Control strategy of wide-speed-range doubly fed induction generator based on stator-winding short circuited in low speed mode

Mengjie, Li; Wang, Lingxiang; Xie, Zhen

doi:10.23919/chicc.2017.8028813

Cited by 2 publications

(5 citation statements)

References 6 publications

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“…|V pu is given for various values V pu = 1; 0.8; 0.6; 0.4 of the wind velocity [1,7,11,[13][14][15][16][17]. The black points indicate the maximum power P E of the turbine for a given wind velocity.…”

Section: Application Suggestionsmentioning

confidence: 99%

“…. For example, from [5,11], it follows that a doubly fed induction generator can work at a speed varying in the range of (0.7,...,1.3) N Ω . The method proposed in this paper allows a significant extension of the speed range for a given value of the output voltage, employing the possibility of a stepper change of the phase current sequence.…”

Section: Introductionmentioning

confidence: 99%

“…Using three-phase or multiphase induction machines as a generator, the minimum speed when the voltage can obtain the nominal (required) value should not be lower than about two-thirds of the nominal speed Ω N [5,6,10] taken for the rated frequency f N = f 0 . For example, from [5,11], it follows that a doubly fed induction generator can work at a speed varying in the range of (0.7, ..., 1.3) Ω N . The method proposed in this paper allows a significant extension of the speed range for a given value of the output voltage, employing the possibility of a stepper change of the phase current sequence.…”

Section: Introductionmentioning

confidence: 99%

“…For the generator driven by the wind turbine (example), the mechanical characteristics are shown in Figure4b. The wind turbine family of characteristics velocity[1,7,11,[13][14][15][16][17]. The black points indicate the maximum power E P of the turbine for a given wind velocity.…”

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confidence: 99%

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Voltage Control of Multiphase Cage Induction Generators at a Speed Varying over a Wide Range

Drozdowski

Cholewa

2021

Energies

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The subject of this publication is a method of controlling the DC voltage of a PWM rectifier supplied by a multiphase cage induction generator with the number of stator phases greater than three operating in a wide range of driving speeds. Voltage regulation is performed by changing the frequency and amplitude of the stator voltages with simultaneous switching of the phase sequence of these voltages. The step change of the voltage sequence is made in the designated ranges of the generator speed, which enables the stabilization of the output voltage in a wide range from the minimum speed of about 25% of the rated speed. Such sequence switching changes the number of pole pairs produced by the winding for each supply sequence. The difference compared to multi-speed induction machines is that, in the presented solution, there is only one winding, not a few, which enables good use of the machine’s magnetic core in the same dimensions as for the three-phase machine of a similar power. Steady-state characteristics and dynamic operation were obtained using laboratory measurements of a standalone nine-phase induction generator. The automatic control system maintained the output voltage at the set level, regardless of the generator load and driving power.

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Section: Application Suggestionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Voltage Control of Multiphase Cage Induction Generators at a Speed Varying over a Wide Range

Drozdowski

Cholewa

2021

Energies

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“…Other designs enabling operation at variable speed are vector-controlled doubly fed induction generators (DFIGs) with three-phase or six-phase stator windings [13,18,19]. A broad and valuable review of various technical solutions for wind farms and their control is presented in [6,7,20].…”

Section: Introductionmentioning

confidence: 99%

Field-Oriented Control of a Nine-Phase Cage Induction Generator with Large Speed Changes and Variable Load

Cholewa,

Drozdowski

2024

Energies

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This paper presents a voltage control system for multiphase squirrel-cage induction generators operating at a high variability of speed and variable load. Field-oriented vector control was used with a change in the sequence of the stator phase currents what changes the number of poles of the magnetic field produced by nine-phase stator winding. At low speeds, the current sequence is changed so that the number of poles increases allowing for the desired voltage to be obtained with greater efficiency. The task of the automatic control system was to control the DC voltage to a desired value at the output of the multiphase PWM converter. This is an alternative control method to the scalar control of voltage and frequency presented in a previous work. The control method and parameters of the automatic control system result from the mathematical model of the multiphase induction machine. The results of the laboratory tests were compared with the effects of the operation of the same nine-phase scalar controlled generator.

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Control strategy of wide-speed-range doubly fed induction generator based on stator-winding short circuited in low speed mode

Cited by 2 publications

References 6 publications

Voltage Control of Multiphase Cage Induction Generators at a Speed Varying over a Wide Range

Voltage Control of Multiphase Cage Induction Generators at a Speed Varying over a Wide Range

Field-Oriented Control of a Nine-Phase Cage Induction Generator with Large Speed Changes and Variable Load

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