Abstract
In this paper, a simplified control architecture, including individual layer control and recover layer control, is proposed for a modular online uninterruptible power supply (UPS) system is presented. The parallel control algorithm of for the DC/AC modules are mainly concentrates on the active power sharing performance due to the existence of the shunt active power filter (APF). APF will deal with the reactive power brought by the nonlinear load to guarantee that all DC/AC modules are faced with a resistive type load. On the other hand, since there is no regulation on the UPS output voltage frequency or phase angle, the recovery layer control is only concerned with the amplitude of the UPS output voltage, which means that the working load of the communication network is reduced by half. Consequently, the reliability of the system is improved. Experimental results are presented in this paper in order to validate the proposed system architecture and control.
| Original language | English |
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| Title of host publication | Proceedings of the 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia) |
| Number of pages | 8 |
| Publisher | IEEE Press |
| Publication date | 2015 |
| Pages | 413 - 420 |
| Article number | 7167819 |
| ISBN (Print) | 978-895708254-6 |
| DOIs | |
| Publication status | Published - 2015 |
| Event | 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia 2015) - Seoul, Korea, Republic of Duration: 1 Jun 2015 → 5 Jun 2015 |
Conference
| Conference | 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia 2015) |
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| Country/Territory | Korea, Republic of |
| City | Seoul |
| Period | 01/06/2015 → 05/06/2015 |
Keywords
- Modular UPS system
- Shunt active power filter
- Simplified control architecure