Original title: Control Techniques of Grid Connected PWM Rectifiers under Unbalanced Input Voltage Conditions
Authors: Bejvl, Martin ; Šimek, Petr ; Škramlík, Jiří ; Valouch, Viktor
Document type: Papers
Conference/Event: ELEN 2012, Prague (CZ), 2012-09-11 / 2012-09-12
Year: 2012
Language: eng
Abstract: Current-controlled voltage source converters are widely used in grid-connected applications,for example at ac drives with indirect frequency converters.The structure and parameters of the PLL are developed and proposed in order to cope with the grid containing both the positive and the negative sequence component, and minimize the wrong frequency transients during phase angle steps and also in the start-up stage. The DSC technique was realised. There is also necessary to compensate the negative sequence component in the grid voltage. The negative sequence component of the grid voltage causes ripple of the dc voltage in the intermediate circuit. Several sophisticated topologies of converter current controller were developed, simulated and tested for this purpose. Results of simulation and experimental tests are provided to evaluate different current control schemes and phase locked loop techniques.
Keywords: current controller; DSC (Delayed Signal Cancellation); phase locked loop (PLL)
Project no.: FR-TI1/330 (CEP)
Funding provider: GA MPO
Host item entry: ELEN 2012, ISBN 978-80-01-05096-5

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0211255

Permalink: http://www.nusl.cz/ntk/nusl-126811


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Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers