), a measured motor adapter plate (13) is installed on the measured motor positioning bracket (12), and the measured motor (3) is installed on the measured motor adapter plate (13).

4. The bench test mechanism of an auxiliary drive module according to claim 3, characterized in that: The bottoms of the accompanying motor positioning bracket (10) and the measured motor positioning bracket (12) are both fixed by screwing bolts into the T-shaped slot (9).

5. The bench test mechanism of an auxiliary drive module according to claim 2, characterized in that: A stand (14) is installed on the top of the platform body (1), and the speed torque sensor (4) is installed on the top of the stand (14).

6. The bench test mechanism of an auxiliary drive module according to claim 5, characterized in that: The bottom of the stand (14) is fixed by screwing bolts into the T-shaped slot (9).

7. The bench test mechanism for an auxiliary drive module according to claim 1, characterized in that: One end of the accompanying measurement motor adapter flange 1 (5) away from the speed torque sensor (4) is connected to an accompanying measurement motor adapter flange 2 (6) which is drivingly connected to the output shaft of the accompanying measurement motor (2).

8. The bench test mechanism of an auxiliary drive module according to claim 1, characterized in that: One end of the measured motor adapter flange 1 (7) away from the speed torque sensor (4) is connected to a measured motor adapter flange 2 (8) which is drivingly connected to the output shaft of the measured motor (3).

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