A Proposal for Improving Efficiency of Inverter Driven Electrical Motors

Date

2011-07-28

Author

Ertan, Hulusi Bülent

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

137
views

0
downloads

Conventional inverter output has PWM output. This pulsed output waveform reduces insulation life time, contributes to quick degradation of the bearings and also is often source of acoustic noise. Furthermore, losses of PWM inverter-driven motors increase. In this paper a novel topology is proposed which is capable of generating a sinusoidal waveform, with low harmonic distortion. If the proposed method is used for driving motors, motor efficiency increases due to reduced losses and lifetime of the motor may be extended. The paper describes the topology used for generating power-level sinus output and how it works. The proposed converter is implemented and tested with resistive and inductive loads. The converter is shown to have the desired properties and the efficiency is shown to be above 95%. The tests on the converter while switching the load on and off illustrate that the converter output voltage is not affected at all from load switching.

Subject Keywords

AC Machines, Energy efficiency, Inverters, Motor drives, Power conversion, Pulse width modulated converters

URI

https://hdl.handle.net/11511/53733

Collections

Graduate School of Natural and Applied Sciences, Conference / Seminar

Suggestions

OpenMETU
Core

Sinus Output 3-Phase Inverter Topology for Improved Drive Efficiency Ertan, Hulusi Bülent (2014-09-24) Traditionally electrical drives and uninterruptable power supplies generate pulse width modulated outputs. Harmonic content of such waveforms are known to cause problems. Therefore, it is worthwhile to investigate 3-phase sinus output topologies, which can compete with traditional inverter topologies, regarding performance and cost. In this paper, first some topologies for producing single-phase sinus output are reviewed. Then, the possibility of using these single-phase units for producing 3-phase output i...
Modeling and Simulation of a Boost DC/AC Inverter fed Induction Motor Drive SÜRGEVİL, TOLGA (2011-09-10) Single-stage three-phase boost dc/ac inverters can provide sinusoidal ac output voltages which arc greater than input dc voltage without needing an intermediate dc voltage boost stage. Such a topology is cost-effective due to reduced switch count and it is suitable for compact design These unique features of this type of inverter makes it a suitable choice in many applications such as uninterruptible power supplies, variable speed ac drives, and some distributed power generation schemes. This paper aims to ...
Investigation of parallel-connected GaN E-HEMT VSI-based servo drives Yürük, Hüseyin; Keysan, Ozan; Department of Electrical and Electronics Engineering (2022-1-19) Nonlinearities in voltage source inverters (VSIs) are thought to be the primary cause of output voltage distortions which cause low-order harmonics in the output current. These nonlinearities also considerably degrades control performance and system stability for low-speed applications with low-inductance motors, particularly when the system operates in the low-torque area. The impact of the nonlinearities on the phase current and current control of a silicon (Si) metal-oxide-semiconductor field-effect tran...
Design and implementation of variable frequency sine wave output buck-boost inverter Şener, Yunus; Ertan, Hulusi Bülent; Department of Electrical and Electronics Engineering (2016) Conventional inverters have pulse-width-modulated output with a fundamental component at the desired frequency and magnitude. These converters are usually buck type and therefore the DC link voltage limits the maximum 3-phase output voltage magnitude. As a consequence, in motor drive applications field weakening is essential after a certain frequency of operation, as it becomes impossible to preserve the rated flux level. In renewable energy applications similar problems arise. When the DC link voltage fall...
Optimizing transient and filtering performance of a C-type 2nd harmonic power filter by the use of solid-state switches Gerçek, Cem Özgür; Ertaş, Arif; Department of Electrical and Electronics Engineering (2007) In this research work, the performance of a C-type, 2nd harmonic power filter is optimized by the use of a thyristor switched damping resistor. In the design of conventional C-type, 2nd harmonic filters; the resistance of permanently connected damping resistor is to be optimized for minimization of voltage stresses on filter elements arising from switchings in transient state and for maximization of filtering effectiveness in the steady-state. Transformer inrush current during energization of power transfor...

Citation Formats

H. B. Ertan, “A Proposal for Improving Efficiency of Inverter Driven Electrical Motors,” 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/53733.