Power Module Based Solutions for UPS Power Module Based Solutions for UPS Greater efficiency, smaller footprint, lower cost — UPS systems need to satisfy a whole new set of demands. Three-level topologies such as NPC and MNPC, paired with higher switching frequencies, can help reduce passive components› size and cost without compromising efficiency. What›s more, small add-ons to the circuit such as asymmetrical inductance can also help boost efficiency without driving up costs. 3-level topologies: Two different 3-level topologies are competing for the output inverter spot in UPS applications: NPC 3-level inverter Mixed voltage neutral clamped (MNPC) 3-level inverter The NPC topology is able to operate exclusively with 650-V components, so higher switching frequencies are easily achieved. The MNPC topology is superior when comes to static losses, overvoltage and fault-handling. Whereas NPC circuits require a turn-off sequence to protect components against overvoltage in the event of a (fault) shutdown, this is not necessary for MNPC circuits. The crossover (efficiency vs. PWM frequency) between the two topologies depends largely on the components used. With state-of-the-art, 1200-V high-speed components for MNPC, the crossover is at around 20 kHz, so MNPC topologies are superior up to 20 kHz. Losses (%) Comparison of Iosses 5 4 Halfbridge MNPC 3 NP NPC 2 1 0 0 10 20 30 40 50 70 60 Switching frequency (kHz) How a UPS topology with asymmetrical inductance and regeneration works ■ The energy stored in the parasitic inductance (PFC DC capacitor and DC capacitor inverter) is transferred to the onboard snubber capacitors. ■ The input and output snubber capacitors are connected. ■ A diode's reverse recovery current prevents the capacitor from discharging at turn-on. ■ The snubber›s stored energy is regenerated to the main DC voltage or used to charge the battery. Power Module Based Solutions for UPS The benefits of a UPS topology with asymmetrical inductance and regeneration ■ Parasitic inductance reduces the switch›s turn-on so no external low-inductive DC connection is required. ■ The onboard capacitor takes on the stored energy of the parasitic inductance at turn-off and, after reverse recovery, of the BUCK diode during turn-on. => This reduces turn-off and turn-on losses. ■ The snubber›s stored energy is regenerated to the main DC voltage or used to charge the battery. Modules designed to support systems featuring a UPS topology with asymmetrical inductance and regeneration Vincotech modules in the flow4w package >300 A are available with integrated snubber diodes and capacitors to enable designs with asymmetrical inductance. 3x 1x 3x Power Module Based Solutions for UPS UPS - Product Portfolio: PFC-BOOST Part-No Rating Housing Topology 15..30 kW 10-FZ06NBA030SA-P914L33 600 V / 30 A 10-FZ06NBA050SA-P915L33 600 V / 50 A 10-FZ06NBA075SA-P916L33 600 V / 75 A 10-FZ06NBA100SG10-M305L58 600 V / 100 A flow 0 60..100 kW 30-F206NBA200SA-M295L33 600 V / 200 A 30-F206NBA200SG-M235L25 600 V / 200 A flow 2 100..200 kW 70-W206NBA400SA-M786L 600 V / 400 A 70-W206NBA600SA-M788L 600 V / 600 A 70-W206NBA400SA01-M786L10 600 V / 400 A 70-W206NBA600SA01-M788L10 600 V / 600 A sym. BOOST fl owSCREW 4w flowSCREW 4 NPC Part-No Rating Housing Topology 5..15 kW PY07N3A015SM-M892F08Y 650 V / 15 A PY07N3A030SM-M894F08Y 650 V / 30 A flow 1 3x NPC 15..30 kW 10-FZ06NIA030SA-P924F33 600 V / 30 A 10-FZ06NIA050SA-P925F33 600 V / 50 A 10-FZ06NIA075SA-P926F33 600 V / 75 A flow 0 45..60 kW 10-F106NIA100SA-M135F 600 V / 100 A 10-F106NIA150SA-M136F 600 V / 150 A flow 1 60..100 kW 30-F206NIA200SA-M105F 600 V / 200 A 30-F206NIA300SA-M106F 600 V / 300 A NPC flow 2 Power Module Based Solutions for UPS UPS - Product Portfolio: MNPC Part-No Rating Housing Topology 10..20 kW F112M3A025SH-M746F08 1200 V / 25 A F112M3A040SH-M749F08 1200 V / 40 A flow 1 3x MNPC 20..30 kW 10-FZ12NMA040SH-M267F 1200 V / 40 A 10-FZ12NMA080SH01-M260F 1200 V / 80 A flow 0 30..50 kW 10-FY12NMA080SH-M427F 1200 V / 80 A 10-FY12NMA160SH-M420F 1200 V / 160 A fl ow 2 flo 100..200 kW 70-W212NMA400NB02-M209P62 1200 V / 400 A 70-W212NMA600NB02-M200P62 1200 V / 600 A 70-W212NMA300SC-M208P 1200 V / 300 A 70-W212NMA400SC-M209P 1200 V / 400 A 70-W212NMA600SC-M200P 1200 V / 600 A 70-W212NMC400SH01-M709P 1200 V / 400 A 70-W212NMC600SH01-M700P 1200 V / 600 A 70-W212NMC400SH-L089P 1200 V / 400 A 70-W212NMC600SH-L080P 1200 V / 600 A MNPC flowSCREW 4w Power Module Based Solutions for UPS www.vincotech.com/contact Email: [email protected] Vincotech GmbH Biberger Straße 93 82008 Unterhaching/Munich, Germany Phone +49 89 8780 67-0 Fax +49 89 8780 67-300 www.vincotech.com The information provided herein is believed to be reliable at press time. 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