The ratio between the modulating signal voltage and the carrier voltage is called the Modulation index.
<h3>What are the modulation index and its formula?</h3>
The carrier voltage and the voltage of the modulating signal (Vm) are multiplied to create the modulation index (Vc). The modulation index equation is given below. m = Vm/Vc.
The modulation index should be represented by an integer between 0 and 1. When m exceeds 1, the modulated waveform exhibits severe distortion.
It is the peak to peak ratio of the carrier wave to the modulating signal. μ = Am/Ac. It indicates the level of distortion or noise. Reduced transmitted signal distortion is correlated with a lower modulation index value.
The modulation index is calculated by comparing the line-to-neutral inverter output voltage's fundamental component amplitude to one-half of the available DC bus voltage.
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