Main content of this thesis will be a description of the principle of operation and measurement of temperature balance of asynchronous engines. The work deals with the analysis of possible places of the asynchronous engine, which can cause heating of the engine itself and its parts. Overheating will be detected at various engine loads during operation until a stable temperature field is created inside the machine. First will be measurement performed on unloaded engine and then with the dynamic load that will be generated by the second asynchronous engine. We will regulate the speed as well as the load using a frequency converter. Subsequently, a way will be proposed to eliminate this overheating as effectively as possible.