AC-DC-AC Power Converters with Novel Approach to Power Factor Correction in Three-Phase Systems

Santos, Euzeli Cipriano dos; Silva, E.R.C. da; Bento, Aluizio A. M.

doi:10.1109/apec.2009.4802733

Cited by 2 publications

(1 citation statement)

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“…It gives lower number of switching devices comparing to a classical 2-level AC-DC-AC converter which corresponds to reduced number of control channels, IGBT driver circuits etc. Despite above advantages of a 2-level simplified converter for obtaining sinusoidal current there is a necessity to maintain higher DC voltage, that gives higher voltage stress of converter semiconductor devices [2]- [4]. This problem can be solved by application of a 3L-NPC power modules with clamping diodes.…”

Section: Introductionmentioning

confidence: 99%

Application of Simplified Neutral Point Clamped Multilevel Converter in a Small Wind Turbine

Mlodzikowski

Milczarek

Malinowski³

2014

Electrical, Control and Communication Engineering

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In low power distributed generation systems low cost together with the energy quality requirements are a key element. It is known that quality of voltage waveforms generated from multilevel converters is better in comparison with those from two-level. Due to advancements in power electronics and microcontrollers, multilevel converters are being built with the use of integrated power modules thus this type of converters are getting more compact in size. This paper investigates performance of a derivation from the most popular multilevel topology - a neutral point clamped converter (NPC). Applying the idea for simplifying the topology by reducing the number of switches (what came from drives) this NPC converter is capable of bidirectional AC/DC/AC operation. For the AC/DC part two schemes are tested: Direct Torque Control Space Vector Modulated and Field Oriented Control but for the DC/AC part a control scheme utilizing the proportional-resonant controller was chosen. Laboratory setup was based on a permanent magnet synchronous generator with control and acquisition completed with the help of dSpace 1005 control box. Experimental verification shows that system operates properly.

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Section: Introductionmentioning

confidence: 99%