[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 fX}dQN~z  
stator-winding induction generator (DWIG) on the basis of the 4n/CSAT1  
new idea of electric power integration. The 2000KW/6521RPM yOE N*^6  
generator and its controller are to be designed. The experimental M][Zu[\*  
1:100 experimental prototype generator and its controller were ;xjw'%n,  
designed in 2003 and many experiments were done also. This *7K)J8kq  
generator has two sets of stator-windings. One, referred to as the nACKSsWqI  
12-phase power winding, is connected with four 3-phase full H~~>ut6`  
bridge rectifiers to this 12–phase winding to supply a high-quality 3/*<i  
DC power. The other is a 3-phase winding. A typical two-level @^^,VgW[  
PWM voltage source inverter is connected to this winding and the zN>tSdNkI-  
PWM inverter generates reactive current to the generator. It is Df0m  
equivalent to a static VAR generator (SVG), and it is called a v}&J*}_XZ  
static excitation regular (SER). The excitation control theme is MJG)fFl]O  
discussed in detail, and it is combined with the fixed capacitors ^spASG-o  
and a SER. The fixed capacitors are wye-connection to the power leO..M  
winding. When no load or small load, the capacitors can supply Q9sxI}D )R  
some excitation current and the generator could supply DC power. 9P#<T7
  
The control object of the SER is to maintain the DC output of the @mu=7_$U  
power winding constant. The paper presents a control ,{s
CI
/  
methodology based on 3-phase stator voltage-oriented (SVO) to tkf^sGgNO  
regulate the DC voltage. Theoretical deductions are presented in RhI>Ak;-  
order to validate the proposed control algorithm. Experimental hlBqcOpkKg  
and simulation results are also proposed and the output DC FoGSCg%  
voltage could maintain constant in spite of the variation of the 5+Hw @CY3  
prime mover speed and the load. These result .. Cm[^+.=I  
RyZy2^0<  

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