A single-phase full-bridge inverter feeds a resistive load of R = 50 at nominal voltage 220V/50Hz...
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A single-phase full-bridge inverter feeds a resistive load of R = 50 at nominal voltage 220V/50Hz from 400V DC supply. If unipolar SPWM technique is used and the carrier frequency is 5KHz, answer the following: 1. Find the modulation index. 2. The peak off-state voltage VBR of each transistor. 3. The peak current of each transistor. (2 marks) (1 mark) (1 mark) 4. The peak current of each feedback diode. (1 mark) 5. What is the minimum allowable DC voltage to insure working in linear modulation region ? 6. What is the harmonic component that has the highest magnitude after the fundamental? (2 marks) (2 marks) 7. With the same DC supply voltage, what is the ratio between the output power from the full- bridge inverter to the output power from the half-bridge inverter ? (1 mark) A single-phase full-bridge inverter feeds a resistive load of R = 50 at nominal voltage 220V/50Hz from 400V DC supply. If unipolar SPWM technique is used and the carrier frequency is 5KHz, answer the following: 1. Find the modulation index. 2. The peak off-state voltage VBR of each transistor. 3. The peak current of each transistor. (2 marks) (1 mark) (1 mark) 4. The peak current of each feedback diode. (1 mark) 5. What is the minimum allowable DC voltage to insure working in linear modulation region ? 6. What is the harmonic component that has the highest magnitude after the fundamental? (2 marks) (2 marks) 7. With the same DC supply voltage, what is the ratio between the output power from the full- bridge inverter to the output power from the half-bridge inverter ? (1 mark)
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