Reactive Power Compensation Using Induction Motor Driven by Nine Switch AC-DC-AC Converter

Jibhakate, Chaitanya; Chaudhari, Madhuri A.; Renge, M. M.

doi:10.1109/access.2017.2778291

Cited by 29 publications

(9 citation statements)

References 19 publications

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“…Based on the research findings [28][29][30][31][32] and according to the above current-limiting starting characteristic curve, a device was developed which integrated current-limiting starting, reactive compensation, and harmonic filtering (hereinafter referred to as integrated device). The topological structure of the integrated device is shown in Figure 2.…”

Section: Topologial Structurementioning

confidence: 99%

Current-Limiting Soft Starting Method for a High-Voltage and High-Power Motor

et al. 2019

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Focusing on the starting problems of a high-voltage and high-power motor, such as large starting current, low power factor, waste of resources, and lack of harmonic control, this paper proposes a current-limiting soft starting method for a high-voltage and high-power motor. The method integrates functions like autotransformer voltage reduction–current limiting starting, magnetron voltage regulation–current limiting starting, and reactive power compensation during starting, and then the power filtering subsystem is turned on to filter out harmonics in power system as the starting process terminates. According to the current-limiting starting characteristic curve, the topological structure of the integrated device is established and then the functional logic switching strategy is put forward. Afterwards, the mechanisms of current-limiting starting, reactive compensation and dynamic harmonic filtering are analyzed, and the simulation and experimental evaluation are completed. In particular, the direct starting and the current-limiting are performed by developing a simulation system. In addition, a 10 kV/19,000 kW fan-loaded motor of a steel plant is chosen as the subject to verify the performance of the current-limiting soft starting method. As shown by the experimental results, the motor’s starting current is about 2 times that of its rated current, the power factor is raised to over 0.9 after the reactive power compensation, and the harmonic filter can effectively eliminate current harmonics and reduce the total harmonic distortion (THD) of supply currents.

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Section: Topologial Structurementioning

confidence: 99%

Current-Limiting Soft Starting Method for a High-Voltage and High-Power Motor

et al. 2019

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“…Harmonics will not only affect the power quality and reduce the use efficiency of electric equipment, but also cause interference and even major accidents to the electric equipment and its communication equipment [13][14][15]. Therefore, effective suppression measures should be taken for circuit harmonics [16][17][18][19]. At present, the harmonic suppression methods include: connecting active and passive compensation circuits and hybrid power filters in the circuit [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Analysis of harmonic influence of improved PFC circuit on SS4G electric locomotive

Wang

Shi

2022

J. Phys.: Conf. Ser.

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Compared with active filter, PFC circuit has simple structure and convenient operation. Introducing it into SS4G electric locomotive can greatly reduce system harmonics. Therefore, firstly, the corresponding PFC circuit is built, and the suppression measures of peak section and discontinuous section are proposed. By improving the discontinuous section, the waveform conduction angle is expanded from 129.564° to 162.882°. Accordingly, the current harmonic at the input side is reduced from 27.38% to 16.19%. After the voltage multiplier is further introduced, the harmonic is reduced to 15.77%. Then, the circuit is designed to absorb the high-order harmonic power in the peak section, and the harmonic is further reduced by about 0.33% to 15.44%. Two small order smoothing capacitors are connected in parallel in the load section to further absorb higher harmonics, which can reduce harmonics to 9.95%. Because the discontinuous section will also produce some spikes in the improvement process, improving the spikes can reduce the harmonics by 4.42% to 5.53%. Then the final improved circuit is introduced into SS4G circuit, and the current harmonic content of the circuit is reduced from 30.02% to 15.59%. The improved PFC circuit has achieved good results in SS4G.

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“…Literature has also shown that the NSI is a highly functional topology; it is well suited for various applications that require both CF and DF operating modes. The NSI, therefore, has a wide variety of uses, such as uninterruptible power supplies [2], drive systems [5]- [7], [13], charging and propulsion systems for EVs [14], reactive power compensation [15], wind energy [16], unified power quality conditioner [17], [18] and reactive power and current harmonic control for unbalanced systems [19].…”

Section: Introductionmentioning

confidence: 99%