Analisis Simulasi Inverter Multilevel Kaskade dengan Teknik Selective Harmonic Elimination Pulse Width Modulation

Ayong Hiendro, Ismail Yusuf

Abstract


Salah satu teknik pengendalian saklar-saklar semikonduktor daya dari inverter multilevel adalah menggunakan Pulse Width Modulation (PWM). Dari berbagai teknik PWM, Selective Harmonic Elimination Pulse Width Modulation (SHEPWM) merupakan teknik yang andal dalam mengeliminasi harmonisa-harmonisa tingkat rendah. Tujuan dari makalah ini adalah menjabarkan proses perhitungan, perancangan dan simulasi inverter multilevel kaskade dengan menggunakan teknik SHEPWM. Pulsa-pulsa pensaklaran setiap saklar semikonduktor daya inverter dibangun berdasarkan sudut-sudut pensaklaran optimum agar komponen harmonisa tertentu dapat tereliminasi. Demikian pula gelombang tegangan AC yang dihasilkan dapat diprediksi bentuknya berdasarkan hasil rancangan. Selanjutnya simulasi komputer dilakukan dengan perantara perangkat lunak PSPICE. Analisis hasil simulasi terhadap inverter 9-level menunjukkan komponen harmonisa ke-3, 5 dan 7 tereliminasi sama sekali. Hasil ini sesuai dengan perhitungan dan perancangan secara teoritis.


Keywords


Indeks Modulasi; Inverter Multilevel; Pulse Width Modulation; Selective Harmonic Elimination; Sudut Pensaklaran Optimum

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References


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DOI: http://dx.doi.org/10.26418/jp.v7i1.40892

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