42 V-PowerNets

H. Wallentowitz • C. Amsel (Eds.)




42V-PowerNets



With 168 Figures and 16 Tables




        Springer
                                                                              IX


Contents


Introduction                                                                 XIII
42V-PowerNet:
Status of Development, Requirements and Perspective                            1
Peter Gresch
1 Introduction                                                                 1
2 Reasons                                                                      3
3 Benefits                                                                     3
4 Challenges                                                                   7
5 Introduction Scenario..                                                     10
6 Conclusions                                                                 12
7 References                                                                  14
Cable Fire i n A utomobiles: Causes, Effects a nd P revention                 15
Klaus Dieter Pohl
1 Introduction                                                                15
2 Fire in Automobiles                                                         18
3 Cable Fire as a Source of Fires in Automobiles                              21
4 Summary                                                                     38
Circuit protection components
for future vehicle electrical systems                                         41
Jo Jaspar, Neil McLoughlin, Patrick Bellew
1 Introduction: Higher System Voltage, why and when?                          41
2 System Definition                                                           43
3 Most realistic Assumptions                                                  55
4 Conclusions                                                                 71
5 References                                                                  72
Use o f P olySwitch PPTC Protectionin Automotive Applications                 75
Werner Gretzke
1 PPTC Principle of Operation                                                 76
2 Design Considerations for PPTC Devices                                      78
3 Applications for Resettable Circuit Protection in Automotive Electronics    81
4 Compliance with Industry Standards                                          86
5 Summary                                                                     87
New Fusing Concept
under Consideration o f W ire Characteristics                                 89
Werner Hinrichs, Jtirgen Scheele, Ronald Zorn
X

1 Introduction                                                                    89
2 Fuse Protection in Automotive Applications                                      90
3 Definitions, Acronyms, Abbreviations                                            98
4 References                                                                      99
Overvoltage Protection Devices
for the Automotive Power Network                                                101
Paddy O'Shea, Erich Niebler
1 Introduction                                                                  101
2 What is the Threat on 14 V/42V Systems                                        103
3 Load Dump Solutions                                                           103
4 Module Level Protection 12 V/14 V/42 V                                        107
5 Electrostatic Discharge                                                       110
6 Summary                                                                       112
Power Switches for the 42V-PowerNet                                             113
Solution for Power Net Protection and Applications
Matthias Kroeker
1 Introduction                                                                   113
2 Switching 42 V Loads                                                           115
3 References                                                                     133
Detection and Characterization of Short Circuits
in 42V-PowerNets                                                                135
Reinhard Seyer, Roland Fischer, Rainer Mackel
Horst Brinkmeyer, Fritz Schmidt, Thomas Schulz
1 Introduction                                                                   135
2 Short Circuits in 42V-PowerNets                                                136
3 Experimental Approach                                                          139
4 Characterization of the Criticality                                            141
5 Thermal Mode                                                                   143
6 Detection of Short Circuits and Protection Concepts                            144
7 References                                                                     145
Investigations of Electrical Failures in the Dual Voltage PowerNet.. 147
Ronald GroBe, Christian Amsel
1 Introduction                                                                    147
2 Concepts of Investigations of electrical Faults in Vehicle Electrical Systems.. 148
3 Summary                                                                         157
4 References                                                                      159
Protection Strategies for Future Electrical Vehicle Architectures:
Towards Fuseless Strategies                                        159
Joan Fontanilles, Carles Borrego, Gabriel Figuerola, Jordi Mestre
                                                                     XI

1 Introduction                                                      159
2 Electrical Architectures                                          160
3 Short-Circuits                                                    163
4 Arcing                                                            168
5 Conclusions                                                       174
6 Definitions, Acronyms, Abbreviations                              175
7 References                                                        175
42V-PowerNet System Protection Concepts                             177
Edmund Erich
1 Introduction                                                      177
2 42V-PowerNet: System Protection Concepts                          178
3 General Questions: What Degree of SystemProtection is required?
  What is the Cost Margin?                                          180
4 Effects in 42V-PowerNet/Corrosion                                 181
5 System Protection @ 42 V:
  Relevant Effects in Comparison to 14 V Electrical System          182
6 Effects in 42V-PowerNet/Arcing                                    183
7 Connection System related Solutions                               183
8 System Protection @ 42 V                                          184
9 Arcs @42 V/Hot Plugging                                           186
10 Effects in 42V-PowerNet/Short Circuit                            187
11 Short Circuit Protection Methods                                 189
12 Power Switching & Protection                                     189
13 How can the Cost Impact of System Prorection be limited?         190
14 Working Party Short Circuit                                      191
15 System Protection Summary                                        191
Requirements for I ntroduction of the 42V-PowerNet                  193
Volker Graf
1 Introduction                                                      193
2 Optimizing Wire Fusing                                            194
3 Fusing Circuits in a Dual Voltage PowerNet                        198
4 Arcs in 42V-PowerNets                                             201
5 Forecast                                                          204
6 References                                                        204
Test Methods for F using Devices            J                       2 05
Ronald Zorn, Jiirgen Scheele, Werner Hinrichs
1 Introduction                                                      205
2 Principle for the Release of a Fuse                               206
3 Summary                                                           209