Experimental investigation of a series wound DC motor for modeling purpose in electric vehicles and mechatronics systems

Abstract

In our previous publication a model for serial wound DC motors was presented and a simulation program was described that is based on this model and had been developed in MATLAB environment. The recent publication presents the latest, extended version of the program and deals with the measurement of the electromagnetic and dynamic characteristics (electric resistances, dynamic inductances, bearing resistance and brush friction torque) of the above motor. From the measured characteristics, the program simulates the operation of the motor, calculating its torque, rpm and current intensity, as a function of time. To check the accuracy of the measured characteristics, and also the proper operation of our program, locked rotor response test measurements were carried out on the motor and their results were compared with the simulated ones. Finally, a recently developed heat energy recovery system is presented, which can be used on electrical drives. Highlights A simulation model is presented for series DC motors in MATLAB environment.  The model applies characteristics depend on current intensity and rpm as input.  The set-up and procedure for measuring the above characteristics is described.  The reliability of the characteristics and model were proved by test measurements.  A heat energy recovery system applying TEG modules was developed and tested.

Dynamic modelling and simulation of a prototype race car in MATLAB/Simulink applying different types of electric motors

“…where the electromagnetic torque of the motor can be calculated as: [3], while the value of J r sometimes can be found in the catalogue of the motor. M res (u r ) is also frequently approximated as:…”

“…The detailed description of the simulation program based on this model can be found in reference [3], together with the detailed description of the measurement set-up and procedures for the determination of the technical characteristics of the motor, that are necessary as input data for the simulation. In reference [3] all the necessary input data are given for a 4 kW SWDC motor. We use these data when simulating the SWDC motor in the prototype race car in Section 4.…”

Dinamikus tesztek soros gerjesztésű DC motoron. A motorral hajtott jármű fékezésének szimulációja

“…Ebből adódóan a járműdinamikai modellünkben és programunkban ezt a motortípust modelleztük és szimuláltuk. [12,13] A motor szimulációhoz a következő paraméterek pontos ismerete szükséges:…”

“…• A tekercsek (álló és forgórész) ohmos ellenállása • Egyéb ohmos ellenállások (vezetékek ellenállása, akkumulátor belső ellenállása) • Kefefeszültség • Dinamikus öninduktivitások (álló és forgórész esetében) • Kölcsönös dinamikus induktivitás • Csapágy és kefeellenállási nyomaték a szögsebesség függvényében • A forgórész tehetetlenségi nyomatéka Ezeket az utolsó kivételével korábban sikerült meghatároznunk a tanszék egyik versenyautójának motorjára [12,13]. A forgórész tehetetlenségi nyomatékát egy kifutási kísérletből határoztuk meg, az eljárást az alábbiakban ismertetem.…”

Measuring the dynamic characteristics of electric motors

“…The modelling of the series wound DC motor [1] and creating a simulation program on the basis of the model are particularly significant parts of the vehicle dynamics simulation. Using the program, and the basic electromagnetic and dynamic characteristics of the motor, we can calculate its RPM, torque and the intensity of current flowing through it as a function of time.…”