AT-NPC モジュール スイッチングパターン (3相)

AT-NPC Module Switching Pattern
(Three Phase)
Fuji Electric Co., Ltd.
Device Application Technology Dept.
Semiconductor Div.
Sales Group
Mar, 2015
MT5F28646b
© Fuji Electric Co., Ltd. All rights reserved.
1
3-phase 3-level Circuit (AT-NPC)
Vu
Vv
Vu
Vw
Vv
Vw
MT5F28646b
© Fuji Electric Co., Ltd. All rights reserved.
2
3-phase 3-level Circuit
u
E
Vuv
v
Vu
Vv
w
E
MT5F28646b
© Fuji Electric Co., Ltd. All rights reserved.
3
Output Line-to-Line Voltage
Phase
voltage
+E
Vu
0
u
-E
Phase
voltage
Vv
+E
Vuv
120o
Vu
0
-E
v
Vv
w
+2E
Line-to-line
voltage V
+E
uv 0
(= Vu – Vv)
-E
-2E
MT5F28646b
© Fuji Electric Co., Ltd. All rights reserved.
4
3-Phase Circuit with Inductive Load
Vu
Iu
Vv
Iv
Vw
Iw
MT5F28646b
Vu
Vv
VW
0
-E
0
Iu
Iv
Iw
RB-FW
-IGBT
RB-FW
© Fuji Electric Co., Ltd. All rights reserved.
5
3-Phase Circuit with Inductive Load
Vu
Iu
Vv
Iv
Vw
Iw
MT5F28646b
Vu
Vv
VW
0
-E
+E
Iu
Iv
Iw
RB-FW
-IGBT
+IGBT
© Fuji Electric Co., Ltd. All rights reserved.
6
3-Phase Circuit with Inductive Load
Vu
Iu
Vv
Iv
Vw
Iw
MT5F28646b
Vu
Vv
VW
+E
-E
+E
Iu
Iv
Iw
+FWD
-IGBT
+IGBT
© Fuji Electric Co., Ltd. All rights reserved.
7
3-Phase Circuit with Inductive Load
Vu
Iu
Vv
Iv
Vw
Iw
MT5F28646b
Vu
Vv
VW
+E
0
+E
Iu
Iv
Iw
+FWD
RB-FW
+IGBT
© Fuji Electric Co., Ltd. All rights reserved.
8
3-Phase Circuit with Inductive Load
Vu
Iu
Vv
Iv
Vw
Iw
MT5F28646b
Vu
Vv
VW
+E
-E
0
Iu
Iv
Iw
+FWD
-IGBT
RB-FW
© Fuji Electric Co., Ltd. All rights reserved.
9
3-Phase Circuit with Inductive Load
Vu
Iu
Vv
Iv
Vw
Iw
MT5F28646b
Vu
Vv
VW
0
-E
0
Iu
Iv
Iw
RB-FW
-IGBT
RB-FW
© Fuji Electric Co., Ltd. All rights reserved.
10
3-Phase Circuit with Inductive Load
Vu
Iu
Vv
Iv
Vw
Iw
MT5F28646b
Vu
Vv
VW
+E
-E
0
Iu
Iv
Iw
+FWD
-IGBT
RB-FW
© Fuji Electric Co., Ltd. All rights reserved.
11
3-Phase Circuit with Inductive Load
Vu
Iu
Vv
Iv
Vw
Iw
MT5F28646b
Vu
Vv
VW
+E
-E
0
Iu
Iv
Iw
+IGBT
-IGBT
RB-FW
© Fuji Electric Co., Ltd. All rights reserved.
12
3-Phase Circuit with Inductive Load
Vu
Iu
Vv
Iv
Vw
Iw
MT5F28646b
Vu
Vv
VW
+E
0
0
Iu
Iv
Iw
+IGBT
RB-FW
RB-FW
© Fuji Electric Co., Ltd. All rights reserved.
13
3-Phase Circuit with Inductive Load
Vu
Iu
Vv
Iv
Vw
Iw
MT5F28646b
Vu
Vv
VW
+E
-E
0
Iu
Iv
Iw
+IGBT
-IGBT
RB-FW
© Fuji Electric Co., Ltd. All rights reserved.
14
3-Phase Circuit with Inductive Load
Vu
Iu
Vv
Iv
Vw
Iw
MT5F28646b
Vu
Vv
VW
0
-E
-E
Iu
Iv
Iw
RB-FW
-IGBT
-FWD
© Fuji Electric Co., Ltd. All rights reserved.
15
3-Phase Circuit with Inductive Load
Vu
Iu
Vv
Iv
Vw
Iw
MT5F28646b
Vu
Vv
VW
+E
-E
-E
Iu
Iv
Iw
+IGBT
-IGBT
-FWD
© Fuji Electric Co., Ltd. All rights reserved.
16
3-Phase Circuit with Inductive Load
Vu
Iu
Vv
Iv
Vw
Iw
MT5F28646b
Vu
Vv
VW
+E
0
0
Iu
Iv
Iw
+IGBT
RB-FW
RB-FW
© Fuji Electric Co., Ltd. All rights reserved.
17
Switching Mode
Current
+
+
-
T: Psat
D1: Pf
↑(A) T1: Eon, T4:Err ↑(B) T3: Eoff
↓(A) T1: Eoff
↓(B) T3: Eon,D2:Err
Phase
Voltage
T4: Psat,Pf
0
T3: Psat, Pf
↑(B) T4: Eon, D2:Err ↑(A) T2: Eoff
↓(A) T2: Eon, T3:Err
↓(B) T4: Eoff
-
MT5F28646b
D2: Pf
T2: Psat
© Fuji Electric Co., Ltd. All rights reserved.
18
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