control of electrical machine

5-year combined undergraduate / graduate Engineering programs

General Data
Academic program	General Engineering Program			:
Type d'EC	Classes
Lectures : 8h00 Tutorials : 4h00 Lab Work : 4h00 Total duration : 31h00	Status :	Period : ACADEMIC SEMESTER	Education language : French

Learning Outcomes
Know how to recognize and identify the basic components of power electronics (Diode, Thyristor, MOSFET, IGBT). Know their mode of operation and control to know in which applications use them. Know the electrical circuits and the basic functions of power converters: Choppers (Buck, Boost, Buck-Boost), Single-phase and three-phase rectifiers and inverters. Know how to explain the pulse width modulation method (PWM) Understand the implementation of the control of direct current machines (type of network, operating quadrants, regulation loops) Understand the implementation of a scalar control on synchronous andinduction machines via a frequency converter. Appreciate the limits of the scalar control thanks to an openness to the field-oriented control. Be able to produce a functional diagram of the various electrical blocks of a complete electrical installation from the grid to the machine, including the control.

Learning Outcomes

Know how to recognize and identify the basic components of power electronics (Diode, Thyristor, MOSFET, IGBT). Know their mode of operation and control to know in which applications use them.
Know the electrical circuits and the basic functions of power converters: Choppers (Buck, Boost, Buck-Boost), Single-phase and three-phase rectifiers and inverters.
Know how to explain the pulse width modulation method (PWM)
Understand the implementation of the control of direct current machines (type of network, operating quadrants, regulation loops)
Understand the implementation of a scalar control on synchronous andinduction machines via a frequency converter.
Appreciate the limits of the scalar control thanks to an openness to the field-oriented control.
Be able to produce a functional diagram of the various electrical blocks of a complete electrical installation from the grid to the machine, including the control.

Content
Presentation of the physical phenomena involved in semiconductors (PN junction and MOS effect). Description of the basic components of power electronics (Diode, Thyristor, MOSFET, IGBT). Study of the basic circuits of power electronics: Choppers (Buck, Boost, Buck-Boost), Single-phase and three-phase rectifiers and inverters. Presentation of the pulse width method via a visual analogy. Reminder of the DC machine models and their characteristics (Torque-current and Speed-voltage). Presentation of power converters according to the type of network (choppers from DC and rectifiers from AC) and the operating quadrant (bidirectional voltage and / or current converter). Reminders on the induction machine. Presentation of the two types of control allowed by a frequency converter (scalar and field oriented). Demonstration of maintaining the performance of the machine at variable speed in both modes with explanations of the limits at high and very low frequencies. Tutorials : Complete study of a synchronous machine autopiloted by a thyristor inverter Complete study of an asynchronous machine controlled by scalar control Sizing of an autonomous electricity installation containing a generator (synchronous generator) and photovoltaic panels.

Content

Presentation of the physical phenomena involved in semiconductors (PN junction and MOS effect). Description of the basic components of power electronics (Diode, Thyristor, MOSFET, IGBT).
Study of the basic circuits of power electronics: Choppers (Buck, Boost, Buck-Boost), Single-phase and three-phase rectifiers and inverters.
Presentation of the pulse width method via a visual analogy.
Reminder of the DC machine models and their characteristics (Torque-current and Speed-voltage). Presentation of power converters according to the type of network (choppers from DC and rectifiers from AC) and the operating quadrant (bidirectional voltage and / or current converter).
Reminders on the induction machine. Presentation of the two types of control allowed by a frequency converter (scalar and field oriented). Demonstration of maintaining the performance of the machine at variable speed in both modes with explanations of the limits at high and very low frequencies.
Tutorials :
Complete study of a synchronous machine autopiloted by a thyristor inverter
Complete study of an asynchronous machine controlled by scalar control
Sizing of an autonomous electricity installation containing a generator (synchronous generator) and photovoltaic panels.

Pre-requisites / co-requisites
Rotating electrical machines models (DC motor, sunchronous and induction machines) (S6) Electronics basics (S5) Control loop theory (S5)

Bibliography
Robert Perret, Interrupteurs d'électronique de puissance TI, Convertisseurs électriques et applications, B. Allard, F. Costa, F. Mazaleyrat, A.Miraoui, J-C Vannier Guy Grellet, Guy Clerc, Actionneurs électriques, principes, modèles de commandes

Assessment(s)
N°	Nature	Coefficient	Observable objectives
1	Check knowledge of rotating electrical machines and their associated converters. Check the skills of setting up a scalar control on an asynchronous machine. Check the students' ability to produce a block diagram of a complete installation from the network to the machine including the power electronics.	2	Written exam
2	Ability to identify and analyze the main characteristics of rotating machines and of corresponding speed controllers. Work on test benches with speed controllers for asynchronous motors. Work on a synchronous generator and the methodology to connect the distribution grid.	1	Practical work