Chapter 1 Power Electronic Systems Power Electronic Systems
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Page 1
Chapter 1 Power Electronic Systems Power Electronic Systems
© Copyright Ned Mohan 2008 1
First Course on
Power Electronics
Module 1: Introduction
Reference Textbook:
First Course on Power Electronics by Ned Mohan,
www.mnpere.com
By
Ned Mohan
Professor of ECE
University of Minnesota
First Course on
Power Electronics
Module 1: Introduction
Reference Textbook:
First Course on Power Electronics by Ned Mohan,
www.mnpere.com
By
Ned Mohan
Professor of ECE
University of Minnesota
Page 2
© Copyright Ned Mohan 2008 2
Chapter 1 Power Electronics: An Enabling Technology
1-1 Introduction to Power Electronics
1-2 Applications and the Role of Power Electronics
1-3 Energy and the Environment
1-4 Need for High Efficiency and High Power Density
1-5 Structure of Power Electronics Interface
1-6 Voltage-Link Structure
1-7 Recent and Potential Advancements
References
Problems
Module 1: Introduction to Power
Electronics
Chapter 1 Power Electronics: An Enabling Technology
1-1 Introduction to Power Electronics
1-2 Applications and the Role of Power Electronics
1-3 Energy and the Environment
1-4 Need for High Efficiency and High Power Density
1-5 Structure of Power Electronics Interface
1-6 Voltage-Link Structure
1-7 Recent and Potential Advancements
References
Problems
Module 1: Introduction to Power
Electronics
Page 3
© Copyright Ned Mohan 2008 3
Role of Power Electronics
Figure 1-1 Power electronics interface between the source and the load.
Converter
Controller
Source Load
Power Electronics
Interface
The power electronics interface facilitates the transfer of power from the source to the
load by converting voltages and currents from one form to another, in which it is possible
for the source and load to reverse roles. The controller shown in Fig. 1-1 allows
management of the power transfer process in which the conversion of voltages and
currents should be achieved with as high energy-efficiency and high power density as
possible.
Role of Power Electronics
Figure 1-1 Power electronics interface between the source and the load.
Converter
Controller
Source Load
Power Electronics
Interface
The power electronics interface facilitates the transfer of power from the source to the
load by converting voltages and currents from one form to another, in which it is possible
for the source and load to reverse roles. The controller shown in Fig. 1-1 allows
management of the power transfer process in which the conversion of voltages and
currents should be achieved with as high energy-efficiency and high power density as
possible.
Page 4
© Copyright Ned Mohan 2008 4
Powering the Information Technology
Figure 1-2 Regulated low-voltage dc power supplies.
Power
Converter
Controller
oV
,o refV
inV Utility
24 V (dc) 5 V (dc)
3.3 V (dc)
0.5 V (dc)
(a) (b)
Powering the Information Technology
Figure 1-2 Regulated low-voltage dc power supplies.
Power
Converter
Controller
oV
,o refV
inV Utility
24 V (dc) 5 V (dc)
3.3 V (dc)
0.5 V (dc)
(a) (b)
Page 5
© Copyright Ned Mohan 2008 5
Boost Converter
Figure 1-3 Boost dc-dc converter needed in cell operated equipment.
Battery
Cell (1.5 V) 9 V (dc)
Boost Converter
Figure 1-3 Boost dc-dc converter needed in cell operated equipment.
Battery
Cell (1.5 V) 9 V (dc)
Page 6
© Copyright Ned Mohan 2008 6
Adjustable Speed Drives
Figure 1-4 Block diagram of adjustable speed drives.
Power
Processing
Unit (PPU)fixed
form
measured
speed/ position
speed /
position
Motor
Electric
Drive
Load
input command
(speed / position)
Power
Signal
adjustable
form
Electric Source
(utility)
Sensors
Controller
Adjustable Speed Drives
Figure 1-4 Block diagram of adjustable speed drives.
