Development and Integration of Water Cooling Unit feature for Automated Testing of MV Drive Functionality

Abstract

Electrical Drives are more popular for the control of the electrical motors. Any type of the motor ,as per the requirement can attached with the electrical drives for example induction motor, synchronous motor or DC motor. According to the requirement the drive should be capable to give required speed and required torque. Now a day the high performance drive having the feature of Active rectifier unit by which we can regenerate the power, also the power quality will be improved. So according to the requirement, the developer of the drive will develop the code which has all the functionality of the drive. For testing of this functionality, the automation testing is done by testers. By Automation testing the human error will reduce, performance will improve, accuracy will increase, testing time will reduce. The Medium voltage drive includes some units like supply Unit, MCB, Transformer, Rectifier, DC link, Inverter, Motor and Load. These all component are of high ratings. Hence they all will generate huge amount of heat. These will affect the drives performance and its life. To solve this problem of heating, water cooling system are included with the variable frequency drives .These water cooling unit dissipate the heat and cooling down the temperature of the drive. Hence the performance of the component will become good and the overall efficiency of plant will increase. In Drive the 75 percent heat will generate by the Rectifier and inverter unit. The Present Plant Model does not have Water Cooling unit. By integrating the model of water cooling unit with the present plant model we can get a plant that resembles exactly the real plant. Codesys and Automation Builder will be used to model the water cooling unit. After modeling we will do automated testing for water cooling unit to check the Drive functionality and by this we can get more test coverage and accuracy. Automated testing helps to reduce the test efforts and human errors.