Position control of d. c. motors has been done by means of pulse width modulation.
It consists of a doubly fed induction generator (DFIG) and a voltage-source pulse width modulation (PWM) rectifier-inverter used, as an AC exciter.
The flow of current is controlled by phase shifted pulse width modulation.
This paper studied the three-phase PWM(pulse width modulation) rectifier in dual PWM variable frequency speed regulation system.
The inverse control method for pulse width modulation (PWM) inverter-fed induction motors is discussed.
A novelty space vector pulse width modulation (SVPWM) technique for the two-phase inverter-fed asynchronous motors system is proposed, which can be widely used in the low or middle power level field.
Capacitive pressure difference sensor is fixed in the center of the tube and connected with the pulse width modulation circuit so that capacitive flow transducer is made up.
Virtual flux in a three-level pulse width modulation rectifier
Because of built-in PWM circuit (pulse width modulation circuit), dimming range is wider than earlier type products.
The position of DC motor is controlled by pulse width modulation.