Power
Processing
Unit (PPU)fixed
form
measured
speed/ position
speed /
position
Motor
Electric
Drive
Load
input command
(speed / position)
Power
Signal
adjustable
form
Electric Source
(utility)
Sensors
Controller
Page 7
© Copyright Ned Mohan 2008 7
Induction Heating
Figure 1-5 Power electronics interface required for induction heating.
High
Frequency
AC
Power
Electronics
Interface
Utility
Induction Heating
Figure 1-5 Power electronics interface required for induction heating.
High
Frequency
AC
Power
Electronics
Interface
Utility
Page 8
© Copyright Ned Mohan 2008 8
Electric Welding
Figure 1-6 Power electronics interface required for electric welding.
DCPower
Electronics
Interface
Utility
Electric Welding
Figure 1-6 Power electronics interface required for electric welding.
DCPower
Electronics
Interface
Utility
Page 9
© Copyright Ned Mohan 2008 9
Energy and the Environment: The Percentage
Energy Consumption
Figure 1-7 Percentage use of electricity in various sectors in the U.S.
Motors 51%HVAC 16%
IT
14%
Lighting 19%
Energy and the Environment: The Percentage
Energy Consumption
Figure 1-7 Percentage use of electricity in various sectors in the U.S.
Motors 51%HVAC 16%
IT
14%
Lighting 19%
Page 10
© Copyright Ned Mohan 2008 10
Figure 1-8 Role of adjustable speed drives in pump-driven systems.
Adjustable
Speed Drive
(ASD)
Inlet
Outlet
Pump
utility
Role of adjustable speed drives in
pump-driven systems
Figure 1-8 Role of adjustable speed drives in pump-driven systems.
Adjustable
Speed Drive
(ASD)
Inlet
Outlet
Pump
utility
Role of adjustable speed drives in
pump-driven systems
Page 11
© Copyright Ned Mohan 2008 11
Compact Fluorescent Lamps
Figure 1-9 Power electronics interface required for CFL.
CFLPower
Electronics
Interface
Utility
Compact Fluorescent Lamps
Figure 1-9 Power electronics interface required for CFL.
CFLPower
Electronics
Interface
Utility
Page 12
© Copyright Ned Mohan 2008 12
• Hybrid electric vehicles with much higher gas mileage
• light rail, fly-by-wire planes
• all-electric ships
• drive-by-wire automobiles.
Transportation
Figure 1-10 Hybrid electric vehicles with much higher gas mileage.
• Hybrid electric vehicles with much higher gas mileage
• light rail, fly-by-wire planes
• all-electric ships
• drive-by-wire automobiles.
Transportation
Figure 1-10 Hybrid electric vehicles with much higher gas mileage.
Page 13
© Copyright Ned Mohan 2008 13
Renewable Energy
Photovoltaic Systems
Figure 1-11 Photovoltaic Systems.
(a)
Power
Electronics
Interface
Utility
DC Input
(b)
Renewable Energy
Photovoltaic Systems
Figure 1-11 Photovoltaic Systems.
(a)
Power
Electronics
Interface
Utility
DC Input
(b)
Page 14
© Copyright Ned Mohan 2008 14
Wind-Electric Systems
Figure 1-12 Wind-electric systems.
Utility
Generator
and
Power Electronics
Wind-Electric Systems
Figure 1-12 Wind-electric systems.
Utility
Generator
and
Power Electronics
Page 15
© Copyright Ned Mohan 2008 15
Uninterruptible Power Supplies
Figure 1-13 Uninterruptible power supply (UPS) system.
Utility Critical
Load
Uninterruptible
Power Supply
Uninterruptible Power Supplies
Figure 1-13 Uninterruptible power supply (UPS) system.
Utility Critical
Load
Uninterruptible
Power Supply
Page 16
© Copyright Ned Mohan 2008 16
Applications in Power
Systems
Applications in Power
Systems
Page 17
© Copyright Ned Mohan 2008 17
Strategic Space and Defense Applications
Electric WarshipMore Electric Aircraft
Source: James Soeder, NASA and Terry Ericsen, ONR.
