The issue of electric power quality is gaining importance as the society is increasingly becoming dependent upon the electrical supply. For example, a small power outage could have a great economic impact on industrial consumers. More... more
The issue of electric power quality is gaining importance as the society is increasingly becoming dependent upon the electrical supply. For example, a small power outage could have a great economic impact on industrial consumers. More generally, new equipments are more sensitive to power quality variations. In this paper, the influence of the irradiance fluctuations on the power quality of a photovoltaic / battery system powering an asynchronous motor is assessed. Especially, the current and voltage harmonic distortions are considered. The harmonic distortion parameters, the electric power parameters of the system, and the irradiance were collected simultaneously using a power analyzer and a pyranometer. An adjustable speed drive was used to apply a vector control to the motor operating under its nominal conditions. The PV/battery system was configured so that the motor active power is constant throughout the experiment. The data analysis shows that when the solar irradiance decreases, the harmonic distortion parameters and the reactive power of the motor increase linearly and vice versa. The controlled motor generates current and voltage harmonic distortions with amplitudes higher than those recommended by the IEEE standards. The harmonics of rank 5, 7 and 11 are the main component of harmonic contents. The controlled motor behaves as a capacitive load for irradiance about 800 W/m².
The issue of electric power quality is gaining importance as the society is increasingly becoming dependent upon the electrical supply. For example, a small power outage could have a great economic impact on industrial consumers. More... more
The issue of electric power quality is gaining importance as the society is increasingly becoming dependent upon the electrical supply. For example, a small power outage could have a great economic impact on industrial consumers. More generally, new equipments are more sensitive to power quality variations. In this paper, the influence of the irradiance fluctuations on the power quality of a photovoltaic / battery system powering an asynchronous motor is assessed. Especially, the current and voltage harmonic distortions are considered. The harmonic distortion parameters, the electric power parameters of the system, and the irradiance were collected simultaneously using a power analyzer and a pyranometer. An adjustable speed drive was used to apply a vector control to the motor operating under its nominal conditions. The PV/battery system was configured so that the motor active power is constant throughout the experiment. The data analysis shows that when the solar irradiance decreas...
