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IGBT power module additions feature 3-level topology

April 12, 2012 | Paul Buckley | 222904438
IGBT power module additions feature 3-level topology Semikron has added 3-level topologies to the company's ranges of IGBT power modules. The 3-level approach offers a lower distortion factor and consequently reduced filtering requirements.
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The 3-level approach is ideal in applications where undistorted output voltage and current waveforms are needed such as uninterruptible power supply (UPS) systems and solar inverters. MiniSKiiP, SEMITOP and SKiM 4 IGBT modules will now include variants with 3-level topologies.

The baseplate-free SKiM4 module is the most powerful IGBT module in the range, with rated currents of between 200 A and 600 A. Power levels as high as 250 kVA can be achieved without needing to connect several modules in parallel. SKiM4 modules will be available in TNPC (T-Type Neutral Point Clamped) topology for 650 V and 1200 V and NPC (Neutral Point Clamped) topology for 1200 V. The TNPC modules can deliver up to 900 VDC and 480 VAC, while the NPC variants can push the EU Low Voltage Directive to its limits of 1500 VDC and 1000 VAC.

For smaller currents, baseplate-free, spring-contact IGBT MiniSKiiP modules are available. These offer solder-free mounting and are intended for rated currents of between 75 A and 200 A and reverse voltages of 650 V, offering powers of up to 85 kVA. At 4.9 A/cm, the power density is high compared with competitor products, making this module ideal for use in compact systems. A further advantage of these modules is the easy single-screw connection between module, heat sink and controller board.

The counterpart to the solder-free MiniSKiiP modules is the SEMITOP, an IGBT module that is 12 mm high and soldered on to power circuit boards for use in applications with current ratings of 20 150 A. These baseplate-free solder-connection modules will be available in NPC topology and can deliver up to 65 kVA. The voltage rating is 600 V.
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