New Overall Control Strategy for Small-Scale WECS in MPPT and Stall Regions With Mode Transfer Control

Dalala, Zakariya; Zahid, Zaka Ullah; Lai, Jih-Sheng

doi:10.1109/tec.2013.2287212

Cited by 83 publications

(41 citation statements)

References 39 publications

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“…Even though a simple model of a DC Generator was utilized, it may be easily shown that in case permanent magnet generator (PMG) driving a three-phase diode rectifier (DR) is utilized, the solution form remains (some scaling should be carried out). Interested readers are referred to [7,11] for detailed modeling of a PMG-DR unit. 2.…”

Section: Discussionmentioning

confidence: 99%

Analytical Derivation of Electrical-Side Maximum Power Line for Wind Generators

Kolesnik

Kuperman

2017

Energies

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Abstract:In order to enhance the maximum power point tracking (MPPT) speed of solar generators, offline calculated maximum power line (MPL) is often used as a feed-forward signal added to the output of MPPT controller. MPL is nonlinear static electrical characteristic of renewable energy generators connecting all the maximum power points for given temperature. In this letter, electrical side MPL is derived for a typical wind turbine generator (WTG). It is shown that MPLs of solar and wind generators possess similar structure, supporting the similarity between the two energy conversion processes.

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Section: Discussionmentioning

confidence: 99%

Analytical Derivation of Electrical-Side Maximum Power Line for Wind Generators

Kolesnik

Kuperman

2017

Energies

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“…As described in Section C, ( ) A s can be defined as the following transfer function of the 6 kW variable speed WECS [21] in this study according to (7). The parameters of the 6 kW variable speed WECS are listed in the Appendix.…”

Section: Determination Of the Controller Parametersmentioning

confidence: 99%

“…The HCS control normally requires the rotor speed and the turbine power variation as inputs for the MPPT. Recently, other variables, like the dclink voltage and the duty cycle, are used as the inputs as well [6], [7]. It has the advantage of using very few parameters and little feedback information as well as being simple and robust [8], [9].…”

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confidence: 99%

<inline-formula><tex-math>${\cal L}_1$</tex-math></inline-formula> Adaptive Speed Control of a Small Wind Energy Conversion System for Maximum Power Point Tracking

Zhao

Rasmussen

et al. 2014

IEEE Trans. Energy Convers.

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“…However, when a full-bridge diode rectifier is used in the WECS, a large torque ripple will be induced by a large current THD, caused by the commutation overlap effect of the diode rectifier [13,14]. For example, Figure 1 shows some tested results of a 1.2 kW WECS demonstration platform established in [13] at wind speed 10 m/s.…”

Section: Introductionmentioning

confidence: 99%

On Reducing the Shaft Torque Ripple of Small-to-Medium-Scale Wind Energy Conversion Systems Using Multi-Pulse Autotransformer Rectifier

Chen

2018

Energies

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Abstract:In a small-to-medium-scale wind energy conversion system (WECS), diode rectifiers rather than pulse-width modulated (PWM) rectifiers are widely adopted due to the features of high reliability and low cost. However, large current harmonics are induced in the generator phase current by commutations of diode rectifier, eventually causing large torque ripple on the drive-train of the WECS and making it more likely to be fatigue breakdown. In this paper, a 12-pulse autotransformer rectifier unit (ATRU) with reduced volume and weight is proposed for WECS application. By analyzing the characteristics of the input current and output voltage of the ATRU within the entire operation range of WECS, the method to properly design its parameters is proposed. A 1.2 kW direct-drive WECS demonstration platform using ATRU is built in the lab. A modified sensorless overall power control strategy is adopted to control the WECS. Experimental tests are carried out and the results not only validate the feasibility of implementing ATRU in WECS applications, but also prove its high torque ripple reduction ability.

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New Overall Control Strategy for Small-Scale WECS in MPPT and Stall Regions With Mode Transfer Control

Cited by 83 publications

References 39 publications

Analytical Derivation of Electrical-Side Maximum Power Line for Wind Generators

Analytical Derivation of Electrical-Side Maximum Power Line for Wind Generators

<inline-formula><tex-math>${\cal L}_1$</tex-math></inline-formula> Adaptive Speed Control of a Small Wind Energy Conversion System for Maximum Power Point Tracking

On Reducing the Shaft Torque Ripple of Small-to-Medium-Scale Wind Energy Conversion Systems Using Multi-Pulse Autotransformer Rectifier

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