Novel Inverter Topology for Enhanced Low Speed Performance of IM Drives
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2015, Vol 3, Issue 12
Abstract
At zero stator frequency the stator quantities are not affected by the rotor speed and, therefore, the speed cannot be observed from measured stator voltages and currents. Further, the stator voltage provided by the inverter is difficult to measure and sometimes is assumed to be equal to the reference voltage or calculated from the DC link voltage and inverter switches conditions. The errors caused are often negligible in high speeds. However, they can be relatively high in low speeds, since the voltages are reduced to maintain the reference flux and the errors due to the voltage drops and dead times in the switching devices become more prominent in lower output voltage range. However, they need a high computational effort to be implemented and a kind of intervention in the machine is necessary Despite the many attempts to obtain accurate flux and speed estimation for wide speed range induction motor drives proposed recently, it seems that the solutions do not meet simultaneously the simplicity, accuracy and reliability requisites to be largely accepted and used in the industries. This instantaneous average voltage-measuring scheme was used to obtain the results in this paper. The scheme is simple and inexpensive.
Authors and Affiliations
Vaisakh. T
Keywords
Related Articles
- EP ID EP21511
- DOI -
- Views 218
- Downloads 4
Design an Expert System for Ranking of Software metrics
This research paper represents a framework for ranking of software metrics based on expert opinion elicitation and fuzzy-based matrix methodology. The proposed methodology is able to accommodate the imprecise and inexac...
Automatic Disfluency Identification and Recognition from Conversational Speech
Speech is the central mechanism that supports daily communication with others and plays an important role in establishing and sustaining social relationships. Stuttering disrupts normal flow of speech and interferes wit...
Detection and Classification of Brain Tumor Images Using Back Propagation Fuzzy Neural Network
Artificial Neural networks are a substantial research area in medical image classification. The Bio Medical image recognition techniques have been generally applied in various diagnosis diseases to predict the result mo...
Review of Kisan Krushi Marketing using Wireless Technology
Indian people mostly dependent on agricultural. Most of the peoples in India are farmers. Every day peoples uses the vegetables in meals. So daily consumption of vegetables item in meals are high and increase every day,...
A Novel Approach for Transaction Management in Heterogeneous Distributed Database Systems
RESTful APIs are widely adopted in designing components that are combined to form web information systems. The use of REST is growing with the inclusion of smart devices and the Internet of Things, within the scope of w...