wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Sisteme de Putere

Total questions: 115

Worksheet time: 6hrs 38mins

Name
Class
Date
1.

Oferiți (desenați) un exemplu al arhitecturii unui sistem de energie.

4 lines
2.

Ce se înțelege prin rectificator?

4 lines
3.

Ce înseamnă un convertor DC/DC cu izolație?

4 lines
4.

Ce este un convertor de punct de încărcare?

4 lines
5.

Oferiți un exemplu de sistem de arhitectură a distribuției centralizate de energie.

4 lines
6.

Care este soluția tradițională de arhitectură a puterii în sistemele distribuite?

4 lines
7.

Care este soluția modernă (nouă) de arhitectură a sistemelor distribuite de putere?

4 lines
8.

Ce se înțelege prin recuperarea naturală inversă a unui diode?

4 lines
9.

Ce se înțelege prin recuperarea inversă forțată a unui diode?

4 lines
10.

Definiți două parametrii ai unui diode convențional care intervin în recuperarea inversă forțată (blocarea prin aplicarea unei tensiuni inverse)?

4 lines
11.

Descrie - cu ajutorul formelor de undă - funcționarea unui tiristor ca redresor.

4 lines
12.

Explicați pierderile de putere care apar atunci când comutați un tranzistor de putere? Puteți schița un desen.

4 lines
13.

Explicați căderile de tensiune printr-un tranzistor MOSFET în starea de conducție. De ce parametrii depinde?

4 lines
14.

Ce este un dispozitiv IGBT? Cum ai putea caracteriza funcționarea sa cu un circuit echivalent?

4 lines
15.

Explicați formele de undă implicate în comutarea directă (activarea) dispozitivelor de putere, cum ar fi IGBT.

4 lines
16.

Explicați formele de undă implicate în comutarea inversă (blocarea) dispozitivelor de putere, cum ar fi IGBT.

4 lines
17.

Listați cerințele îndeplinite de un circuit de pilotare a porților pentru un dispozitiv IGBT.

4 lines
18.

Ce parametri sunt influențați de selecția rezistenței de poartă într-un circuit de dispozitiv IGBT?

4 lines
19.

Ce înseamnă zona de operare sigură?

4 lines
20.

Ce este un dispozitiv GTO?

4 lines
21.

Ce este un circuit snubber?

4 lines
22.

Desenați circuitul unui convertor buck.

4 lines
23.

Care este expresia pentru tensiunea de ieșire a unui convertor buck în modul de conducție continuu?

a)

Vo=D*Vd

b)

Vo=D/Vd

c)

Vo=Vd/D

d)

Vo=Vd*D

24.

Cum este influențată tensiunea de ieșire a unui convertor buck de funcționarea în modul de conducție întrerupt?

4 lines
25.

Ce avantaje ar prezenta operarea la limita dintre conducția întreruptă și cea neîntreruptă?

4 lines
26.

Desenați circuitul unui convertor boost.

4 lines
27.

Care este expresia pentru tensiunea de ieșire a unui convertor boost?

(a)  

28.

Cum este influențată tensiunea de ieșire a unui convertor boost de funcționarea în modul de conducție întrerupt?

4 lines
29.

Desenați schema unui convertor DC multiphază. Explicați avantajele acestui convertor.

4 lines
30.

Ce se înțelege printr-un convertor sincron?

4 lines
31.

Caracteristicile ideale de transfer în tensiune și curent ale unui transformator.

4 lines
32.

Cum ai putea modela un transformator? Desenează un circuit echivalent care să includă toate componentele din model.

4 lines
33.

Ce se înțelege prin inductanța de magnetizare într-un transformator?

4 lines
34.

Ce înseamnă inductanța de pierdere într-un transformator?

4 lines
35.

Desenați schema unui convertor flyback, cu izolație printr-un transformator.

4 lines
36.

Desenați formele de undă principale care descriu funcționarea unui convertor flyback.

4 lines
37.

Care este tensiunea de ieșire calculată ideal pentru un mod de operare cu flux neîntrerupt?

4 lines
38.

Ce este un circuit de protecție snubber? Oferiți un exemplu într-un convertor flyback.

4 lines
39.

Desenați schema unui convertor direct (în avans), cu izolație printr-un transformator.

4 lines
40.

Desenați formele de undă principale care descriu funcționarea unui convertor direct.

4 lines
41.

Ce se înțelege prin ramura de descărcare într-un convertor direct (înainte)?

4 lines
42.

Ce se înțelege prin ramura de descărcare într-un convertor direct?

4 lines
43.

Desenați diagrama unui convertor de curent continuu care funcționează în modul push-pull.

4 lines
44.

Care este expresia pentru tensiunea de ieșire ca funcție a tensiunii de alimentare într-un convertor push-pull?

4 lines
45.

Desenați formele de undă principale care descriu funcționarea unui convertor push-pull.

4 lines
46.

Explicați principiul convertoarelor rezonante.

4 lines
47.

Desenați diagrama unui convertor de poduri cu control de fază.

4 lines
48.

Desenați diagrama și formele de undă principale pentru a descrie funcționarea unui convertor în punte cu control de fază.

4 lines
49.

Ce înseamnă timpul mort? Când (sau unde) este folosit acest concept?

4 lines
50.

De ce se urmărește comutarea tranzistorilor la tensiune zero?

4 lines
51.

Explain the principle of synchronous rectification in the secondary of isolated DC converters.

4 lines
52.

What is meant by Point-of-Load (PoL) converter?

4 lines
53.

What is meant by series regulator element in an analog mode voltage stabilizer?

4 lines
54.

What advantage does using a common collector configuration for the series regulator element provide?

4 lines
55.

Draw the generic structure of an automatic control system.

4 lines
56.

List three generally accepted requirements for designing the control law of a DC voltage stabilizer.

4 lines
57.

What are the general accepted requirements for the design of the control law of a DC voltage stabilizer?

4 lines
58.

How is the compensation (control) of a power supply in a common-emitter configuration achieved?

4 lines
59.

What is meant by LDO (Low Dropout Voltage) converters? Where are they used?

4 lines
60.

What contradictory conditions do we encounter in LDO converters?

4 lines
61.

If the series regulator element in an analog voltage stabilizer is used in a common-emitter configuration, what condition must we satisfy?

4 lines
62.

Draw a type I control scheme used for controlling a DC converter. What advantage does it present?

4 lines
63.

Draw a type II control scheme used for controlling a DC converter. What advantage does it present?

4 lines
64.

Draw a type III control scheme used for controlling a DC converter. What advantage does it present?

4 lines
65.

Draw a single-phase bridge rectifier with resistive load and calculate the average output voltage.

4 lines
66.

What is meant by the commutation angle in rectifiers?

4 lines
67.

What is the average value of the output voltage?

4 lines
68.

What is meant by the commutation angle in rectifiers?

4 lines
69.

What negative effects do rectifiers have on the power supply network?

4 lines
70.

Draw a three-phase midpoint rectifier.

4 lines
71.

Draw a three-phase bridge rectifier.

4 lines
72.

Define the powers involved in supplying a converter connected to the AC power grid.

4 lines
73.

Define the power factor using the components of power.

4 lines
74.

Define the displacement factor when supplying a load from the AC power grid.

4 lines
75.

Define the distortion factor when supplying a load from the AC power grid.

4 lines
76.

What are the objectives related to improving the power factor? You can use a drawing for explanation.

4 lines
77.

Draw the phasor diagram representing line and phase voltages in a three-phase system.

4 lines
78.

Draw the circuit used to improve the power factor using a single-phase rectifier bridge with diodes and a boost converter.

4 lines
79.

Draw the circuit of a three-phase converter with a single transistor used for power factor correction.

4 lines
80.

Draw the circuit of a single-phase converter operating in all four quadrants used for power factor correction.

4 lines
81.

Draw the diagram and waveforms that characterize the operation of an inverter branch without modulation.

4 lines
82.

Explain the role of dead-time in inverter control.

4 lines
83.

Draw the diagram and waveforms that characterize the operation of a single-phase inverter in bridge configuration without modulation.

4 lines
84.

What is meant by control using pulse width modulation technique? Explain with a drawing for the waveforms.

4 lines
85.

Explain with the help of a drawing how the command signals corresponding to a modulation technique can be produced.

4 lines
86.

What is the maximum AC voltage that can be obtained with an inverter branch?

4 lines
87.

How can the command signals corresponding to a modulation technique be produced?

4 lines
88.

What is the maximum voltage of alternating current that can be obtained with a branch of an inverter? How does this depend on the supply voltage in direct current?

