[其它]The excitation control of a 12/3 phase dual stator-winding induction generator.pdf

Abstract—This paper presents a novel stand-alone dual 0M p>X  
stator-winding induction generator (DWIG) on the basis of the G$b4`wt  
new idea of electric power integration. The 2000KW/6521RPM ~MX@-Ff  
generator and its controller are to be designed. The experimental cjk5><}`H7  
1:100 experimental prototype generator and its controller were Lif mYn[  
designed in 2003 and many experiments were done also. This Kkm7L-  
generator has two sets of stator-windings. One, referred to as the .wywO|  
12-phase power winding, is connected with four 3-phase full kcb'`<B  
bridge rectifiers to this 12–phase winding to supply a high-quality (ym)q#^  
DC power. The other is a 3-phase winding. A typical two-level 5I14"Qf  
PWM voltage source inverter is connected to this winding and the &knnWm"  
PWM inverter generates reactive current to the generator. It is  jQhf)B  
equivalent to a static VAR generator (SVG), and it is called a =Ao;[j)*!  
static excitation regular (SER). The excitation control theme is ~A)$="  
discussed in detail, and it is combined with the fixed capacitors $O#h4
L_  
and a SER. The fixed capacitors are wye-connection to the power ~+F: QrXcI  
winding. When no load or small load, the capacitors can supply E:ytdaiT  
some excitation current and the generator could supply DC power. ;&!l2UB%  
The control object of the SER is to maintain the DC output of the 2%
I:s6r  
power winding constant. The paper presents a control T>?~eYHXs  
methodology based on 3-phase stator voltage-oriented (SVO) to ?#'
qY6 ^  
regulate the DC voltage. Theoretical deductions are presented in BI s!  
order to validate the proposed control algorithm. Experimental C+Z"0\{o  
and simulation results are also proposed and the output DC \ gN) GR  
voltage could maintain constant in spite of the variation of the b#M<b.R)  
prime mover speed and the load. These result .. h$!qb'|  
/D q]=P  

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