Superior Performance for Industrial Power Regeneration
General descriptionThe SINAMICS SM120 CM (Cabinet Modules) with itsmulti‑level Active Line Module is uniquely suitable for industrialpower regeneration applications and ensures a superior performancewhile feeding energy into the grid. The SINAMICS SM120 CMis the best choice to fulfill the application specific requirementswhich range from the need to meet electric utility’s strictstandards, to react fast in the event of line failures or to createan independent island network, since it provides line‑friendly andgrid‑compliant behavior and enables island network andtransformer‑less operations.
FeaturesSuperior line performance
Due to its integrated Siemens patented M2C topology the driveprovides a sinusoidal voltage wave‑form to the grid. The harmonicsremain significantly below all world‑wide commonly applied utilityrequirements.
The SINAMICS SM120 CM complies with even the mostdemanding grid‑code requirements, which allows smooth and effectiveintegration into any grid while conventional regenerating drivescause harmonic currents and thus usually call for additional linefilters. This is particularly important for weak and islandnetworks to ensure robust operation.
Transformer‑less System Design
Especially for ship applications (e.g. shaft generators) theSINAMICS SM120 CM provides additional keybenefits.
Depending on the grid and the drive input voltage, the multi‑levelActive Line Module can also operate directly connected tothe power supply with a line reactor only. Such a transformer‑lesssystem design saves space and weight, reduces cabling and requiresno transformer monitoring. Moreover the system efficiency increasessignificantly.
Single Line diagram of the SINAMICS SM120 CM with atransformer‑less system design
优势Line-friendly
Grid-compliant
Island network operation
Transformer‑less operation
应用The Active Line Module of the SINAMICS SM120Cabinet Module (CM) with its Modular Multilevel Converter(M2C) is ideal for applications such as:
Shaft generator/boosters
Generators in hydro power stations
Test bench drives
Ore conveyors
技术规范Brief overview
Type of Module
Function
Power range
Active Line Module | Supply and regenerative feedback unit to feed the connectedmotor modules | 4.16 kV: 7900 kVA |
Motor Module | Inverter for the connected motor | 4.16 kV: 7200 kVA |
Braking Module | Central brake chopper as cost effective alternative to theactive line modules when regenerative energy occurs | 4.16 kV: 6400 kW |
Recooling Module | Unit dissipates the power loss from the converter | 200 kW power losses |
Control Module | Unit controls and monitors the drive | For one motor axis with one control unit |
Drive Characteristics
The SINAMICS SM120 Cabinet Modules system features:
Active Line Module with industry-leading M2C (Modular MultilevelConverter) topology
Motor Module with most common and widely used 3-level NPC,optionally equipped with output reactor allowing cable length up to1000 m
Control Module featured with SINAMICS platform-wide usedcomponents
Braking Module that allows controlled ramp down also in case ofpower supply failure (option)
Recooling Module with redundant pumps
Other modules for additional applications will be available at alater date.
