Dead-zone digital controllers for improved dynamic response of low harmonic rectifiers
- 3 January 2006
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Electronics
- Vol. 21 (1), 173-181
- https://doi.org/10.1109/tpel.2005.861157
Abstract
This paper introduces a simple digital control method that enables fast regulation of the output voltage in low harmonic rectifiers with power factor correction (PFC). The method is based on the use of an insensitive region, i.e., "dead-zone," in analog-to-digital conversion, for elimination of the output capacitor voltage ripple in the feedback loop. The dead-zone can either be fixed and larger than the maximum ripple magnitude, or it can be dynamically adjusted in accordance with the output load. Simple implementations of these two dead-zone controllers are shown on an experimental completely digitally controlled 250-W boost PFC operating at 200-kHz switching frequency. The experimental results show that this control method results in low current harmonics and improved load transient responses, which are significantly faster than in low-harmonic rectifiers with conventional low-bandwidth voltage-loop controllers.Keywords
This publication has 23 references indexed in Scilit:
- Predictive Digital Control of Power Factor Preregulators With Input Voltage Estimation Using Disturbance ObserversIEEE Transactions on Power Electronics, 2005
- Modeling of quantization effects in digitally controlled DC-DC convertersPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2004
- Digital control of single-phase power factor preregulators suitable for smart-power integrationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2004
- A Parallel-Connected Single Phase Power Factor Correction Approach With Improved EfficiencyIEEE Transactions on Power Electronics, 2004
- Predictive digital current programmed controlIEEE Transactions on Power Electronics, 2003
- A DSP based controller for power factor correction (PFC) in a rectifier circuitPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Design issues for digital control of boost power factor correction convertersPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- An adaptive digital controller for a unity power factor converterIEEE Transactions on Power Electronics, 1996
- Design of a simple high-power-factor rectifier based on the flyback converterPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1990
- On the input-output stability of time-varying nonlinear feedback systems--Part II: Conditions involving circles in the frequency plane and sector nonlinearitiesIEEE Transactions on Automatic Control, 1966