Power control of brushless doubly-fed reluctance drive and generator systems

--In this paper, a new open-winding control strategy is proposed for a brushless doubly-fed reluctance generator (BDFRG) used for standalone wind turbine or ship generators. The BDFRG is characterized with two windings on the stator: a power winding and a control winding. The control winding is fed with dual two-level three-phase converters, and a vector control scheme based on space vector pulse width modulation (SVPWM) is designed. Compared to traditional three-level inverter systems, the dc-link voltage and the voltage rating of power devices in the proposed system are reduced by 50% while still greatly improving the reliability, redundancy and fault tolerance of the proposed system by increasing the switching modes. Its performance is evaluated by simulation in MATLAB/SIMULINK, and an experimental study on a 42-kW prototype machine.Index Terms--Brushless doubly-fed reluctance generator (BDFRG), dual two-level converters, open-winding, space vector pulse width modulation (SVPWM).

show abstract

“…Among them, brushless doubly-fed reluctance generators (BDFRGs) are a promising topology owing to their robust rotor [14]- [17]. As shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Developing a New SVPWM Control Strategy for Open-Winding Brushless Doubly Fed Reluctance Generators

Zhang

Zhu

Cao

et al. 2015

IEEE Trans. on Ind. Applicat.

View full text Add to dashboard Cite

show abstract

“…Similar studies to those conducted for the BDFIG [24]- [26] or DFIG [6] have also been done on the BDFRG(M) involving: scalar control [2], [23], vector control (VC) [1], [2], [5], [23], [27]- [29], direct torque and secondary flux (λ s ) [23], [30] or primary reactive power (Q) control (DTC) [31], direct power control (DPC) [32] and variable structure control [33]. The preliminary attributes in [2], [23], [33] are intellectually interesting but have been left unproven in practice.…”

mentioning

confidence: 99%

“…However, the DTC methodologies in [23], [30] are extremely sensitive to inductance knowledge and λ s estimation inaccuracies so that poor proof of concept results for an unloaded BDFRM have just been reported. These shortcomings have been eliminated and much better response provided by replacing λ s with Q as a control variable in the improved parameter independent DT(P)C schemes [31], [32] albeit at fixed BDFRG(M) loads of no or little interest to the target applications. Although robust and relatively easy to implement in a stator frame without having to know the rotor position or speed, the hysteresis torque (power) controllers in [31], [32] suffer from usual variable switching frequencies and higher flux (torque) ripples, unlike, in this sense, the undoubtedly superior VC.…”

mentioning

confidence: 99%

“…These shortcomings have been eliminated and much better response provided by replacing λ s with Q as a control variable in the improved parameter independent DT(P)C schemes [31], [32] albeit at fixed BDFRG(M) loads of no or little interest to the target applications. Although robust and relatively easy to implement in a stator frame without having to know the rotor position or speed, the hysteresis torque (power) controllers in [31], [32] suffer from usual variable switching frequencies and higher flux (torque) ripples, unlike, in this sense, the undoubtedly superior VC. Besides, an encoder is solely required for speed regulation in [31], [32], and its use is under-utilized from this point of view compared to the VC where it additionally serves for torque control.…”

mentioning

confidence: 99%

“…Although robust and relatively easy to implement in a stator frame without having to know the rotor position or speed, the hysteresis torque (power) controllers in [31], [32] suffer from usual variable switching frequencies and higher flux (torque) ripples, unlike, in this sense, the undoubtedly superior VC. Besides, an encoder is solely required for speed regulation in [31], [32], and its use is under-utilized from this point of view compared to the VC where it additionally serves for torque control.…”

mentioning

confidence: 99%

See 2 more Smart Citations

A New Sensorless Speed Control Scheme for Doubly Fed Reluctance Generators

Ademi

Jovanović

Chaal

et al. 2016

IEEE Trans. Energy Convers.

Self Cite

View full text Add to dashboard Cite

Abstract-The paper presents the development and experimental validation of a novel angular velocity observer-based fieldoriented control algorithm for a promising low-cost brushless doubly-fed reluctance generator (BDFRG) in wind power applications. The BDFRG has been receiving increasing attention because of the use of partially-rated power electronics, the high reliability of brushless design, and competitive performance to its popular slip-ring counterpart, the doubly-fed induction generator (DFIG). The controller viability has been demonstrated on a BDFRG laboratory test facility for emulation of variable speed and loading conditions of wind turbines or pump drives.

show abstract

Direct Power Control and Space Vector Modulation‐Based Direct Power Control for Brushless Doubly‐Fed Reluctance Generator

Shi

2023

IEEJ Transactions Elec Engng

View full text Add to dashboard Cite

This paper deduces the quantitative relationship between the flux vectors and the power of power winding (PW) in brushless doubly‐fed reluctance generator (BDFRG). On this basis, the direct power control (DPC) theory of BDFRG is established, which makes up the deficiency that the DPC theory of BDFRG is only based on qualitative analysis in the existing literature. The power derivative expression is derived for accurately analyzing the effect of voltage vector of control winding (CW) on the power of PW, concluding that the control effect of DPC is related to the operation point of a BDFRG. The number of basic voltage vectors of CW connected with two‐level converter is limited, resulting that under some operation conditions, a BDFRG controlled by DPC could present a time interval where the power cannot be controlled satisfactorily. Therefore, the space vector modulation‐based direct power control (SVM‐DPC) strategy of BDFRG is proposed, which can solve the above problem and fix the switching frequency. Experimental results prove the correctness of the elaboration and the proposed method. © 2023 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

show abstract

Power control of brushless doubly-fed reluctance drive and generator systems

Cited by 48 publications

References 15 publications

Developing a New SVPWM Control Strategy for Open-Winding Brushless Doubly Fed Reluctance Generators

Developing a New SVPWM Control Strategy for Open-Winding Brushless Doubly Fed Reluctance Generators

A New Sensorless Speed Control Scheme for Doubly Fed Reluctance Generators

Direct Power Control and Space Vector Modulation‐Based Direct Power Control for Brushless Doubly‐Fed Reluctance Generator

Contact Info

Product

Resources

About