Unit connected operator with diode valve rectifier scheme

Hungsasutra, S.; Mathur, R.M.

doi:10.1109/59.193827

Cited by 16 publications

(3 citation statements)

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“…[1] [2] [3] In these systems the power flow is unidirectional and the control strategy of the wind turbine power electronic converters can be used to mitigate the drawbacks of using diode rectifier. In these applications, each individual wind turbine should contribute to the PCC voltage and frequency control.…”

Section: Imentioning

confidence: 99%

Control strategy of a HVDC-Diode Rectifier connected type-4 off-shore wind farm

Ivan

Ruben

Blasco-Gimenez

et al. 2015

2015 IEEE 2nd International Future Energy Electronics Conference (IFEEC)

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This paper presents a distributed control scheme for voltage and frequency regulation in a point of common connection (PCC) of a wind farm feeding energy to the grid via an HVDC-Diode Rectifier (HVDC-DR) link. Each wind turbine uses a Permanent Magnet Synchronous Generator (PMSG) with a full back-to-back VSI topology connected between the machine terminals and the PCC. The reference voltage and frequency in each wind turbine is obtained from P /V and Q/f droop characteristics respectively, where Q is the reactive power supplied by each wind energy system an P is the active power obtained from the optimum power wind turbine characteristic. PI controllers process the voltage and frequency errors and set d − q axis reference currents. These currents are imposed at the output of the wind energy systems by fast current control loops. The scheme allows for islanded and grid connected operation. Maximum power transfer from each wind turbines to the PCC is achieved, with good dynamic performance. The strategy has been validated by means of detailed simulations of the system.

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Section: Imentioning

confidence: 99%

Control strategy of a HVDC-Diode Rectifier connected type-4 off-shore wind farm

Ivan

Ruben

Blasco-Gimenez

et al. 2015

2015 IEEE 2nd International Future Energy Electronics Conference (IFEEC)

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“…Wind farms with uncontrolled rectifier for HVDC links have been considered recently in the literature [3], [4]. Diode-based HVDC rectifiers has important advantages, including smaller conduction losses, smaller installation cost, and higher reliability with respect to thyristor-based rectifiers [5], [6]. In these systems the power flow is unidirectional and the control strategy of the wind turbine power electronic converters can be used to mitigate the drawbacks of using diode rectifier.…”

Section: Introductionmentioning

confidence: 99%

Distributed control strategy for a wind generation systems based on PMSG with uncontrolled rectifier HVDC connection

Andrade

Blasco-Gimenez

Peña

2015

2015 IEEE International Conference on Industrial Technology (ICIT)

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This paper presents a distributed control technique for voltage, frequency and active/reactive power control of the Point of Common Connection (PCC), AC grid, of a wind farm. Each wind turbine uses a Permanent Magnet Synchronous Generator (PMSG) with a full back-to-back VSI topology connected between the machine terminals and the PCC. A Diode-Thyristor converter topology forming a HVDC link is used for connecting the wind farm to the electricity network. The control strategy allows maximum power transfer from the wind turbines to the AC-grid, with good dynamic performance during steady state and transient operation of the AC-grid. Droop control strategies are used to regulate the voltage and frequency in the AC-grid respectively. The proposed control technique has been shown to be robust under load changes in islanded operation, capacitor bank switching, tracking of power reference and wind turbine reactive power distribution. The control technique has been validated with PSIM simulations of the system.

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“…Diode-based rectifiers for unidirectional HVdc links have been suggested in the past as an alternative to increase efficiency and system reliability [21,16]. Specifically, diode rectifiers have been proposed for the connection of single unit generators to HVdc grids with Line Commutated Converters (LCC) in order to achieve reduced losses, decreased complexity and enhanced reliability [7].…”

Section: Introductionmentioning

confidence: 99%