English

Not applicable.

The home faculty only

Student must have the previous knowledge from the applied mathematics: To use and to apply the mathematical operations above complex numbers in the component and polar representation (summation, subtraction, multiplication, division, and rectification of the complex fraction). To apply the basic principles of the integral and differential calculus of one variable: description of the inductor work, i.e. induction law in the differential and integral form, similarly the dif. and integr. relation between instant values of the current and voltage at the capacitor. Calculus of the mean and RMS values of the periodical function. Student must have the previous general knowledge and ability: To describe basic properties of the discrete electronic devices (diode, bipolar and unipolar transistor). To attend the course BREB (Control Electronics). To be able practically to use and to apply the following tools for the analysis and synthesis of the electric circuits: 1st and 2nd Kirchhoff laws, Ohm law, induction law in the differential and integral form.

20 points for first semestral test.
1+1+1+1 points = 4 points for 4 laboratory tasks.
6 points for second semestral test.
70 points for exam.
100 points total.
The attendance at the all numerical and laboratory exercises is required.

To give the students the basic knowledge in the area of power elektronics. Basic theoretical and practical knowledges for the design of the power converters.
It is proved by written test, that student is able:
- To define power converter. To define ideal switching element. To list four basic types of converters: AC/DC, AC/AC, DC/DC, DC/AC. To describe the cascade of more converters with the voltage/current DC-bus.
- To describe static thermal phenomena. To explain the cooling of semiconductors. To calculate the demanded thermal resistance of the heat-sink.
- To define the active power. To calculate the conducting losses of a switching device.
- To define EMC in LF area. To define the power factor. To define the total distortion factor of a phase current.
- To list power switching devices: uncontrollable (D), semi-controllable (Ty, Tri), controllable (BJT, MOS-FET, IGBT, GTO). To name its usable parameters.
- To list all types of the rectifiers (AC/DC): uncontrolled, controlled, semi-controlled, node/bridge, m-phase, q-pulse, with/without flywheel diode. To list typical loads: DC-motor, LC-filter, accumulator, welding arc. To justify, why the mean value of the output voltage is useable. To describe hte rectifier from the cybernetics point of view: control char., transport delay, dynamics.
- To represent the current rippling in the rectifier load. To analyse the shapes of the input phase currents.
- To describe and analyse the net DC sources for transistor converters: 2-pulse uncontrolled rectifier with pick-up capacitor, 6-pulse uncontrolled rectifier with pick-up capacitor or LC-filter.
- To list and to describe AC/AC type converters: 1-phase, 3-phase. To analyse its work into the R-load. To deduce the control characteristics for R-load, and justify why the RMS value of the output voltage is useful.
- To list the transistor pulse DC converters (DC/DC). To divide it with regard to the ability to work in the different quadrants of the VA-characteristics of the load. To analyse the converter working in I.Q.
- To analyse the DC/AC converters, 1-phase, 3-phase.
- To describe the PWM system for the control of DC/DC and DC/AC converters.

In the laboratory practices the student measures and analyses signals in different power converters with help of oscilloscope. Student trains following skills:
- To handle and to use basic measure instruments in the power electronics laboratory: oscilloscope, voltmeter, ampermeter, DC and AC laboratory supplies.
- To measure operational properties of different uncontrolled diode rectifiers. To describe measured oscillographs of currents and voltages. To measure the rippling of the output voltage and current.
- To measure pulse converter working in the 1.Q. To describe measured oscillographs of currents and voltages. To analyse the voltage and current rippling on the load.
- To measure 1-phase converter of the AC voltage (AC/AC). To describe the measured oscillographs of currents and voltages.
- To analyse the diagrams of voltages in the 1-phase DC/AC converter working in the sinusoidal PWM regime.

In the numerical lectures the student learns following skills:
- To calculate the mean and RMS value of typical signals.
- To design the current and voltage capability of the power switching devices.
- To calculate the power conducting loss of the power switching device.
- To calculate demanded thermal resistance of the heat-sink in the steady-state.
- To calculate the active power in the different nodes of DC/DC power converters.
- To design controlled rectifier. To calculate in it the voltage, current, and power rates.
- Navrhnout a dimenzovat střídavý měnič napětí. Spočítat v něm napěťové, proudové a výkonové poměry.
- To design AC/AC converter. To calculate in it the voltage, current, and power rates.

Not applicable.

Not applicable.

Bacha, S., Munteanu, I., Bratcu, A.I.: Power Electronic Converters Modeling and Control (EN)
Erickson, R.W., Maksimovic, D.: Fundamentals of Power Electronics (EN)

Bose, B.K.: Power electronics and AC Drives. Prentice Hall 1986 (EN)