A Small Signal Rotating Frame Model of a Self-synchronizing Single-phase Grid-tied Inverter

다국어 초록 (Multilingual Abstract)

A self-synchronizing grid-tied inverter uses the internal dynamic states of the current regulator to estimate the grid voltage for synchronization. The stability analysis of a single-phase grid-tied inverter is complex because of the lack of an orthogonal channel and non-linearities present due to the phase-locked loop (PLL). This paper introduces fictitious orthogonal quantities for a single-phase grid-tied inverter, creating a model in the synchronous reference frame. This approach enables Jacobian linearization to develop a small-signal inverter model. The stability analysis of the small-signal model using Floquet theory then allows for stability boundaries to be determined across a wide range of operating conditions. The model has been validated using detailed switched simulations of a single-phase grid-tied inverter with matching experimental results.

목차 (Table of Contents)

• Abstract
• I. INTRODUCTION
• II. SINGLE-PHASE GRID-TIED INVERTER
• III. NON-LINEAR STATIONARY-FRAME MODEL WITH FICTITIOUS β -CHANNEL
• IV. TRANSFORMATION OF THE NON-LINEAR STATE-SPACE MODEL INTO A DQ-FRAME OF REFERENCE
• V. STEADY-STATE OPERATING POINT AND SMALL-SIGNAL LINEARIZATION
• VI. LINEAR DIFFERENTIAL EQUATION SYSTEM WITH PERIODIC COEFFICIENTS
• VII. SIMULATION AND EXPERIMENTAL SYSTEM DESCRIPTION
• VIII. SIMULATION AND EXPERIMETNAL RESULTS
• IX. CONCLUSION
• REFERENCES