448-0301/01 – Power Electronics II (VE2)
| Gurantor department | Department of Electronics | Credits | 8 |
| Subject guarantor | prof. Ing. Petr Chlebiš, CSc. | Subject version guarantor | prof. Ing. Petr Chlebiš, CSc. |
| Study level | undergraduate or graduate | Requirement | Choice-compulsory |
| Year | 2 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 2003/2004 | Year of cancellation | 2009/2010 |
| Intended for the faculties | FEI | Intended for study types | Master |
Subject aims expressed by acquired skills and competences
Extended knowledges of power electronics for students, which are specialized in control drives, design of semiconductor converters and other fields of industrial electronic.
Teaching methods
Summary
Subject Power Electronics II develops problems of Power Electronics I. It orients on better knowledge modern semiconductor components and their application principle. Subject Power Electronics II develops knowledges of semiconductor converters theory.
Compulsory literature:
Recommended literature:
Technical texts at http://fei.vsb.cz/kat448/kat_448.htm
Way of continuous check of knowledge in the course of semester
E-learning
Other requirements
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
Bipolar power transistor - modeling of characters, Darlington connection, parallel connection, power switching of inductive load, excitation pulses - kinds of creating.
Unipolar transistors, IGBT, MCT - modeling of characters, surrogate diagram, method s of formation excitation pulses, parallel connection.
Mode of semiconductor switching - hard switching, soft switching, cooperation witch neutral diode, switch on in zero current or voltage.
Safety circuits of semiconductor switches - RC, RCD, characteristics, spread of losses.
Analysis of output voltage and current of controlled rectifiers.
Mains and load - influences on rectifiers.
Back influences of rectifiers to mains, power scheme.
Control characteristics of rectifiers.
Pulse converters, modes of control influences to load. Analyze of output voltage and current.
Principles of resonance converters.
Power circuits of voltage inverter, resonance converters.
Power circuit of current inverter, four quadrant connecting of frequency converters.
Modern structure power schemes and control algorithms of frequency converters.
Requirements on passive elements of power circuits.
Exercises:
Training of subject Power Electronics I - characteristics power components.
Modeling in program Pspice. Introduction basic models power component.
Dimensioning of coolers for without potential modules.
Dimensioning of coolers with air refrigeration for switch off components at low and high frequency areas.
TEST Nr.1 - Characteristics of power semiconductor components and their losses.
Back influences of rectifiers.
TEST Nr.2 - in range of lectures 7. - 12.
Special dimensioning of capacitors and inductions for power electronic.
Laboratories:
Laboratory exercises Nr.1 - Switch with bipolar transistor.
Laboratory exercises Nr.2 - Switch with unipolar transistor.
Laboratory exercises Nr.3 - Commutation of rectifiers.
Laboratory exercises Nr.4 - Resonance inverters.
Laboratory exercises Nr.5 -Commutating circuits for voltage inverters.
Computer labs:
Assessment of losses and dimension in program PSpice - modeling.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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