Half Current Line Stress by LED Lamps less 25 Watt Equipped With a Simple Nonlinear Passive PFC

Konferenz: PCIM Europe 2014 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
20.05.2014 - 22.05.2014 in Nürnberg, Deutschland

Tagungsband: PCIM Europe 2014

Seiten: 8Sprache: EnglischTyp: PDF

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Autoren:
Jaschke, R.; Hoffmann, K. F. (Helmut-Schmidt-University / University of the Federal Armed Forces Hamburg, Germany)

Inhalt:
Only the power factor of LED lamps greater than 25 Watt is regulated. The total RMS grid current of billions of LED lamps (e.g. 6 Watt) is too high. By using a simple nonlinear passive topology for Power Factor Correction in combination with a flyback converter this RMS value can be significantly reduced nearly by factor two. By this, the power factor of λ = 0.45 is increased to λ = 0.90. Concerning the big changing of the DC voltage can be neglected because the control of the flyback converter generates a constant LED-current. The presented measurement results verify this theory.