4 lines
89.

Draw the circuit and briefly explain the operation of a single-phase inverter in bridge, controlled with modulation technique. Sketch the waveforms.

4 lines
90.

What is meant by modulation index in the control of inverters?

4 lines
91.

What is meant by a three-phase load in a triangle and what is meant by a star load?

4 lines
92.

Draw the diagram of a three-phase inverter with a star load, without connection of the neutral point.

4 lines
93.

What is specific (in terms of shape) about the phase voltage at the output of a three-phase inverter with a star load, without connection of the neutral point?

4 lines
94.

What is meant by over-modulation in the operation of inverters?

4 lines
95.

What is meant by a multi-level inverter?

4 lines
96.

Under what conditions can a branch of an inverter operate as a rectifier? What defines whether the same circuit works as an inverter or as a rectifier?

4 lines
97.

What is meant by an uninterruptible power supply (UPS)? What is meant by conditioning the supply voltage?

4 lines
98.

Calculate the average value of the voltage at the output of a rectifier with a single diode rectifier.

4 lines
99.

Calculate the average value of the voltage at the output of a rectifier with diodes connected in a single-phase bridge rectifier.

4 lines
100.

Calculate the average value of the voltage at the output of a rectifier with diodes connected in a three-phase bridge rectifier.

4 lines
101.

Explain the method of control with tracking of a sinusoidal reference for current peaks. This method is used to improve the power factor at the supply from the grid.

4 lines
102.

Explain the method of control with hysteresis and variable frequency of pulses. This method is used to improve the power factor at the supply from the grid.

4 lines
103.

Explain the method of current control with a current regulator. This method is used to improve the power factor at the supply from the grid.

4 lines
104.

If we connect a bridge-type inverter topology

4 lines
105.

If we connect an inverter topology in a single-phase bridge through an inductance to the AC power supply, what are the requirements (two) for designing the control scheme?

4 lines
106.

What is the role of using Clarke/Park coordinate transforms in defining the control scheme of a three-phase grid interface?

4 lines
107.

Explain the Clarke transform.

4 lines
108.

Explain the Park transform.

4 lines
109.

Draw the block diagram of the control system for the supply currents for a three-phase converter connected to the grid, with the separation of current components through coordinate transformations.

4 lines
110.

How can you explain the advantage of using a modulation technique in controlling an inverter compared to the case of control without modulation technique? What components will we encounter in the harmonic spectra if we use a modulation technique?

a)

advantage in operating with a unit power factor

b)

advantage in reducing supply harmonics to meet standards for grid connection

111.

What is the composition of the harmonic spectrum for the supply current in the case of a single-phase converter with power factor correction (you can consider a single-phase rectifier bridge with diodes and a boost converter)?

4 lines
112.

What is the disadvantage of controlling with a fixed fill factor of a power supply circuit made with a single-phase bridge, with diodes and a boost converter?

4 lines
113.

What is meant by synchronized modulation technique?

4 lines
114.

Why is the topology with a diode bridge rectifier followed by a boost converter NOT recommended for power factor control at values different from one (current in phase with voltage)?

4 lines
115.

Calculate the average value of the rectified voltage at a three-phase rectifier with a median point? Sketch the waveforms to calculate.

4 lines

Similar Resources on Wayground

asldsasd

119 questions

asldsasd

quiz

Worksheet

•

University

MERIDIANOS LOCALIZACIÓN

111 questions

MERIDIANOS LOCALIZACIÓN

quiz

Worksheet

•

University

🤗HW26: 11.23

120 questions

🤗HW26: 11.23

quiz

Worksheet

•

7th Grade - University

Semestral Génetica

118 questions

Semestral Génetica

quiz

Worksheet

•

University

HEMATOLOGY ASSESSMENT EXAM SEMINAR 1&2

110 questions

HEMATOLOGY ASSESSMENT EXAM SEMINAR 1&2

quiz

Worksheet

•

University

CUET MOCK test Zoology Shillong COllege

119 questions

CUET MOCK test Zoology Shillong COllege

quiz

Worksheet

•

University

physiology test

120 questions

physiology test

quiz

Worksheet

•

University

Exam 4 (Medsurg):Anemia

110 questions

Exam 4 (Medsurg):Anemia

quiz

Worksheet

•

University