WorksheetsMultilevel Cascaded H-Bridge (CHB) Inverter
Total questions: 49
Worksheet time: 25mins
Fill in the blank: The process of changing electrical energy from one form to another, such as from DC to AC, is called _________
Power Conversion
Electrolysis
Thermal Expansion
Magnetic Induction
Fill in the blank: The inverter topology discussed in the article is called _________.
CHB Multilevel Inverter
Single Phase Bridge Inverter
Push-Pull Inverter
Half Bridge Inverter
Fill in the blank: The technique used for modulating the inverter in the article is called _________.
Multicarrier Modulation Technique
Pulse Width Modulation
Sinusoidal Pulse Modulation
Space Vector Modulation
Fill in the blank: The abbreviation THD stands for _________.
Total Harmonic Distortion
Thermal Heat Dissipation
Transistor High Drive
Total Harmonic Delay
A multilevel Cascaded H-Bridge (CHB) inverter is:
a power electronic device that synthesizes a desired voltage from several separate DC sources using H-Bridge cells.
a device that stores electrical energy in batteries for later use.
a transformer used to step up or step down AC voltage levels.
a circuit that converts AC to DC using diodes only.
One advantage of a multilevel Cascaded H-Bridge (CHB) inverter is:
It produces output with lower total harmonic distortion (THD).
It requires fewer switches than a single-level inverter.
It increases the frequency of the output signal.
It eliminates the need for any control circuitry.
Which of the following is NOT an advantage of a multilevel Cascaded H-Bridge (CHB) inverter?
Low harmonic distortion
Can handle large power
Requires fewer components than diode-clamped inverters
High switching losses
Fill in the blank: The formula to calculate the number of output voltage levels (m) in a multilevel Cascaded H-Bridge (CHB) inverter is __.
m = (2H + 1)
m = (H + 1)
m=(H2+1)
m = (2H - 1)
Fill in the blank: The formula to calculate the carrier requirement (cr) for phase-shifted multicarrier PWM is __.
cr = 360°/(m-1)
cr = 180°/(m+1)
cr = 90°/m
cr = 360°/m
Which modulation technique is used in the research for multilevel Cascaded H-Bridge (CHB) inverter?
Multicarrier phase-shifted
Level-shifted
Sinusoidal PWM
Space vector PWM
One disadvantage of a multilevel Cascaded H-Bridge (CHB) inverter is:
It requires a large number of isolated DC sources.
It has a very low output voltage.
It is less efficient than single-level inverters.
It cannot be used for high power applications.
Which modulation technique is shown in Gambar 1?
Phase-shifted
Level-shifted
In-Phase Disposition
Phase Opposite Disposition
Fill in the blank: The modulation technique where all triangle carriers are in phase is called ________.
In-Phase Disposition (IPD)
Phase Opposition Disposition (POD)
Alternate Phase Opposition Disposition (APOD)
Carrier Phase Shift Modulation (CPSM)
Which modulation technique uses all triangle carriers in opposite disposition as shown in Gambar 3?
In-Phase Disposition
Alternative Phase Opposite Disposition
Phase Opposite Disposition
Phase-shifted
Fill in the blank: The formula for amplitude modulation index is given by ________.
m_a = V_{m} / [V_{cr}(m-1)] for 0 ≤ m_a ≤ 1
m_a = V_{cr} / V_{m} for 0 ≤ m_a ≤ 1
m_a = V_{m} + V_{cr} for 0 ≤ m_a ≤ 1
m_a = V_{cr} - V_{m} for 0 ≤ m_a ≤ 1
Which modulation technique is shown in Gambar 4, where all triangle carriers are at reference level?
In-Phase Disposition
Alternative Phase Opposite Disposition
Phase Opposite Disposition
Level-shifted
What is the first step in the program design flowchart?
Setting Program
Inisialisasi pin Output arduino
Mulai
Compile program
Refer to the 'Diagram Alir Perancangan Program'. What is the final step in the flowchart?
Driver MOSFET
Selesai
Inverter
Upload program pada mikrokontroler
Fill in the blank: The PWM pulse generation program uses the ________ microcontroller for testing phase-shifted and level-shifted modulation techniques.
Arduino Mega 2560
Raspberry Pi Pico
ESP32
STM32F103
The PWM pulse generation program only uses ports 2, 3, 4, 5, 6, 9, 10, and 11 on the Arduino Mega 2560.
True
False
Which diagram shows the PWM switch S3 with APOD modulation?
