Je-Wook Park, Seong-Won Baek, Jang-Mok Kim, Dong-Choon Lee, and Kyo-Beum Lee, "Fault Diagnosis for 3-Phase Diode Rectifier using Harmonic Ripples of DC Link Voltage," The Transactions of the Korean Institute of Power Electronics, vol. 16, no. 5, pp. 457–4 > Paper

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Paper

Domestic Journals Je-Wook Park, Seong-Won Baek, Jang-Mok Kim, Dong-Choon Lee, and Kyo-Beum Lee, "Fault Diagnosis for 3-Phase Diode Rectifier using Harmonic Ripples of DC Link Voltage," The Transactions of the Korean Institute of Power Electronics, vol. 16, no. 5, pp. 457–465, Oct. 2011.

2011

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The fault analysis and detecting algorithm for a 3 phase diode rectifier is proposed. The 3 phase diode rectifier is used for the AC

power rectifier of the PWM inverter. The input power or diode faults cause the ripples of the DC voltage, degradation of the control

performance and life shortening of the DC link capacitor. In this paper, the ripple of the DC voltage is mathematically analyzed for the

earth fault of input power and open circuit fault of the diode, respectively. The fault detection and type of fault can be obtained by

comparing the average DC voltage and the instant DC voltage which is sampled with 6 times of grid frequency. The proposed method

can be easily applicable and doesn't require additional circuit. The experimental and simulation results are presented to verify the

validity of the proposed method.

 

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