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All Journal Jurnal Teknologi Elektro Dinasti International Journal of Economics, Finance & Accounting (DIJEFA)
Ramadhan, Eko
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Economics, Econometrics & Finance Electrical & Electronics Engineering

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Perancangan Driver Wireless Power Transfer Menggunakan Topologi Kompensasi LCC Dalam Peningkatan Efisiensi Transfer Daya Listrik Nurrozan, Iqbal; Hakim, Galang Persada Nurani; Ramadhan, Eko
Jurnal Teknologi Elektro Vol 16, No 2 (2025)
Publisher : Electrical Engineering, Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jte.2025.v16i2.004

Abstract

Mode kompensasi yang berbeda memiliki sensitivitas berbeda terhadap perubahan koefisien kopling sistem wirelss power transfer (WPT). Nilai puncak arus kumparan transmisi berdasarkan mode kompensasi double LCC berubah relatif sedikit ketika beban berubah. Rangkaian double LCC memiliki efek penyaringan dan kehilangan siaga yang rendah saat dinamis sehingga mampu memberikan toleransi misalignment dan meningkatkan efisiensi transfer daya. Perancangan driver wirelss power transfer menggunakan topologi kompensasi induktor-kapasitor-kapasitor (LCC) yang diterapkan pada sisi transmitter dan receiver. Nilai induktor dan kapasitor dianalisa untuk mendapatkan komponen yang sesuai. Kumparan pemancar dan penerima dengan nilai induktansi dan resistansi yang beragam diuji dan dianalisa untuk mendapatkan output daya serta efisiensi yang optimal. Frekuensi 20 kHz digunakan untuk membangkitkan arus bolak balik pada rangkaian inverter. Pada jarak kumparan terdekat 0 cm dengan suplai tegangan 12 V DC mampu mentransmisikan tegangan sebesar 7,55 V DC dan arus sebesar 0,67 mA. Daya yang dihasilkan sebesar 5,06 watt. Efisiensi daya yang dihasilkan dengan menggunakan kompensasi LCC sebesar 44,15 %. Kumparan Tx dan Rx memiliki jumlah lilitan yang sama yaitu 100 dengan bentuk spiral persegi.
Detecting Financial Statement Fraud in Public Sector Institutions: Insights from Internal Auditors in Law Enforcement Organizations Ramadhan, Eko; Jatmiko, Tri
Dinasti International Journal of Economics, Finance & Accounting Vol. 7 No. 2 (2026): Dinasti International Journal of Economics, Finance & Accounting (May-June 2026
Publisher : Dinasti Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/dijefa.v7i2.6907

Abstract

This study aims to explore the role of auditors in detecting fraudulent financial statements within police agencies, particularly at the Regional Police (POLDA) level. Using a qualitative approach with an interpretive paradigm and phenomenological methods, this study examines the experiences of internal auditors from the Regional Supervisory Inspectorate (Itwasda) in dealing with the dynamics of public sector financial oversight. Data were collected through semi-structured interviews and audit document analysis. The results indicate that the role of auditors is not limited to detection functions but also encompasses fraud prevention and response through a risk-based approach and cross-institutional collaboration. Key challenges include limited access to information, bureaucratic complexity, and potential conflicts of interest within the organizational structure. This study enriches the forensic accounting literature by presenting a contextual perspective from the public sector and reaffirms the relevance of Responsive Regulation theory in audit practice.
Co-Authors Galang Persada Nurani Hakim Nurrozan, Iqbal Tri Jatmiko