Energy Conversion Systems

This teaching unit is made up of several parts, the first of which deals with the power electronics structures required to supply an electronic system. The second part will deal with the current or voltage regulation of these structures. A third part will deal with the conversion functions necessary for the control of MCC and DC Brushless actuators.

The last part presents the topologies of actuators for robotics and their implementation. The control of a DC motor and the self-control of a synchronous motor will illustrate this last part.

Practical work will allow to observe the principle and the implementation of regulated systems for electronics and actuators. This UE could be the support of the M1 project subjects.

The objective of this course is to provide students with the basic knowledge necessary to understand the operation of a closed-loop energy conversion system, whether it is a voltage or current regulation in an electronic power supply or the control of an electric actuator.

The student must be able to approach the operation of a static non-isolated converter by studying the different phases of operation. He will have to know how to establish the various diagrams, relations and associated temporal graphs and to know how to determine the correctors associated with a voltage or current control loop of a power converter from documentations and calculation methods.

The student will have to know the architectures and specificities of the converters necessary for the control of electric actuators.

The student will have to know the actuators used in robotic applications or low power motorizations.

The student must know how to model the DC machine by transfer functions from its electrical and mechanical equations and its electrical model and how to implement a cascade type control: speed control and internal current control.

The student will have to assimilate the principle of autopilot for the control of DC Brushless motors used in small power applications (model making, drone, electric propulsion).

The practical work will allow to implement and illustrate the principle of voltage regulation of a DC/DC power supply, the regulation of a magnet MCC and the autopilot of a DC Brushless motor.

The student must be able to use the associated circuit or block diagram simulation software.

EEA or science and technology degree in applied physics or electrical engineering with instruction in the basic principles of power electronics.

Have knowledge of the basic principles of the operation of electrical machines.

Basic notions of automation for the analog control of a linear system.

Continuous assessment teaching unit.

1. Introduction and reminder on power electronics.
2. DC/DC conversion
3. Voltage regulation of a series chopper. Principle and transfer function
4. Calculation of the correctors of a voltage and current control loop. Applications
5. Converter for DC Brush and DC Brushless motor control. Full bridge structure. DC/AC conversion: Inverter. Principle of controls

1. Actuators for robotics. Different types of actuators and components. Control architectures. Kinematic chains: definitions
2. Closed loop study of a magnet MCC. Modeling of the conversion chain. Determination of the values of the correctors of a voltage and current control loop
3. Study of the control of a DC Brushless motor. Control principle of a DC Brushless motor: self-piloting. Control architecture of a Brushless motor

CM : 24h           

TP : 18h