Strategic Space and Defense Applications
Electric WarshipMore Electric Aircraft
Source: James Soeder, NASA and Terry Ericsen, ONR.
Page 18
© Copyright Ned Mohan 2008 18
NEED FOR HIGH EFFICIENCY AND
HIGH POWER DENSITY
o
o loss
P
P P
η = + 1o lossP P
η
η= −
Figure 1-14 Power output capability as a function of efficiency.
inP oP
lossP
( )a
Power
Electronics
Equipment
0.8 0.82 0.84 0.86 0.88 0.9 0.92 0.94 0.96
0
50
100
150
200
250
300
350
400
450
500
Efficiency
P
o
w
e
r
R
a
t
i
n
g
( )b
oP
20lossP W=
10lossP W=
η
P
o
w
e
r
R
a
t
i
n
g
NEED FOR HIGH EFFICIENCY AND
HIGH POWER DENSITY
o
o loss
P
P P
η = + 1o lossP P
η
η= −
Figure 1-14 Power output capability as a function of efficiency.
inP oP
lossP
( )a
Power
Electronics
Equipment
0.8 0.82 0.84 0.86 0.88 0.9 0.92 0.94 0.96
0
50
100
150
200
250
300
350
400
450
500
Efficiency
P
o
w
e
r
R
a
t
i
n
g
( )b
oP
20lossP W=
10lossP W=
η
P
o
w
e
r
R
a
t
i
n
g
Page 19
© Copyright Ned Mohan 2008 19
Summarizing the Role of Power Electronics
Output to Load
- Adjustable DC
- Sinusoidal AC
- High-frequency AC
utility
Power
Electronics
Interface
Figure 1-15 Block diagram of power electronic interface.
Summarizing the Role of Power Electronics
Output to Load
- Adjustable DC
- Sinusoidal AC
- High-frequency AC
utility
Power
Electronics
Interface
Figure 1-15 Block diagram of power electronic interface.
Page 20
© Copyright Ned Mohan 2008 20
STRUCTURE OF POWER ELECTRONICS INTERFACE
Voltage-link structure of power electronics interface
• Unipolar voltage handling transistors used
• Decoupling of two converters
• Immunity from momentary power interruptions
Figure 1-16 Voltage-link structure of power electronics interface.
conv1 conv2
controller
utility Load
STRUCTURE OF POWER ELECTRONICS INTERFACE
Voltage-link structure of power electronics interface
• Unipolar voltage handling transistors used
• Decoupling of two converters
• Immunity from momentary power interruptions
Figure 1-16 Voltage-link structure of power electronics interface.
conv1 conv2
controller
utility Load
Page 21
© Copyright Ned Mohan 2008 21
• Current-Link Systems
• Matrix Converters
• Current-Link Systems
• Matrix Converters
Page 22
© Copyright Ned Mohan 2008 22
Figure 1-17 Current-link structure of power electronics interface.
AC1 AC2
Current-Link Systems
Figure 1-17 Current-link structure of power electronics interface.
AC1 AC2
Current-Link Systems
Page 23
© Copyright Ned Mohan 2008 23
Figure 1-18 Matrix converter structure of power electronics interface [13].
vCvBvA
vc
vb
va
ia
daA
dbA
dcA
daB daC
dbB dbC
dcB dcC
Matrix Converters
Figure 1-18 Matrix converter structure of power electronics interface [13].
vCvBvA
vc
vb
va
ia
daA
dbA
dcA
daB daC
dbB dbC
dcB dcC
Matrix Converters
Page 24
© Copyright Ned Mohan 2008 24
Figure 1-19 Load-side converter in a voltage-source structure.
conv1 conv2
controller
utility Load
Voltage-link System
Figure 1-19 Load-side converter in a voltage-source structure.
conv1 conv2
controller
utility Load
Voltage-link System
Page 25
© Copyright Ned Mohan 2008 25
SWITCH-MODE LOAD-SIDE CONVERTER
• Group 1 Adjustable dc or a low-frequency sinusoidal ac output in
- dc and ac motor drives
- uninterruptible power supplies
- regulated dc power supplies without electrical isolation
• Group 2 High-frequency ac in
- compact fluorescent lamps
- induction heating
- regulated dc power supplies where the dc output voltage needs to be
electrically isolated from the input, and the load-side converter
internally produces high-frequency ac, which is passed through a
high-frequency transformer and then rectified into dc.
