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© Fuji Electric Co., Ltd. All rights reserved. 1MT5F30032a
I-NPC Module Switching Pattern(Single Phase)
Device Application Technology Dept.Semiconductor Div.
Sales Group
Fuji Electric Co., Ltd.
Mar, 2015
© Fuji Electric Co., Ltd. All rights reserved. 2MT5F30032a
What is the “three level” ?
Vout = +E Vout = 0 Vout = -E
Three level outputs!(+E, 0, -E)
ON
ONON
© Fuji Electric Co., Ltd. All rights reserved. 3MT5F30032a
NPC & T-type 3-level Configuration
(1) (3)
Vout = +E Vout = -E
© Fuji Electric Co., Ltd. All rights reserved. 4MT5F30032a
Switching Pattern
(2)
Vout = 0
or
© Fuji Electric Co., Ltd. All rights reserved. 5MT5F30032a
Generate PWM Pulse
T1
T3
T4
T2
+-
-+
Carrier wave 1
Reference wave
Carrier wave 2
© Fuji Electric Co., Ltd. All rights reserved. 6MT5F30032a
Switching Pattern (Phase Voltage)
Carrier wave 1
Carrier wave 2
Reference wave
T1
T2
T3
T4
T1
T3
T4
T2
© Fuji Electric Co., Ltd. All rights reserved. 7MT5F30032a
Switching Pattern (Phase Voltage)
Output voltage (Phase voltage)
+E
-E
After filteringVout
Vout
T1
T2
T3
T4
© Fuji Electric Co., Ltd. All rights reserved. 8MT5F30032a
T1
T2
T3
T4
Inductive Load – Lagging Current
aCurrent delay: a
Power factor: cos a
If an inductive load is connected,the current waveform is laggingbehind the voltage waveform.
T1
T3
T4
T2 Iout
Inductive load
D5
D6
D1
D2
D3
D4
© Fuji Electric Co., Ltd. All rights reserved. 9MT5F30032a
Switching Pattern
T1
T2
T3
T4
T1
T3
T4
T2 Iout
Inductive load
D5
D6
(1) (2) (3) (4)
D1
D2
D3
D4
© Fuji Electric Co., Ltd. All rights reserved. 10MT5F30032a
Loss Matrix
Voltage
+E 0 0 -E
Cu
rre
nt
+Io
Psat: T1Psat: T2
Psat: T2Pf: D5
Psat: T2Pf: D5
Pf: D3Pf: D4
-Io
Pf: D1Pf: D2
Psat: T3Pf: D6
Psat: T3Pf: D6
Psat: T3Psat: T4
(mode A): Eoff: T4
(mode A): Eon: T4Err: D6
(mode B): Eoff: T3
(mode B): Eon: T3Err: D1
(mode B): Eoff: T2
(mode B): Eon: T2Err: D4 (mode A): Eoff: T1
(mode A): Eon: T1Err: D5
(1)
(2) (3)
(4)
※ There is no Err on D2 and D3
© Fuji Electric Co., Ltd. All rights reserved. 11MT5F30032a
T1
T2
T3
T4
Switching Pattern (1) SW mode B
Vout
Iout
T2: ONT3: Turn on (Free wheeling)D6: Free wheeling
Iout
T1
T3
T4
T2
ON
ON
OFF
OFF
(1)
D5
D6
© Fuji Electric Co., Ltd. All rights reserved. 12MT5F30032a
T1
T2
T3
T4
Switching Pattern (1) SW mode B
Vout
Iout
Iout
T1
T3
T4
T2
OFF
ON
OFF
ON
(1)
D5
D6
D1: Free wheelingD2: Free wheelingT3: Turn OFF
© Fuji Electric Co., Ltd. All rights reserved. 13MT5F30032a
T1
T2
T3
T4
Switching Pattern (1) SW mode B
Vout
Iout
Iout
T1
T3
T4
T2
ON
ON
OFF
OFF
(1)
D5
D6
D1: Reverse recoveryT3: Turn ON
© Fuji Electric Co., Ltd. All rights reserved. 14MT5F30032a
T1
T2
T3
T4
Switching Pattern (1) SW mode B
Vout
Iout
Iout
T1
T3
T4
T2
OFF
ON
OFF
ON
(1)
D5
D6
D1: Free wheelingD2: Free wheelingT3: Turn OFF
© Fuji Electric Co., Ltd. All rights reserved. 15MT5F30032a
T1
T2
T3
T4
Switching Pattern (2) SW mode A
Vout
Iout
Iout
T1
T3
T4
T2
OFF
ON
OFF
ON
(2)
D5
D6
T1: ONT2: ON
© Fuji Electric Co., Ltd. All rights reserved. 16MT5F30032a
Switching Pattern (2) SW mode A
T1
T2
T3
T4
Vout
Iout
Iout
T1
T3
T4
T2
ON
ON
OFF
OFF
(2)
D5
D6
T1: Turn OFFT2: OND5: Turn ON
© Fuji Electric Co., Ltd. All rights reserved. 17MT5F30032a
T1
T2
T3
T4
Switching Pattern (2) SW mode A
Vout
Iout
Iout
T1
T3
T4
T2
OFF
ON
OFF
ON
(2)
D5
D6
