Energy Conversion Systems

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

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

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

 

 

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

Students should be able to approach the operation of a non-isolated static converter by studying the various operating phases. They should be able to establish the various diagrams, relationships and associated time graphs, and determine the correctors associated with a voltage or current control loop of a power converter, using documentation and calculation methods.

The student should be familiar with the architectures and specific features of the converters needed to control electric actuators.

The student should be familiar with actuators used in robotic applications or low-power motorization.

The student must be able to model the DC machine using transfer functions based on its electrical and mechanical equations and its electrical model, and to implement cascade-type control: speed control and internal current control.

The student will assimilate the principle of autopilot for the control of DC Brushless motors used in low-power applications (model making, UAVs, electric propulsion).

Practical exercises will enable you to implement and illustrate the principle of voltage regulation of a DC/DC power supply, the regulation of a magnetic MCC and the autopilot of a DC Brushless motor.

Students should be able to use the associated circuit or block diagram simulation software.

 

EEA or science and technology bachelor's degree in applied physics or electrical engineering, with courses on the basic principles of power electronics.

Knowledge of the basic principles of electrical machine operation.

Basic automatic concepts for analog control of a linear system.

 

Continuous assessment.

1. Introduction and reminder of power electronics.
2. DC/DC conversion
3. Voltage regulation of a series chopper. Principle and transfer function
4. Calculate 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. Control principles

 

1. Actuators for robotics. Different types of actuators and components. Control architectures. Drive trains: definitions
2. Closed-loop study of a magnet-based MCC. Modeling the conversion chain. Determination of corrector values for a voltage and current control loop.
3. Study the control of a Brushless DC motor. Brushless DC motor control principle: autopilot. Brushless motor control architecture

CM : 24h           

Practical work: 18h