Azary, Reza Akbar (2026) Rancang Bangun Alat Pengujian Efisiensi Daya Aktif Controller BLDC 3 Phase Menggunakan Metode Two-Watt Meter. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Motor BLDC (Brushless DC) banyak digunakan dalam aplikasi modern seperti kendaraan listrik, robotika, dan otomasi industri karena efisiensi tinggi dan performa yang baik. Namun, efisiensi motor BLDC sangat bergantung pada performa controller yang mengatur aliran daya. Pengujian efisiensi controller saat ini masih mengandalkan alat ukur canggih dengan harga sangat tinggi dan memerlukan perhitungan manual, sehingga menyulitkan teknisi skala kecil untuk melakukan evaluasi yang cepat dan akurat. Penelitian ini bertujuan merancang dan membangun alat pengujian efisiensi daya aktif controller BLDC 3-fasa menggunakan metode Two-Watt Meter (TWM). Alat ini mengukur daya input DC secara langsung dan daya output AC tiga fasa tanpa titik netral menggunakan dua wattmeter. Sistem terdiri dari sensor tegangan-arus AC/DC, pengondisi sinyal precision full-wave rectifier, mikrokontroler STM32F411CEU6, dan perangkat lunak dengan antarmuka grafis (GUI) untuk pemantauan real-time. Validasi sensor menggunakan alat standar industri menunjukkan tingkat akurasi tinggi dengan rata-rata error pembacaan di bawah 2%. Pengujian tanpa beban menghasilkan efisiensi 87,28% dengan daya input 129,13 W dan output 112,69 W, sedangkan dengan beban pengereman mencapai efisiensi 89,71% dengan daya input 429,69 W dan output 385,48 W. Alat ini menjadi solusi praktis, terjangkau, dan akurat untuk evaluasi performa controller BLDC, khususnya bagi perusahaan kecil menengah dan teknisi yang membutuhkan instrumen pengujian efisiensi dengan biaya operasional rendah.
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BLDC (Brushless DC) motors are widely used in modern applications such as electric vehicles, robotics, and industrial automation due to their high efficiency and excellent performance. However, the efficiency of BLDC motors is highly dependent on the performance of the controller that regulates the power flow. Current controller efficiency testing still relies on sophisticated measuring instruments that are very expensive and require manual calculations, making it difficult for small-scale technicians to perform quick and accurate evaluations. This research aims to design and build a 3-phase BLDC controller active power efficiency testing tool using the Two-Watt Meter (TWM) method. This tool measures DC input power directly and three-phase AC output power without a neutral point using two-watt meters. The system consists of AC/DC voltage-current sensors, a precision full-wave rectifier signal conditioner, an STM32F411CEU6 microcontroller, and software with a graphical user interface (GUI) for real-time monitoring. Sensor validation using industry-standard tools showed a high level of accuracy with an average reading error of less than 2%. No-load testing resulted in an efficiency of 87.28% with an input power of 129.13 W and an output of 112.69 W, while braking load testing achieved an efficiency of 89.71% with an input power of 429.69 W and an output of 385.48 W. This tool is a practical, affordable, and accurate solution for evaluating BLDC controller performance, especially for small and medium-sized companies and technicians who need efficiency testing instruments with low operating costs.
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