Flying‐start and continuous operation of a permanent‐magnet wind generator based on discontinuous currents, discrete second‐order sliding‐mode observer and phase‐locked loop

Jukic, Filip; Pravica, Luka; Barisa, Tin; Sumina, Damir

doi:10.1049/iet-rpg.2019.0461

Cited by 13 publications

(4 citation statements)

References 37 publications

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“…In the past decades, wind power generation systems have played an important role in renewable power generation, due to their cleanliness and renewability [1][2][3][4]. Dual three-phase permanent magnet synchronous generator (DTP-PMSG) has been used as direct drive wind power generator increasingly for its numerous advantages compared with the conventional three-phase PMSG, such as higher reliability, lower power rating per phase and higher power density [5,6].…”

Section: Introductionmentioning

confidence: 99%

Deadbeat direct power control for dual three‐phase PMSG used in wind turbines

Jin

Zhao

et al. 2021

IET Renewable Power Gen

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The classical switching-table-based direct power control usually employs one active voltage vector during the whole sample period, which will bring distinct current harmonics and large power ripple. This paper proposes an improved deadbeat direct power control for a dual three-phase permanent magnet synchronous generator. The deadbeat control of both active power and reactive power is employed to calculate the duty cycle of the active vector. By this way, the active and reactive power can follow the references as much as possible during each sample period. Then a weight coefficient is introduced and its effects on the steady-state performances of active and reactive power are analysed. With this proposed method, the current harmonics and power ripple are suppressed considerably. Meanwhile, the simple structure and fast dynamic response are preserved. The experimental results validate the effectiveness of the proposed strategy. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Introductionmentioning

confidence: 99%

Deadbeat direct power control for dual three‐phase PMSG used in wind turbines

Jin

Zhao

et al. 2021

IET Renewable Power Gen

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“…The number of repetitions is selected through the average value and differences of the speed estimated by the repetitive ZVV pulses. In [22, 23], the rotor position and speed are calculated by applying a flux open‐loop observer and a second‐order sliding‐mode observer, respectively. In this way, the estimation structure in the start‐up process is the same as that in normal sensorless control.…”

Section: Introductionmentioning

confidence: 99%

Restart strategy for sensorless PMSM drive system based on zero‐voltage vector

Bao

Shen

et al. 2020

IET Electric Power Applications

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The zero‐voltage vector (ZVV) method is widely employed to restart a free‐running permanent magnet synchronous machine (PMSM) stably in a sensorless drive system due to its simple implementation. However, in the conventional method, it is hard to determine the action time and interval time of ZVV pulses, which may result in overcurrent. Moreover, the estimation accuracy is susceptible to current measurement noise. To cope with these problems, an enhanced ZVV method based on two feedback loops is proposed. With the proposed strategy, an inner closed loop is constructed to regulate the action time of the ZVV pulse by keeping the current amplitude at the reference value, which prevents the overcurrent. Meanwhile, the reference value of the current amplitude is adjusted automatically based on the outer loop to determine a suitable interval time of the ZVV pulse. Furthermore, the phase‐locked loop technique is exploited to extract rotor speed and position. The feasibility of the proposed method is verified under simulation and experimental results with a 5.5 kW sensorless PMSM drive system.

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“…The proposed method is also used for achieving smooth on-thefly start during short time power supply interruptions. Since the motor terminal voltages are continuously monitored by a sensorless vector control algorithm, a smooth on-the-fly start is performed without resorting to other complex methods based on signal injection and zero voltage pulse [29][30][31]. In this paper, in addition to the work presented in [27], a comparison of dynamics of the direct transition method and the proposed method during a changeover is performed using simulation.…”

Section: Introductionmentioning

confidence: 99%

Quick and seamless transition method for I‐f to sensorless vector control changeover and on‐the‐fly start of PMSM drives

Nair

Hatua

Prasad

et al. 2020

IET Electric Power Applications

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A smooth changeover from the I‐f method to closed‐loop sensorless vector control is a critical requirement for permanent magnet synchronous motor (PMSM) drives using a back‐emf based sensorless algorithm for medium‐ to high‐speed range control. The existing methods provide a smooth transition by aligning the angle generated by I‐f control to the sensorless estimated angle. However, the overall start‐up time increases due to the additional transition interval, which limits the usability of these methods for applications requiring a quick start‐up. Furthermore, the use of a direct transition method to reduce the changeover time results in speed and current oscillation if the estimated position using sensorless algorithm is having an error. In the proposed method, the inverter pulses are disabled for a short duration and the machine back‐emf is measured after the stator current falls to zero. Therefore, a quick and seamless transition is achieved in the proposed method by accurately estimating the rotor position from the sensed back‐emf. The proposed method is also extended to perform on‐the‐fly start for power failure ride through during short time power supply interruption. The performance of the proposed method is verified using simulation and experiment on a 25 kW PMSM drive.

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Flying‐start and continuous operation of a permanent‐magnet wind generator based on discontinuous currents, discrete second‐order sliding‐mode observer and phase‐locked loop

Cited by 13 publications

References 37 publications

Deadbeat direct power control for dual three‐phase PMSG used in wind turbines

Deadbeat direct power control for dual three‐phase PMSG used in wind turbines

Restart strategy for sensorless PMSM drive system based on zero‐voltage vector

Quick and seamless transition method for I‐f to sensorless vector control changeover and on‐the‐fly start of PMSM drives

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