Table Of Contents - Siemens SINAMICS G130 Engineering Manual

List of Contents
Fundamental Principles and System Description................................................................................. 12
█
Operating principle of SINAMICS converters ....................................................................................................... 12
General operating principle .................................................................................................................................. 12
Pulse modulation method ..................................................................................................................................... 12
Generation of a variable voltage by pulse width modulation................................................................................. 13
Maximum attainable output voltage with space vector modulation SVM .............................................................. 15
Maximum attainable output voltage with pulse-edge modulation PEM................................................................. 15
The pulse frequency and its influence on key system properties ......................................................................... 17
Output power ratings of SINAMICS converters and inverters / Definition of the output power ............................. 19
█
Supply systems and supply system types ............................................................................................................ 21
General................................................................................................................................................................. 21
Connection of converters to grounded systems (TN or TT).................................................................................. 22
Connection of converters to non-grounded systems (IT)...................................................................................... 22
Connection of converters to supply systems with different short-circuit powers ................................................... 23
Supply voltage variations and supply voltage dips ............................................................................................... 25
Behaviour of SINAMICS converters during supply voltage variations and dips.................................................... 26
Permissible harmonics on the supply voltage....................................................................................................... 32
█
Transformers ........................................................................................................................................................ 33
Unit transformers.................................................................................................................................................. 33
Transformer types ................................................................................................................................................ 34
Features of standard transformers and converter transformers ........................................................................... 35
Three-winding transformers.................................................................................................................................. 36
█
Harmonic effects on the supply system ................................................................................................................ 37
General................................................................................................................................................................. 37
Harmonic currents of 6-pulse rectifier circuits...................................................................................................... 39
Harmonic currents of 6-pulse rectifier circuits with Line Harmonics Filter ........................................................... 42
Harmonic currents of 12-pulse rectifier circuits..................................................................................................... 44
Harmonic currents and harmonic voltages of Active Infeeds (AFE technology) ................................................... 45
Standards and permissible harmonics ................................................................................................................. 47
█
Line reactors (line commutating reactors) ............................................................................................................ 51
█
Line Harmonics Filter (LHF) ................................................................................................................................. 52
█
Line filters (radio frequency interference (RFI) suppression filters or EMC filters)................................................ 54
General information and standards ...................................................................................................................... 54
Line filters for the "first" environment (residential) and "second" environment (industrial) .................................... 56
Operating principle of line filters ........................................................................................................................... 57
Magnitude of leakage or interference currents ..................................................................................................... 57
EMC-compliant installation ................................................................................................................................... 58
█
SINAMICS Infeeds and their properties ............................................................................................................... 60
Basic Infeed.......................................................................................................................................................... 60
Smart Infeed......................................................................................................................................................... 62
Active Infeed......................................................................................................................................................... 64
Comparison of the properties of the different SINAMICS Infeeds ........................................................................ 67
Redundant line supply concepts........................................................................................................................... 68
Permissible total cable length for S120 Infeed Modules feeding multi-motor drives............................................. 74
Engineering Information
SINAMICS Engineering Manual - May 2008
© Siemens AG
List of Contents
5/396