BULLETIN of the

POLISH ACADEMY of SCIENCES

TECHNICAL SCIENCES

BULLETIN of the POLISH ACADEMY of SCIENCES: TECHNICAL SCIENCES
Volume 57, Issue 4, December 2009

Power Electronics in Renewable Energy Systems

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pp 337 - 343

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Control of PWM rectifier under grid voltage dips

M. BOBROWSKA-RAFAL, K. RAFAL, G. ABAD, and M. JASINSKI
This paper investigates control structure for grid connected threephase twolevel Voltage Source Converter (VSC) under distorted grid voltage conditions. Grid voltage is distorted by balanced and unbalanced voltage dips and higher harmonics. To address the problem, the control structure of converter is presented. The control system is a modification of Voltage Oriented Control (VOC) based on Dual Vector Current Controllers (DVCC). Grid synchronization under distorted voltage is achieved by employing Phase Locked Loop (PLL). Simulation and experimental results, which illustrate properties of proposed system, are presented.
Key words:

PWM rectifier, voltage source converters, voltage oriented control, renewable energy, voltage dips.


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Copyright ® Bulletin of the Polish Academy of Sciences: Technical Sciences

January 2010