WHAT IS THE IDEAL VOLTAGE WAVEFORM?
Ideal power quality for the source of energy to an electrical load is represented by the single-phase waveform of voltage shown in Figure 1.1 and the three-phase waveforms of voltage shown in Figure 1.2.
The amplitude, frequency, and any distortion of the waveforms would remain within prescribed limits.
When the voltages shown in Figure 1.1 and Figure 1.2 are applied to electrical loads, the load currents will have frequency and amplitudes dependent on the impedance or other characteristics of the load.
If the waveform of the load current is also sinusoidal, the load is termed “linear.” If the waveform of the load current is distorted, the load is termed “nonlinear.”
The load current with distorted waveform can produce distortion of the voltage in the supply system, which is an indication of poor power quality.
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