Advances in PWM Inverter
SVPWM
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The evolution of power device technology and the development of large integrated circuits in the recent years have paved the way for the modern fast switching PWM technique for DC-AC power conservation. One of the standard PWM technique is the space-vector-modulation (SVM)technique utilized for DC-AC power conservation, the solution to have harmonic free mitigation in high power converter. Instead of having a continuous pulse as in classical square wave inverter,multiple pulses in the output can have control over harmonic content and the rms value of thevoltage across the load. SVPWM is based ...
The evolution of power device technology and the development of large integrated circuits in the recent years have paved the way for the modern fast switching PWM technique for DC-AC power conservation. One of the standard PWM technique is the space-vector-modulation (SVM)technique utilized for DC-AC power conservation, the solution to have harmonic free mitigation in high power converter. Instead of having a continuous pulse as in classical square wave inverter,multiple pulses in the output can have control over harmonic content and the rms value of thevoltage across the load. SVPWM is based on the space vector representation of voltage in the d, q plane. The DQ transformation is a transformation of coordinate from three-phase stationary coordinate system to the dq rotating coordinate system. This transformation is made in two step:1:- A transformation from the three-phase stationary coordinate system to the two- phase, socalled beta, stationary coordinate system and2:- A transformation from the beta stationary coordinate system to the dq rotating coordinate system.The dq component are fond by Park transform, where the total power, as well as the impedance,remain unchanged.
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