The motor test bench is an important equipment in the field of motor manufacturing and testing. It can comprehensively and accurately evaluate motors by integrating various testing functions. This article will delve into the working principle of the motor test bench.

1. Structure and composition

Motor architecture

The basic architecture of the fully automatic motor comprehensive test bench includes mechanical structure, electrical system, and automatic control system. Mechanical structures are usually composed of motor brackets, rotors, sensors, measuring instruments, etc. The electrical system includes motor windings, power supply, frequency converter, etc., while the automatic control system is the brain of the entire test bench, responsible for coordinating and monitoring the operation of each part.

Sensors and measuring instruments

The test bench is equipped with various sensors to monitor the operating status of the motor. These sensors include but are not limited to temperature sensors, vibration sensors, speed sensors, etc. Measuring instruments are used to measure key parameters such as current, voltage, and power of motors.

2. Working principle

Start and Run

When the test bench is started, the automatic control system first initializes the motor to ensure that all sensors and measuring instruments are working properly. Next, the motor obtains corresponding electrical energy through the power supply and frequency converter, and starts rotating according to the instructions of the control system. This stage is mainly used to test the starting performance and no-load operation of the motor.

load testing

During the load testing phase, the test bench loads the motor through the control system to simulate the load conditions in actual operation. At the same time, various sensors monitor the temperature, vibration, and other parameters of the motor to ensure stable operation under load conditions. This helps evaluate the efficiency and temperature rise of the motor.

Efficiency Measurement

The fully automatic motor comprehensive test bench also has efficiency measurement function. By measuring the input and output power of the motor, the system can accurately calculate the efficiency of the motor and provide users with intuitive performance indicators.

harmonic analysis

Harmonic analysis is an important function of the fully automatic motor comprehensive test bench. By monitoring the waveforms of current and voltage during the operation of the motor, the test bench can analyze the harmonic components generated by the motor. This helps identify potential issues and ensure the quality of electrical energy output by the motor.

protection mechanism

The test bench is also equipped with multiple protection mechanisms to ensure that the motor is not damaged during the testing process. These protection mechanisms include overcurrent protection, over temperature protection, under voltage protection, etc., which can automatically cut off the power supply in case of abnormal situations in the motor, protecting the safe operation of the motor and equipment.

3. Control system

PLC control

The automatic control system of the fully automatic motor comprehensive test bench usually uses a programmable logic controller (PLC). PLC can automatically control the start stop, operation status, and load situation of the motor according to preset programs and user instructions. PLC can also monitor the feedback information of various sensors in real time and make corresponding adjustments.

Human-computer interaction interface

In order to facilitate user operation and monitoring, the test bench is equipped with a human-computer interaction interface. This interface is usually a touch screen or computer, where users can set experimental parameters, start and stop motors, view real-time data and test results.

4. Data recording and analysis

The large amount of data generated during the experimental process will be recorded and stored. These data can be used for subsequent analysis, such as efficiency analysis, temperature rise analysis, harmonic analysis, etc. The data recording and analysis function of the fully automatic motor comprehensive test bench provides users with a comprehensive tool to understand the performance of the motor.