Derivation of a vector model for a Brushless Doubly-Fed Machine with multiple loops per nest

2008 34th Annual Conference of IEEE Industrial Electronics

Oraee

Abdi

et al. 2008

The paper presents the vector model of the Brushless Doubly-Fed Machine (BDFM) in the rotor flux oriented reference frame. The rotor flux oriented reference frame is well known in the standard AC machines analysis and control. Similar benefits can be sought by employing this method for the BDFM. The vector model is implemented in MATLAB/SIMULINK to simulate the BDFM dynamic performance under different operating conditions. The predictions from the vector model are compared to those from the coupled circuit model in simulation. The results are shown for the cascade mode of operation.

Section: Generic Vector Model Of the Prototype Bdfmmentioning

confidence: 99%

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confidence: 99%

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The Brushless Doubly-Fed Machine Vector Model in the rotor flux oriented reference frame

2008 34th Annual Conference of IEEE Industrial Electronics

Oraee

Abdi

et al. 2008

“…In [15,16], the authors presented a vector model for the prototype 4/8 pole BDFM whose four-pole winding is considered as the Power Winding (PW) and eight-pole winding as the Control Winding (CW). The presented vector model in [15,16] which considers the effects of all loops in each nest is the basis for analyzing the proposed vector control structure in this paper.…”

mentioning

confidence: 99%

“…The presented vector model in [15,16] which considers the effects of all loops in each nest is the basis for analyzing the proposed vector control structure in this paper. This structure is based on the synchronous operation of the BDFM which is the desired operating mode of the machine.…”

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confidence: 99%

Synchronous operation control of the Brushless Doubly-Fed Machine

2010 IEEE International Symposium on Industrial Electronics

Shao

Abdi

et al. 2010

Self Cite

The paper presents a novel vector control structure for the Brushless Doubly-Fed Machine (BDFM) which is derived based on the machine synchronous operation. In fact, the synchronous operation of the BDFM provides an efficient approach for determining the required reference angle in the machine vector control structure. The utilization of such reference angle makes the vector control structure presented in this paper different from and, in fact, more effective than the existing rotor flux and stator flux orientation schemes proposed for the machine. The results of implementing the vector control scheme in simulations confirm the effectiveness of the proposed approach for the BDFM control. NOMENCLATURE 2 1 , s s R R phase resistances of stator1 and stator2 windings o m i R R R , , rotor inner, middle and outer loops resistances 2 1 , ls ls L L leakage inductances of stator1 and stator2 windings 2 1 , s s L L self inductances of stator1 and stator2 windings lo lm li L L L , , rotor inner, middle and outer loops leakage inductances o m i L L L , , rotor inner, middle and outer loops self inductances io mo im L L L , , mutual inductances between loops of a rotor nest oo mm ii M M M , , mutual inductances between identical loops of two nests io mo im M M M , , mutual inductances between non-identical loops of two nests o m i r s r s r s M M M 1 1 1 , , mutual inductances between stator1 phase winding and inner, middle and outer loops o m i r s r s r s M M M 2 2 2 , , mutual inductances between stator2 phase winding and inner, middle and outer loops B J , rotor moment of inertia and friction coefficient p dt d operator 2 1 , P P pole pairs of stator1 and stator2 windings r s s ϕ θ θ , , 2 1 arbitrary functions of time in stator1, stator2 and rotor transformations r s s ' , , 2 1 ϕ ω ω time-derivatives of r s s ϕ θ θ , , 2 1 1 1 1 , , s s s I V λ stator1 voltage, current and flux in the vector model 2 2 2 , , s s s I V λ stator2 voltage, current and flux in the vector model r r r I V λ , , rotor voltage, current and flux in the vector model { } real real and imaginary parts of a complex number * z complex conjugate of z t transpose of a matrix or vector

Vector model utilization for nested-loop rotor Brushless Doubly-Fed Machine analysis, control and simulation

2010 1st Power Electronic &Amp; Drive Systems &Amp; Technologies Conference (PEDSTC)

Oraee

2010

Self Cite

This paper presents different applications of a vector model developed by the authors in Brushless Doubly-Fed Machine (BDFM) studies including analysis, control and simulations. The BDFM considered consists of a nested-loop type rotor. The vector model, which considers all the loops in each rotor nest, is derived using BDFM coupled-circuit model equations and by applying appropriate vector transformations. Three vector transformations are employed for the derivation of vector model corresponding to two three-phase windings in the stator and the rotor circuit. Each transformation consists of an angle which is, in general, unspecified and must be assigned appropriately depending on the application of vector model. The paper demonstrates proper assignments of the transformation angles for BDFM operation analysis, control synthesis and simulations.