Gambar 7
Gambar 9
Gambar 11
Gambar 5
Based on the explanation, what is the main difference between multicarrier level-shifted and phase-shifted modulation techniques?
Multicarrier level-shifted uses more carrier signals
Phase-shifted uses more carrier signals
Both use the same number of carrier signals
There is no difference
What type of PWM switch waveform is shown in the APOD scheme?
Sinusoidal
Triangular
Square
Sawtooth
Fill in the blank: The measured output voltage (V_rms) for the multicarrier phase-shifted technique before the transformer is ______ Volt AC.
8.22
10.50
6.75
12.00
Fill in the blank: The measured peak voltage (V_pp) for the multicarrier phase-shifted technique before the transformer is ______ Volt.
25.20
18.75
32.10
21.45
Fill in the blank: The frequency measured for the multicarrier phase-shifted technique before the transformer is ______ Hz.
47.79
50.00
60.00
45.00
What is the Total Harmonic Distortion (THD) value obtained for the multicarrier phase-shifted technique?
25.20%
8.22%
16.4%
47.79%
Which technique is used for the inverter cell output shown in these diagrams?
Multicarrier level-shifted
Multicarrier phase-shifted
Sinusoidal PWM
IPD
What modulation scheme is used for the inverter cell output shown in these diagrams?
Multicarrier phase-shifted
Multicarrier level-shifted
IPD
APOD
Based on the measurement data using the multicarrier level-shifted IPD modulation technique before the voltage is increased using a transformer, what is the value of Vms obtained?
8.48 Volt
25.80 Volt
51.36 Volt
23.6%
What is the THD value obtained from the measurement using the multicarrier level-shifted IPD modulation technique before the voltage is increased using a transformer?
23.6%
15.2%
30.8%
8.9%
Based on the measurement data using the multicarrier level-shifted POD modulation technique before the transformer is installed, what is the value of Vms obtained?
8.38 Volt
26.4 Volt
50.25 Hz
22.8%
What is the THD value obtained from the measurement using the multicarrier level-shifted POD modulation technique before the transformer is installed?
22.8%
15.4%
30.2%
10.7%
Which modulation technique resulted in a lower THD value based on the measurement data?
IPD
POD
Gambar 19 shows the output voltage of inverter cell 1 using which modulation scheme?
IPD
POD
APOD
Gambar 22 shows the output voltage of inverter cell 1 using which modulation scheme?
IPD
POD
APOD
Based on Tabel 1 Data pengukuran pengujian inverter multilevel CHB, what is the THD (%) value for the Phase-shifted technique?
16.4
24.3
8.43
27.20
Which modulation technique resulted in the highest Vms (V) value for the inverter output?
Phase-shifted
IPD
POD
APOD
Fill in the blank: According to the data, the frequency measured before the transformer was applied using the APOD technique is ______ Hz.
51.20
60.00
48.75
55.10
Based on Gambar 26, which modulation technique resulted in the lowest THD (%) for the inverter output?
Phase-shifted
IPD
POD
APOD
Fill in the blank: The Vms value measured before the transformer was applied using the APOD technique is ______ Volt.
8.43
12.56
5.21
10.00
Based on the analysis, the THD value for the APOD technique is ______%.
24.3
15.7
32.8
10.5
What is the output voltage (Vms) for the Phase-Shifted modulation technique?
47.78
32.15
55.60
40.00
What is the output frequency for the Level-Shifted skema IPD modulation technique?
51.35
60.00
45.20
100.00
What is the output voltage (Vms) for the Level-Shifted skema POD modulation technique?
50.20
45.00
60.00
55.75
What is the output frequency for the Level-Shifted skema APOD modulation technique?
51.27
60.00
45.12
38.50
Based on Gambar 28, which modulation technique is used for the output waveform of the multilevel inverter?
multicarrier phase-shifted
multicarrier level-shifted skema IPD
multicarrier level-shifted skema POD
multicarrier level-shifted skema APOD
Based on Gambar 29, which modulation technique is used for the output waveform of the multilevel inverter?
multicarrier phase-shifted
multicarrier level-shifted skema IPD
multicarrier level-shifted skema POD
multicarrier level-shifted skema APOD
Based on Gambar 30, which modulation technique is used for the output waveform of the multilevel inverter?
multicarrier phase-shifted
multicarrier level-shifted skema IPD
multicarrier level-shifted skema POD
multicarrier level-shifted skema APOD
