순시전압강하 보상 기능을 가지는 무정전전원공급장치의 개발Development of Uninterruptible Power Supply with Voltage Sag Restorer Function
- Other Titles
- Development of Uninterruptible Power Supply with Voltage Sag Restorer Function
- Authors
- 박종찬; 손진근
- Issue Date
- 2014
- Publisher
- 대한전기학회
- Keywords
- Half-bridge inverter; High-efficiency PWM(pulse width modulation); Line-interactive Method; UPS (uninterruptible power supply); Voltage sag compensation
- Citation
- 전기학회 논문지 P권, v.63, no.2, pp.95 - 101
- Journal Title
- 전기학회 논문지 P권
- Volume
- 63
- Number
- 2
- Start Page
- 95
- End Page
- 101
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/13627
- ISSN
- 1229-800x
- Abstract
- In this paper, UPS, with a built-in instantaneous sag drop compensation features, was developed to improveperformance. The improved UPS, using instantaneous moving average method, compensates by quickly measuring thevoltage and series inverter of half-bridge type, using line-interactive method that links with the voltage of the batteryand power source, was developed. In addition, by developing a parallel inverter that uses a high-efficiency PWMswitching method, overall UPS system was enhanced. To verify the performance of the proposed algorithm, single-phase5[kVA] UPS systems were designed and the experimental system was constructed. The low-cost type of Cortex-M3module CPU STM32F103R8T6 (32[bit]) is attached and the switching time of mode transfer was set within 4 [ms]. THDof the linear load operates in less than 3[%], and the stability of the output voltage operates in approximately ±2[%]range. The superior performance of the operations was confirmed with the system set as above.
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