Wavelet Based Reference Current Calculation Method for Active Compensation Systems

摘要

Active compensation and filtering systems have been becoming more important day by day for ensuring high quality in power generation and reducing its cost. Passive compensation and filter circuits have been replaced by SCR-based circuits as a result of development in semiconductor technology. Determining reference current for these circuits is quite important for filter and compensation circuits [1-12]. Reference current can be defined as total of all instantaneous active and reactive currents drawn due to unbalanced loads or harmonic distortions. An active compensation circuit is run in a way that it generates this reference current. Most frequently preferred methods for obtain reference current are p-q theory, Peng theory, Park Power theory etc. PWM technique is generally preferred in compensator current control [1-12]. p-q theory, which is most prevalent calculation method, was took reference in this study.