Analisis Perbandingan Metode Pengendalian Baterai Untuk Penghalusan Daya Luaran Intermittent Photovoltaic Menggunakan Metode Filtering Simple Moving Average, Moving Median, dan Savitzky-Golay = Comparative Analysis of Battery Control Methods for Power Smoothing in Intermittent Photovoltaic Outputs Using Simple Moving Average, Moving Median, and Savitzky-Golay Filtering Methods