Stability and Bandwidth Implications of Digitally Controlled Grid-Connected Parallel Inverters
نویسندگان
چکیده
منابع مشابه
Small-Signal Modeling of Digitally Controlled Grid-Connected Inverters With $LCL$ Filters
When LCL filters are applied to digitally controlled grid-connected inverters, the design of controllers is usually implemented using classic average models. The accuracy of these models in s-domain is only guaranteed in low frequency range. In order to predict the dynamic behaviors, new smallsignal z-domain models are deduced for digitally controlled gridconnected inverters with converter curr...
متن کاملCapacitor Current Feedback-Based Active Resonance Damping Strategies for Digitally-Controlled Inductive-Capacitive-Inductive-Filtered Grid-Connected Inverters
Inductive-capacitive-inductive (LCL)-type line filters are widely used in grid-connected voltage source inverters (VSIs), since they can provide substantially improved attenuation of switching harmonics in currents injected into the grid with lower cost, weight and power losses than their L-type counterparts. However, the inclusion of third order LCL network complicates the current control desi...
متن کاملPll for Single Phase Grid Connected Inverters
In grid connected applications the synchronization of output signals of the converters to be connected with grid parameters frequency and phase is of great importance. Different methods based on Fourier transforms, zero-crossing detection, Kalman filters, phase-locked loops (PLL) and others are used for this synchronization. This paper presents a new PLL for synchronization of the output curren...
متن کاملResonant Characteristics Analysis and Suppression Strategy of Multiple Parallel Grid-connected Inverters with LCL Filter
The multiple parallel inverters have more than one resonant frequency influenced by many factors, which tends to result in stability and power quality problems. This paper develops the multiple input multiple output model of the grid-connected inverters system using the closed-loop transfer function. The influence factors of resonant characteristics are analyzed with the developed model. The an...
متن کاملA Fully Decentralized Control of Grid-Connected Cascaded Inverters
This letter proposes a decentralized control scheme for grid-connected cascaded modular inverters without any communication, and each module makes decisions based on its own local information. In contrast, the conventional methods are usually centralized control and depend on a real-time communication. Thus, the proposed scheme has advantages of improved reliability and decreased costs. The ove...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Industrial Electronics
سال: 2010
ISSN: 0278-0046,1557-9948
DOI: 10.1109/tie.2010.2041741