Design of a test-bench for 3-phase BLDC motors

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Supervisor:
Scherer Balázs Attila
Department of Measurement and Information Systems

The contemporary environmental regulations greatly influence the direction of the developments in the automotive industry. As a result of this, one of the dominant trend is the reducing the cars fuel consumption and emission. This is forcing the entire industry to continuous development. Because of this, the developers often find themselves on completely new specialty. In these cases they have to build up completely new systems from the fundamentals.

This happened at the Robert Bosch LLC department of automatic transmission development as well. Due to the start-stop systems, the transmission’s mechanical oil pump was exchanged by electrical one. It is also controlled by the transmission control unit. Motor control emerged as a completely new area of development for the department. Because of this there was not any test environment for this kind of development.

My job was to build up a test environment for testing electrical motors and the related control software. Within the framework of my thesis, I will present the structure of such a measurement environment. The role of this environment is to measure the electrical and mechanical parameters of the motors.

Thereinafter I explain how I designed such an environment from the specification, through design, to implementation. I carried out the complete validation of the environment. Finally, I present the steps of the motor characteristic measurement.

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