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UPS for Semiconductor Equipment Jun. 29, 2012 Contents 1. What is UPS? 2. UPS System Overview - UPS with EDLC - UPS with Battery - UPS with EDLC + Battery 3. EDLC Vs. Secondary Battery ※ Application 1 / 15 What is UPS? ◆ What is UPS? - UPS : Uninterruptible Power System (or Supply) - When the power supply (source) was shut off, UPS provide the back-up power for memory and support the operating power in short term ◆ Why does UPS need? - High-tech semiconductor equipment can be damaged or make errors by Instant Voltage Drop, Momentary Power Failure & Harmonic Distortion etc. - The stability of power source for high-precision device or equipment such as office automation, facility automation. telecommunication system etc. is essential. 2 / 15 UPS System - 1/3 ◆ Case #1: Applying only EDLC without Battery - Function : Short-term Back-up power for momnetray power failure (within seconds) - Application : * High-precision Equipment => To prevent errors caused by unstable power source (AC110V or AC220V) * High-precision Medical Equipment, High-tech Semiconductor Equipment => To support the power source for data back-up and prevent instant voltage drop when power failure within seconds. - Operation : * EDLC Provides DC Power directly to application (DC Power Source) or to inverter (AC Power Source) when power failure. DC Power DC상용전원 전원사용 Application 시스템 충전기 charger EDLC UPS AC Power AC상용전원 전원사용 Application 시스템 충전기 charger EDLC 인버터 Inverter UPS ※ Inverter : DC -> AC 3 / 15 UPS System - 2/3 ◆ Case #2: Applying only Battery withour EDLC - Function : Long-term Back-up power of main power source when power failure - Application : * General Industrial Equipment (Long-term main power source Needed) => To support main power source => The application doesn’t need rapid response time for power back-up. - Operation : * Battery provides DC Power to inverter when power failure. 전원사용 Application 시스템 AC Power AC상용전원 충전기 charger 배터리 Battery UPS 4 / 15 Inverter 인버터 UPS System – 3/3 ◆ Case #3: Applying EDLC & Battery - Function : Short-term Back-up power for momnetray power failure (within seconds) & Long-term Back-up power of main power source when power failure (Hybrid Function) - Operation : * Momentary power failure -> EDLC provides DC power with high speed response time to inverter. * Continued power failure -> Battery provides DC power to Inverter for long time. AC Power AC상용전원 전원사용 Application 시스템 EDLC 충전기 charger Battery 배터리 UPS 5 / 15 인버터 Inverter EDLC Vs. Secondary Battery Items EDLC Secondary Battery Discharging 2~5 sec. (100% Load) 5 ~ 30 min. Charging Within seconds Within hours Energy Density (Wh/kg) 0.8 ~ 10 20 ~ 150 Power Density (W/kg) 500 ~ 400 50 ~ 300 Operatng Temp. -20℃ ∼ 70℃ 0℃ ∼ 60℃ Response Time Within 2msec. 1sec. Efficiency 90 ∼ 95% 75 ∼ 85% Cycle Life >100,000 <1,000 Environment Low Power Consumption Low CO2 Industrial Waste Regulation => Disposal Cost No Noise Noise => System Engineere Needed Others 6 / 15 Application : Industrial (Power assistant/backup) • Peak Power Assist (UPS) • Advantage of improving battery’s life & size-down 7 / 15 ◆ Short-term UPS (1 – 5 seconds backup) ◊ Markets -. UPS for Semi-conductor production line Telecommunication base station Medical equipment etc. 8 / 15 9 / 15