SWITCH-MODE LOAD-SIDE CONVERTER
• Group 1 Adjustable dc or a low-frequency sinusoidal ac output in
- dc and ac motor drives
- uninterruptible power supplies
- regulated dc power supplies without electrical isolation
• Group 2 High-frequency ac in
- compact fluorescent lamps
- induction heating
- regulated dc power supplies where the dc output voltage needs to be
electrically isolated from the input, and the load-side converter
internally produces high-frequency ac, which is passed through a
high-frequency transformer and then rectified into dc.
Page 26
© Copyright Ned Mohan 2008 26
Switch-Mode Conversion: Switching Power-Pole
as the Building Block
Figure 1-20 Switching power-pole as the building block in converters.
(b)
Av
0
t
inV
+
-
(a)
+
-
Av
A
q
inVAv
0
1Aq =
Switch-Mode Conversion: Switching Power-Pole
as the Building Block
Figure 1-20 Switching power-pole as the building block in converters.
(b)
Av
0
t
inV
+
-
(a)
+
-
Av
A
q
inVAv
0
1Aq =
Page 27
© Copyright Ned Mohan 2008 27
Pulse-Width Modulation (PWM) of the Switching Power-Pole
up
A in A in
s
T
v V d V
T
= = 0 1Ad≤ ≤
( / )A up sd T T=
Figure 1-21 PWM of the switching power-pole.
(a) (b)
Av
inV
+
-
+
-
Ai
1or0Aq =
A sd T
dAi
upT
sT
Aq
Av
0
0
t
t
1
inV
Av
Ad
Pulse-Width Modulation (PWM) of the Switching Power-Pole
up
A in A in
s
T
v V d V
T
= = 0 1Ad≤ ≤
( / )A up sd T T=
Figure 1-21 PWM of the switching power-pole.
(a) (b)
Av
inV
+
-
+
-
Ai
1or0Aq =
A sd T
dAi
upT
sT
Aq
Av
0
0
t
t
1
inV
Av
Ad
Page 28
© Copyright Ned Mohan 2008 28
Switching Power-Pole in a Buck DC-DC Converter:
An Example
o A A inV v d V= = 0 o inV V≤ ≤
Figure 1-22 Switching power-pole in a Buck converter.
inV
+
−
A
q
+
−
Av
+
−
oV
ini
Li
A sd T
sT
Aq
Av
Li
ini
0
0
0
0
t
inV
t
t
t
1
(a)
(b)
Av
Switching Power-Pole in a Buck DC-DC Converter:
An Example
o A A inV v d V= = 0 o inV V≤ ≤
Figure 1-22 Switching power-pole in a Buck converter.
inV
+
−
A
q
+
−
Av
+
−
oV
ini
Li
A sd T
sT
Aq
Av
Li
ini
0
0
0
0
t
inV
t
t
t
1
(a)
(b)
Av
Page 29
© Copyright Ned Mohan 2008 29
Figure 1-23 Waveforms in the converter of Example 1-2.
Aq
Av
20inV V=
12oV V=
0
1
3 sμ
5 sμ
t
t
0
Example 1-2 In the converter of Fig. 1-22a, the input voltage 20inV V= . The
output voltage 12oV V= . Calculate the duty-ratio Ad and the pulse
width upT , if the switching frequency 200sf kHz= .
Solution 12A ov V V= = . Using Eq. 1-4, 12 0.620
o
A
in
V
d
V
= = = and 1 5s
s
T s
f
μ= = .
Therefore, as shown in Fig. 1-23, 0.6 5 3up A sT d T s sμ μ= = × = .
Figure 1-23 Waveforms in the converter of Example 1-2.
Aq
Av
20inV V=
12oV V=
0
1
3 sμ
5 sμ
t
t
0
Example 1-2 In the converter of Fig. 1-22a, the input voltage 20inV V= . The
output voltage 12oV V= . Calculate the duty-ratio Ad and the pulse
width upT , if the switching frequency 200sf kHz= .
Solution 12A ov V V= = . Using Eq. 1-4, 12 0.620
o
A
in
V
d
V
= = = and 1 5s
s
T s
f
μ= = .
Therefore, as shown in Fig. 1-23, 0.6 5 3up A sT d T s sμ μ= = × = .
Page 30
© Copyright Ned Mohan 2008 30
Simulations using
PSpice
SwitchingWaveform.Sch
Simulations using
PSpice
SwitchingWaveform.Sch
Page 31
© Copyright Ned Mohan 2008 31
Simulation Results
Time
450us 460us 470us 480us 490us 500us
V(vA) V(vo)
0V
2.0V
4.0V
6.0V
8.0V
Av
o ov V
Simulation Results
Time
450us 460us 470us 480us 490us 500us
V(vA) V(vo)
0V
2.0V
4.0V
6.0V
8.0V
Av
o ov V
Page 32
© Copyright Ned Mohan 2008 32
Fourier Analysis
FOURIER COMPONENTS OF TRANSIENT RESPONSE V(vA)
DC COMPONENT = 6.080000E+00
HARMONIC FREQUENCY FOURIER NORMALIZED PHASE
NORMALIZED
NO (HZ) COMPONENT COMPONENT (DEG) PHASE (DEG)
1 1.000E+05 3.487E+00 1.000E+00 -4.860E+01 0.000E+00
2 2.000E+05 2.543E+00 7.293E-01 -7.200E+00 9.000E+01
3 3.000E+05 1.310E+00 3.757E-01 3.420E+01 1.800E+02
4 4.000E+05 1.600E-01 4.589E-02 7.560E+01 2.700E+02
5 5.000E+05 6.012E-01 1.724E-01 -6.300E+01 1.800E+02
6 6.000E+05 8.387E-01 2.405E-01 -2.160E+01 2.700E+02
7 7.000E+05 6.193E-01 1.776E-01 1.980E+01 3.600E+02
8 8.000E+05 1.600E-01 4.589E-02 6.120E+01 4.500E+02
9 9.000E+05 2.763E-01 7.923E-02 -7.740E+01 3.600E+02
10 1.000E+06 4.924E-01 1.412E-01 -3.600E+01 4.500E+02
Fourier Analysis
FOURIER COMPONENTS OF TRANSIENT RESPONSE V(vA)
DC COMPONENT = 6.080000E+00
HARMONIC FREQUENCY FOURIER NORMALIZED PHASE
NORMALIZED
NO (HZ) COMPONENT COMPONENT (DEG) PHASE (DEG)
1 1.000E+05 3.487E+00 1.000E+00 -4.860E+01 0.000E+00
2 2.000E+05 2.543E+00 7.293E-01 -7.200E+00 9.000E+01
3 3.000E+05 1.310E+00 3.757E-01 3.420E+01 1.800E+02
4 4.000E+05 1.600E-01 4.589E-02 7.560E+01 2.700E+02
5 5.000E+05 6.012E-01 1.724E-01 -6.300E+01 1.800E+02
6 6.000E+05 8.387E-01 2.405E-01 -2.160E+01 2.700E+02
7 7.000E+05 6.193E-01 1.776E-01 1.980E+01 3.600E+02
8 8.000E+05 1.600E-01 4.589E-02 6.120E+01 4.500E+02
9 9.000E+05 2.763E-01 7.923E-02 -7.740E+01 3.600E+02
10 1.000E+06 4.924E-01 1.412E-01 -3.600E+01 4.500E+02
Page 33
© Copyright Ned Mohan 2008 33
FOURIER COMPONENTS OF TRANSIENT RESPONSE V(vo)
DC COMPONENT = 6.083044E+00
HARMONIC FREQUENCY FOURIER NORMALIZED PHASE
