A hybrid cascaded multilevel inverter with supercapacitor direct integration for wind power systems

Jayasinghe, Shantha Gamini; Vilathgamuwa, D.M.; Madawala, Udaya K.

doi:10.1109/icpe.2011.5944629

Cited by 5 publications

(3 citation statements)

References 26 publications

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“…φ m in (7) is the flux produced by permanent magnets of the generator. Electric torque produced by the generator is given by (9) where p is the number of pole pairs.…”

Section: B Generator Modelmentioning

confidence: 99%

“…The simplest way of incorporating a supercapacitor bank is the direct connection to the common dc-bus. But it suffers from several drawbacks such as limited voltage range, fixed current distribution governed by internal resistors and limited control over the power flow [9]. Effects of these issues can be reduced by placing an interfacing dc-dc converter between the supercapacitor and the dc-bus as shown in Fig.…”

Section: Introductionmentioning

confidence: 97%

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A three-level flying-capacitor rectifier based supercapacitor direct integration scheme for distributed generation systems

Vilathgamuwa

Jayasinghe

2012

2012 IEEE International Symposium on Industrial Electronics

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Supercapacitors are increasingly used as short term energy storage elements in distributed generation systems. The traditional approach in integrating them to the main system is the use of interfacing dc-dc converters which introduce additional costs and power losses. This paper therefore, presents a novel direct integration scheme for supercapacitors and thereby eliminates associated costs and power losses of interfacing converters. The idea is simply to replace ordinary capacitors of three-level flying-capacitor rectifiers with supercapacitors and operate them under variable voltage conditions. An analysis on the reduction of power losses by the proposed system is presented. Furthermore, supercapacitor sizing and implementation issues such as effects of the variable voltage operation and resistive behavior of supercapacitors at high frequencies are also discussed. Simulation results are presented to verify the efficacy of the proposed system in suppressing short term power fluctuations in wind generation system.

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“…φ m in (7) is the flux produced by permanent magnets of the generator. Electric torque produced by the generator is given by (9) where p is the number of pole pairs.…”

Section: B Generator Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

A three-level flying-capacitor rectifier based supercapacitor direct integration scheme for distributed generation systems

Vilathgamuwa

Jayasinghe

2012

2012 IEEE International Symposium on Industrial Electronics

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“…In particular, the advances in power electronics and new emerging needs in renewable energy systems and smart grid applications make the use of multilevel converters a promising alternative to classical 2-level converters, [5]- [6]. The main advantages are related to low total harmonic distortion (THD), low voltage stress of power switching devices and a namely low reduction of voltage derivative, reducing the filter dimension and increasing the system efficiency and power conversion, [7]- [8].…”

Section: Introductionmentioning

confidence: 99%

Dynamic models of multilevel converters by using the power oriented graph technique

Zanasi

Cuoghi

2012

International Symposium on Power Electronics Power Electronics, Electrical Drives, Automation and Motion

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The advances in power electronics and new needs in renewable energy sources lead the multilevel converters to be advantageous compared to 2-level converters. Since modeling tools can be helpful to design new converter topology, this paper presents the dynamic models of the three basic topologies of multilevel converters: the Diode-Clamped, the Flying-Capacitor and the Cascaded H-Bridge converters. These models have been obtained by using the Power Oriented Graph (POG) technique, that is easy to be employed and implemented in Matlab-Simulink R environment. The proposed models are suitable to simulate high frequency sliding mode control and can be easily modified to model hybrid topologies. Simulation results confirm the validity of the presented models.Index Terms-Modeling technique, multilevel converters, power control.

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Hybrid cascaded multilevel inverter with supercapacitor energy storage for grid integration of renewable energy systems

Jayasinghe

Vilathgamuwa

2015

2015 IEEE 11th International Conference on Power Electronics and Drive Systems

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A hybrid cascaded multilevel inverter with supercapacitor direct integration for wind power systems

Cited by 5 publications

References 26 publications

A three-level flying-capacitor rectifier based supercapacitor direct integration scheme for distributed generation systems

A three-level flying-capacitor rectifier based supercapacitor direct integration scheme for distributed generation systems

Dynamic models of multilevel converters by using the power oriented graph technique

Hybrid cascaded multilevel inverter with supercapacitor energy storage for grid integration of renewable energy systems

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