T1: Turn ONT2: OND5: Reverse recovery
© Fuji Electric Co., Ltd. All rights reserved. 18MT5F30032a
T1
T2
T3
T4
Switching Pattern (2) SW mode A
Vout
Iout
Iout
T1
T3
T4
T2
ON
ON
OFF
OFF
(2)
D5
D6
T1: Turn OFFT2: OND5: Free wheeling
© Fuji Electric Co., Ltd. All rights reserved. 19MT5F30032a
T1
T2
T3
T4
Switching Pattern (2) SW mode A
Vout
Iout
Iout
T1
T3
T4
T2
OFF
ON
OFF
ON
(2)
D5
D6
T1: Turn ONT2: OND5: Reverse recovery
© Fuji Electric Co., Ltd. All rights reserved. 20MT5F30032a
T1
T2
T3
T4
Switching Pattern (2) SW mode A
Vout
Iout
Iout
T1
T3
T4
T2
ON
ON
OFF
OFF
(2)
D5
D6
T1: Turn OFFT2: OND5: Free wheeling
© Fuji Electric Co., Ltd. All rights reserved. 21MT5F30032a
T1
T2
T3
T4
Switching Pattern (2) SW mode A
Vout
Iout
Iout
T1
T3
T4
T2
OFF
ON
OFF
ON
(2)
D5
D6
T1: Turn ONT2: OND5: Reverse recovery
© Fuji Electric Co., Ltd. All rights reserved. 22MT5F30032a
T1
T2
T3
T4
Switching Pattern (2) SW mode A
Vout
Iout
Iout
T1
T3
T4
T2
ON
ON
OFF
OFF
(2)
D5
D6
T1: Turn OFFT2: OND5: Free wheeling
© Fuji Electric Co., Ltd. All rights reserved. 23MT5F30032a
T1
T2
T3
T4
Switching Pattern (3) SW mode B’
Vout
Iout
(3)
Iout
T1
T3
T4
T2
ON
ON
OFF
OFF
D5
D6
T2: OND5: Free wheeling
© Fuji Electric Co., Ltd. All rights reserved. 24MT5F30032a
T1
T2
T3
T4
Switching Pattern (3) SW mode B’
Vout
Iout
Iout
T1
T3
T4
T2
ON
OFF
ON
OFF
(3)
D5
D6
T2: Turn OFFD3: Free wheelingD4: Free wheeling
© Fuji Electric Co., Ltd. All rights reserved. 25MT5F30032a
T1
T2
T3
T4
Switching Pattern (3) SW mode B’
Vout
Iout
Iout
T1
T3
T4
T2
ON
ON
OFF
OFF
(3)
D5
D6
T2: Turn OND4: Reverse recoveryD5: Free wheeling
© Fuji Electric Co., Ltd. All rights reserved. 26MT5F30032a
T1
T2
T3
T4
Switching Pattern (3) SW mode B’
Vout
Iout
Iout
T1
T3
T4
T2
ON
OFF
ON
OFF
(3)
D5
D6
T2: Turn OFFD3: Free wheelingD4: Free wheeling
© Fuji Electric Co., Ltd. All rights reserved. 27MT5F30032a
T1
T2
T3
T4
Switching Pattern (4) SW mode A’
Vout
Iout
Iout
T1
T3
T4
T2
ON
OFF
ON
OFF
(4)
D5
D6
T3: ONT4: ON
© Fuji Electric Co., Ltd. All rights reserved. 28MT5F30032a
T1
T2
T3
T4
Switching Pattern (4) SW mode A’
Vout
Iout
Iout
T1
T3
T4
T2
ON
ON
OFF
OFF
(4)
D5
D6
T3: ONT4: Turn OFFT6: Free wheeling
© Fuji Electric Co., Ltd. All rights reserved. 29MT5F30032a
T1
T2
T3
T4
Switching Pattern (4) SW mode A’
Vout
Iout
Iout
T1
T3
T4
T2
ON
OFF
ON
OFF
(4)
D5
D6
T3: ONT4: Turn OND6: Reverse recovery
© Fuji Electric Co., Ltd. All rights reserved. 30MT5F30032a
T1
T2
T3
T4
Switching Pattern (4) SW mode A’
Vout
Iout
Iout
T1
T3
T4
T2
ON
ON
OFF
OFF
(4)
D5
D6
T3: ONT4: Turn OFFT6: Free wheeling
© Fuji Electric Co., Ltd. All rights reserved. 31MT5F30032a
T1
T2
T3
T4
Switching Pattern (4) SW mode A’
Vout
Iout
Iout
T1
T3
T4
T2
ON
OFF
ON
OFF
(4)
D5
D6
T3: ONT4: Turn OND6: Reverse recovery
© Fuji Electric Co., Ltd. All rights reserved. 32MT5F30032a
T1
T2
T3
T4
Switching Pattern (4) SW mode A’
Vout
Iout
Iout
T1
T3
T4
T2
ON
ON
OFF
OFF
(4)
D5
D6
T3: ONT4: Turn OFFT6: Free wheeling
© Fuji Electric Co., Ltd. All rights reserved. 33MT5F30032a
T1
T2
T3
T4
Switching Pattern (4) SW mode A’
Vout
Iout
Iout
T1
T3
T4
T2
ON
OFF
ON
OFF
(4)
D5
D6
T3: ONT4: Turn OND6: Reverse recovery
© Fuji Electric Co., Ltd. All rights reserved. 34MT5F30032a
T1
T2
T3
T4
Switching Pattern (4) SW mode A’
Vout
Iout
Iout
T1
T3
T4
T2
ON
ON
OFF
OFF
(4)
D5
D6
T3: ONT4: Turn OFFT6: Free wheeling