NORMALIZED
NO (HZ) COMPONENT COMPONENT (DEG) PHASE (DEG)
1 1.000E+05 1.795E-02 1.000E+00 1.343E+02 0.000E+00
2 2.000E+05 3.400E-03 1.894E-01 1.746E+02 -9.403E+01
3 3.000E+05 8.465E-04 4.715E-02 -1.489E+02 -5.518E+02
4 4.000E+05 1.226E-04 6.826E-03 -1.492E+02 -6.865E+02
5 5.000E+05 1.602E-04 8.922E-03 1.447E+02 -5.269E+02
6 6.000E+05 1.718E-04 9.570E-03 1.707E+02 -6.352E+02
7 7.000E+05 1.158E-04 6.448E-03 -1.626E+02 -1.103E+03
8 8.000E+05 5.644E-05 3.143E-03 -1.560E+02 -1.231E+03
9 9.000E+05 4.483E-05 2.497E-03 1.751E+02 -1.034E+03
10 1.000E+06 5.570E-05 3.102E-03 1.789E+02 -1.164E+03
FOURIER COMPONENTS OF TRANSIENT RESPONSE V(vo)
DC COMPONENT = 6.083044E+00
HARMONIC FREQUENCY FOURIER NORMALIZED PHASE
NORMALIZED
NO (HZ) COMPONENT COMPONENT (DEG) PHASE (DEG)
1 1.000E+05 1.795E-02 1.000E+00 1.343E+02 0.000E+00
2 2.000E+05 3.400E-03 1.894E-01 1.746E+02 -9.403E+01
3 3.000E+05 8.465E-04 4.715E-02 -1.489E+02 -5.518E+02
4 4.000E+05 1.226E-04 6.826E-03 -1.492E+02 -6.865E+02
5 5.000E+05 1.602E-04 8.922E-03 1.447E+02 -5.269E+02
6 6.000E+05 1.718E-04 9.570E-03 1.707E+02 -6.352E+02
7 7.000E+05 1.158E-04 6.448E-03 -1.626E+02 -1.103E+03
8 8.000E+05 5.644E-05 3.143E-03 -1.560E+02 -1.231E+03
9 9.000E+05 4.483E-05 2.497E-03 1.751E+02 -1.034E+03
10 1.000E+06 5.570E-05 3.102E-03 1.789E+02 -1.164E+03
Page 34
© Copyright Ned Mohan 2008 34
Currents
Time
450us 455us 460us 465us 470us 475us 480us 485us 490us 495us 500us
I(L) I(C) I(R)
0A
10A
-4A
16A
RiL
i
Ci
Currents
Time
450us 455us 460us 465us 470us 475us 480us 485us 490us 495us 500us
I(L) I(C) I(R)
0A
10A
-4A
16A
RiL
i
Ci
Page 35
© Copyright Ned Mohan 2008 35
Frequency Analysis
SwitchingWaveform_AC-Analysis.Sch
Frequency Analysis
SwitchingWaveform_AC-Analysis.Sch
Page 36
© Copyright Ned Mohan 2008 36
Simulation Results
Frequency
100Hz 1.0KHz 10KHz 100KHz 1.0MHz
DB(V(vo)/V(VA))
-100
-50
0
50
(100.000K,-45.867)
Simulation Results
Frequency
100Hz 1.0KHz 10KHz 100KHz 1.0MHz
DB(V(vo)/V(VA))
-100
-50
0
50
(100.000K,-45.867)
Page 37
© Copyright Ned Mohan 2008 37
Transistor and diode forming a switching power-pole
in a Buck converter
Figure 1-24 Transistor and diode forming a switching power-pole in a Buck converter.
(b) (c)
(a)
inV
−
+
Li
Li Li
1Aq = 0Aq =
+
−
oV
+
−
oV
+
−
oV
inV
−
+
inV
−
+
Transistor and diode forming a switching power-pole
in a Buck converter
Figure 1-24 Transistor and diode forming a switching power-pole in a Buck converter.
