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Dead time compensation method for voltage-fed PWM inverter / Seon-Hwan Hwang in IEEE transactions on energy conversion, Vol. 25 N° 1 (Mars 2010) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 25 N° 1 (Mars 2010) . - pp. 1 - 10 Titre : Dead time compensation method for voltage-fed PWM inverter Type de document : texte imprimé Auteurs : Seon-Hwan Hwang, Auteur ; Jang-Mok Kim, Auteur Année de publication : 2010 Article en page(s) : pp. 1 - 10 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : PI  control;  PWM  invertors;  electric  current  control;  power  conversion  harmonics Résumé : A new dead time compensation method for a pulsewidth modulation (PWM) inverter is proposed. In the PWM inverter, voltage distortion due to the dead time effects produces fifth and seventh harmonics in the phase currents of the stationary reference frame, and a sixth harmonic in the d- and q-axis currents of the synchronous reference frame, respectively. In this paper, the sixth harmonic of the integrator output of the synchronous d-axis proportional-integral (PI) current regulator is used to compensate the output voltage distortion due to the dead time effects, since the integrator output has ripple corresponding to six times the stator fundamental frequency. The proposed method can be easily implemented by feedforwardly adding compensation voltages to the output reference voltage of the synchronous PI current regulator. The proposed method, therefore, has some significant advantages such as simple implementation without additional hardware, easy mathematical computation, no offline experimental measurements, and application in both the steady state and the transient state. The validity of the proposed compensation algorithm is shown through several experiments. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5308357&sortType%3Das [...] [article] Dead time compensation method for voltage-fed PWM inverter [texte imprimé] / Seon-Hwan Hwang, Auteur ; Jang-Mok Kim, Auteur . - 2010 . - pp. 1 - 10. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 25 N° 1 (Mars 2010) . - pp. 1 - 10 Mots-clés : PI  control;  PWM  invertors;  electric  current  control;  power  conversion  harmonics Résumé : A new dead time compensation method for a pulsewidth modulation (PWM) inverter is proposed. In the PWM inverter, voltage distortion due to the dead time effects produces fifth and seventh harmonics in the phase currents of the stationary reference frame, and a sixth harmonic in the d- and q-axis currents of the synchronous reference frame, respectively. In this paper, the sixth harmonic of the integrator output of the synchronous d-axis proportional-integral (PI) current regulator is used to compensate the output voltage distortion due to the dead time effects, since the integrator output has ripple corresponding to six times the stator fundamental frequency. The proposed method can be easily implemented by feedforwardly adding compensation voltages to the output reference voltage of the synchronous PI current regulator. The proposed method, therefore, has some significant advantages such as simple implementation without additional hardware, easy mathematical computation, no offline experimental measurements, and application in both the steady state and the transient state. The validity of the proposed compensation algorithm is shown through several experiments. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5308357&sortType%3Das [...]