Week 5
Inverter Testing (Voltage)
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Introduction
Introduction
Testing was undertaken under 5 categories
PWM signal testing.
Voltage and Current testing.
Noise analysis.
Power quality analysis.
Temperature analysis.
PWM signal Testing
PWM signal Testing
Figure: PWM waveform with noise
Figure: PWM waveform without noise
Voltage and Current Testing
Voltage and Current Testing
Conditions
80% of rated condition in the load
switching frequency = 5kHz
Modulation index = 0.8
Output from Solar Emulator Starting from 20V / 1A was increased increased by 20 V steps up to 400V.
Input and output power relationship was observers using Watt meter.
Figure: Voltage waveform of inverter output with input of 100V DC
Figure: Current waveform of inverter output with input of 100V DC
Figure: Voltage waveform of inverter output with input of 300V DC
Figure: Current waveform of inverter output with input of 300V DC
Observations
Observations
Inverters were successful with generating an AC voltage
Significant noise was present in the negative half cycle.
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