(b) (c)
(a)
inV
−
+
Li
Li Li
1Aq = 0Aq =
+
−
oV
+
−
oV
+
−
oV
inV
−
+
inV
−
+
Page 38
© Copyright Ned Mohan 2008 38
Hardware Lab: very low-cost
Switching Power - Pole Board
Magnetics Plug - In Board
Feedback Control Plug - In Board
Experiments:
- Buck, Boost, Buck-Boost
- Feedback Control: Voltage-
Mode, Peak-Current-Mode
- Flyback, Forward
USERS MANUAL
www.ece.umn.edu/groups/power
Hardware Lab: very low-cost
Switching Power - Pole Board
Magnetics Plug - In Board
Feedback Control Plug - In Board
Experiments:
- Buck, Boost, Buck-Boost
- Feedback Control: Voltage-
Mode, Peak-Current-Mode
- Flyback, Forward
USERS MANUAL
www.ece.umn.edu/groups/power
Page 39
© Copyright Ned Mohan 2008 39
RECENT AND POTENTIAL ADVANCEMENTS
• Devices that can handle voltages in kVs and currents in kAs
• ASICs
• DSPs
• Micro-controllers
• FPGA
• Integrated and intelligent power modules
• Packaging
• SiC-based solid-state devices
• High energy density capacitors
RECENT AND POTENTIAL ADVANCEMENTS
• Devices that can handle voltages in kVs and currents in kAs
• ASICs
• DSPs
• Micro-controllers
• FPGA
• Integrated and intelligent power modules
• Packaging
• SiC-based solid-state devices
• High energy density capacitors
Page 40
© Copyright Ned Mohan 2008 40
CONCEPT OF PEBB
It has numerous benefits such as technology insertion and upgrade via
standard interfaces, reduced maintenance via plug and play modules,
reduced cost via increased product development efficiency, reduced time to
market, reduced commissioning cost, reduced design and development risk,
a nd i n c r e a s ed compe t i t i on i n c r i t i c a l t e chno log i e s [ 14 ] .
Power Electronics Building Block (PEBB) [15] is a broad concept that
incorporates the progressive integration of power devices, gate drives,
and other components into building blocks, with clearly defined
functionality that provides interface capabilities able to serve multiple
applications. This building block approach results in reduced cost,
losses, weight, size, and engineering effort for the application and
maintenance of power electronics systems. Based on the functional
specifications of PEBB and the performance requirements of the
intended applications, the PEBB designer addresses the details of
device stresses, stray inductances, switching speed, losses, thermal
management, protection, measurements of required variables, control
interfaces, and potential integration issues at all levels.
CONCEPT OF PEBB
It has numerous benefits such as technology insertion and upgrade via
standard interfaces, reduced maintenance via plug and play modules,
reduced cost via increased product development efficiency, reduced time to
market, reduced commissioning cost, reduced design and development risk,
a nd i n c r e a s ed compe t i t i on i n c r i t i c a l t e chno log i e s [ 14 ] .
Power Electronics Building Block (PEBB) [15] is a broad concept that
incorporates the progressive integration of power devices, gate drives,
and other components into building blocks, with clearly defined
functionality that provides interface capabilities able to serve multiple
applications. This building block approach results in reduced cost,
losses, weight, size, and engineering effort for the application and
maintenance of power electronics systems. Based on the functional
specifications of PEBB and the performance requirements of the
intended applications, the PEBB designer addresses the details of
device stresses, stray inductances, switching speed, losses, thermal
management, protection, measurements of required variables, control
interfaces, and potential integration issues at all levels.
Page 41
© Copyright Ned Mohan 2008 41
Summary
Power Electronics an Enabling
Technology
Applications
Need for High Efficiency and High Power
Density
Structure of Power Electronic Converters
Switching Power-Pole as the Building
Block
Potential for Advancements
Summary
Power Electronics an Enabling
Technology
Applications
Need for High Efficiency and High Power
Density
Structure of Power Electronic Converters
Switching Power-Pole as the Building
Block
Potential for Advancements
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