Title :
Multi-Rate Repetitive Controller for UPS Applications
Author :
Stefanello, Márcio ; Pinheiro, Humberto ; Gründling, Hilton Abílio
Author_Institution :
Univ. Fed. de Santa Maria, Santa Maria
Abstract :
This paper proposes a modified repetitive (RP) plug-in controller for odd-harmonic suppression in a multi- rate framework. Such scheme improves the stability margin and the transient response if compared with conventional RP approach. In addition, it reduces the memory length demanded in a practical implementation. A dynamic model for the multi- rate system with a RP plug-in controller is derived and the impact of the sampling rate on the stability margins is demonstrated. Experimental in a lOkVA three-phase inverter controlled by a TMS 320F2812 is presented to support the theoretical developments.
Keywords :
controllers; discrete time systems; harmonics suppression; invertors; power system control; uninterruptible power supplies; TMS 320F2812; modified repetitive plug-in controller; multirate repetitive controller; odd-harmonic suppression; pole-zero cancelation; sampling rate; stability margin; three-phase inverter; uninterruptible power supply; Control systems; Error correction; IEC standards; Inverters; Power harmonic filters; Signal generators; Stability; Transfer functions; Uninterruptible power systems; Voltage control;
Conference_Titel :
Industry Applications Conference, 2007. 42nd IAS Annual Meeting. Conference Record of the 2007 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
978-1-4244-1259-4
Electronic_ISBN :
0197-2618
DOI :
10.1109/07IAS.2007.353
