High Speed Grid Voltage Detection Method for 3 Phase Grid-Connected Inverter during Grid Faults

(1)

최형진

전원사고 시 상 계통연계 인버터의 전원 전압 고속 검출 방법3

High Speed Grid Voltage Detection Method for 3 Phase Grid-Connected Inverter during Grid Faults

논문 한국태양에너지학회 논문집

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Journal of the Korean Solar Energy Society

Vol. 29, No. 5, 2009 IS S N 1 5 9 8 - 6 4 1 1

(2)

_ _∙

 

 sin _  



__∙_

__{ }



∙









  



 

^

 

^

(3)

최형진

__  ∙_

_  



 sin cos^{cos sin}



_   __

_{ }

(4)

  _∙__{  ∙ }





__{ }

  

 

_{_ }_{ }

^ _  _^

_  _^

_

  ∙

 _

  

_

_{ }_{   }

  _

_



(5)

최형진

_{_ } 

   ∙_{ } 

 

__≅   

  

∙ ^_  _^

_  _^

_   _

__{ }

_

_

  

_^

_∙_∙ _

__

_

_

_    

_    

_

(a)

(b)

(c)

(d) 400(V)

-400(V)

4(rad)

-4(rad)

800(rad/sec)

0(rad/sec)

400(V)

-100(V)

Ea Eb Ec

0 Time(ms) 200

(6)

(b)

(c)

(d) 4(rad)

-4(rad) 800(rad/sec)

0(rad/sec) 400(V)

-400(V)

0 Time(ms) 200

_

(a)

(b)

(c)

(d) 400(V)

-400(V) 4(rad)

-4(rad) 800(rad/sec)

0(rad/sec) 400(V)

-400(V)

0 Time(ms) 200

_

(7)

최형진

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.

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(8)