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7

PEEC based simulations in Power Electronics applications

Stanislav Skibin

ABB Switzerland

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7Outline

1. Power Electronics applications2. EMC aspects in the power electronics area

1. Current switching with IGBT power modules (PM)2. Parallelization of switching elements3. Coupling mechanisms in PMs

3. Abstraction modeling levels1. Component level

1. IGBT MV power module2. IGBT HV power module3. Gate Commutated Thyristor (GCT)

2. Application level1. Frequency converter2. HVDC-light

4. Export of the PEEC impedance matrix5. Summary

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7Power Electronics applications

� High Voltage (from ~15 kV AC)Example: HVDC Light ®

� Medium Voltage (until ~15 kV AC)Example: Traction converter

� Low Voltage (until 690 V AC)Example: Frequency

converter for Pulp & Paper

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7EMC aspects in the power electronics area

=≈≈≈≈

3 Phase, AC f2 = 0 - 120 Hz

Converter DC/AC(Power Module)

=≈≈≈≈

3 Phase, ACf1 = 50 / 60 Hz

RectifierAC/DC

DC-caps

Pulse Width Modulation (PWM): fPWM = 5 – 16 kHz

Current switching in frequency converters

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7EMC aspects in the power electronics area

Parallelization of switching elements

Parallel connection of:

12 Diodes

28 IGBTs

Design Challenge:

Equal and simultaneous load of all diodes and IGBTs

LV Power Module

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7EMC aspects in the power electronics area

Influence of the packaging design on characteristics of a Power Module

PEEC Model

Collector current through single IGBT chips

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7EMC aspects in the power electronics area

Inductive coupling

MV Power Module

Simulated magnetic field vectors

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7EMC aspects in the power electronics area

Capacitive and Galvanic couplings

Motor Cable

Motor

Heat Sink

Housing

PCB

Module

Capacitors Drive

Supply Cable

= Capacitive Coupling Paths

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7Abstraction modeling levels

Component level

• Exact modeling (minimum simplifications)

• Using of precise models of lumped elements

• Quantitative results

Application level

• Simplified modeling

• Large number of unknowns

• Qualitative results

Power Modules

GCT and GTO Thyristors

Frequency Converter

HVDC light valves

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7Component level

IGBT MV Power ModuleMV Power Module (PM) PEEC-Model of the PM

1/3 module SPICE circuit Expectations

• Significant number of unknowns

• Fast modeling and modification time

• Export to a standard SPICE simulator

• Validity for the certain frequency range (ROM)

• Field calculation

PEEC Model

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7Component level

IGBT HV Power Module

Expectations

• Significant number of unknowns

• Fast modeling and modification time

• Export to a standard SPICE simulator

• Validity for the certain frequency range (ROM)

• Field calculation

I-PEEC Simulation Results

I-PEEC Model

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7Component level

Gate Commutated Thyristor (GCT)

Expectations

• Non orthogonal mesh (segments)

• Validity for the certain frequency range (ROM)

• Opportunity to extract an inductance for asingle arbitrary path

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7Application level

Frequency Converter

C5

C5 Expectations

• Large number of unknowns

• Reasonable simulation time

• Import from CAD files

• Intrinsic SPICE simulator

• 2,5D modeling

• Field calculation

PCB of a frequency converter

Expanded model of a multilayer PCB

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7Application level

HVDC light Valve

Expectations

•Large number of unknowns

• Reasonable simulation time

• Parameterized modeling

• Intrinsic SPICE simulator

• 3D modeling

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7Export of the PEEC Impedance Matrix

22

2��

���

�→ NrNp

Impedance matrix size reduction

Np – number of unknowns in thePEEC matrix

Nr – number of defined ports

39 (?)44SIMetrix simulation time, min

315032803273PEEC simulation time, s

135861358613586Number of segments

ROM500 kHz10 kHzParameter

PEEC Model

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7Summary

PEEC Solver

Time Domain

• Large number of unknowns

• Import from CAD files

• Reasonable simulation time

• Intrinsic SPICE simulator

• Field calculation

• Calculation of the current distribution

• Fast modeling and modification time

• Export into a standard SPICEsimulator

• Validity for the certain frequency range (ROM)

• 3D modeling

• Parameterized modeling

• Opportunity to extract an inductance for asingle arbitrary path

• Non orthogonal mesh (segments)

Frequency Domain