Performance of a Brushless DC (BLDC) motor using a three-phase inverter driven by Hydrogen Fuel Cell

1. What is the main purpose of a DC-DC converter in the fuel cell-powered BLDC motor system?

a) Convert AC to DC
b) Generate PWM signals
c) Step up or stabilize the DC voltage from fuel cell
d) Control rotor speed

2. Which of the following is NOT part of the experimental setup?

a) Graphene Supercapacitor
b) BLDC Motor
c) DC-DC Converter
d) Hall-effect Current Sensor

3. What waveform is generated by the 3-phase inverter?

a) Pure square wave
b) Balanced sinusoidal wave
c) DC pulse
d) Single-phase AC

4. Why does the inverter output current initially overshoot?

a) Voltage mismatch
b) High load impedance
c) Inrush current at startup
d) Capacitor malfunction

5. Which component converts chemical energy into electrical energy in this system?

a) Inverter
b) Controller
c) Hydrogen Fuel Cell
d) BLDC Motor