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  • No : 21530
  • Release Date : 2018/08/22 16:28
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PWM control

What is PWM control?
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PWM is an acronym for Pulse Width Modulation and varies the switching pulse width of transistors. This method creates many pulses within a single cycle of the output waveform and outputs the average voltage of all pulse width to as a sine wave.
The following shows the principle of voltage adjustment by the PWM inverter:
The figure compares the modulated wave of a triangular waveform and the signal wave of a sine wave.
The state where the signal wave is larger than the triangular wave is regarded as the positive logic and switches the transistor.
By this switching, the phase-to-phase voltage is output voltage in which the average voltage of pulses modulated into a sine wave.
This control allows for controlling the frequency and voltage by the inverter. Figure 1
Product Name
Inverter, magnet motor drive
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