Harmonic Reduction by Voltage Reinjection Strategy in 12-Pulse VSI for High Power Applications

Najafpour, Saeed; Ghandehari, Reza

doi:10.1109/pedstc52094.2021.9405961

Cited by 4 publications

(1 citation statement)

References 11 publications

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“…The greater the number of divisions within the period of a signal, each with different associated amplitudes, the better the shape of the output. Conventional multi-pulse converters are designed with 6 and 12 pulses, but some researchers have demonstrated that by using neutral point re-injection, an effect of pulse multiplication can be obtained [11,16,17], resulting in harmonic content reduction.…”

Section: Multi-pulse Convertersmentioning

confidence: 99%

Sliding Mode with Equivalent Control for Induction Motor Drive Based on Multi-Pulse VSC

Castañeda

Valderrabano‐Gonzalez

Morfin

2023

Energies

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In this work, the application of a sliding mode equivalent control for an induction motor drive based on a multi-pulse Voltage Source Converter is proposed. This is accomplished by transforming the squirrel-cage induction motor mathematical model into a block control form. The equivalent control method is applied to the sliding manifold, where the voltages are obtained in the stationary reference frame to control the angular velocity of the motor. In addition, a proportional-integral control is designed and applied to the motor represented in this form in order to make performance comparisons with the equivalent control method. Multi-pulse converters of 6, 12, and 84 pulses are used directly to feed the plant that is being controlled. The outcomes of using these power electronics devices are used to perform comparisons among the velocity tracking performance, control voltages in stationary reference frame, tracking errors, and rejection of external disturbances. Furthermore a dynamic and steady-state analysis of the velocity tracking performance is executed. The energy profiles for the startup, torque variations, and steady-state are also obtained. Additionally, total harmonic distortion values are added. All comparisons are carried out using the established plan for the motor, both with and without the use of power electronics converters, and with both control algorithms. The obtained results demonstrate that the use of a high-quality voltage source converter, along with a good control strategy, allows for a general improvement in the overall system and a significant reduction in energy usage, whilst also reducing controller complexity.

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Section: Multi-pulse Convertersmentioning

confidence: 99%

Sliding Mode with Equivalent Control for Induction Motor Drive Based on Multi-Pulse VSC

Castañeda

Valderrabano‐Gonzalez

Morfin

2023

Energies

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A simple 60‐pulse voltage source inverter using voltage reinjection strategy to improve voltage harmonics for high‐power local loads

Najafpour,

Ghandehari

2024

IET Power Electronics

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The voltage reinjection strategy is an effective solution to improve the voltage quality of the voltage source inverters for high‐power applications. In this article, the fundamentals of voltage reinjection strategy are analyzed to reduce voltage harmonics of the output voltage. Then, a novel voltage reinjection circuit is proposed which can generate a 5‐level voltage to be injected on the voltages of the DC sources. The reinjected voltage can create a 60‐pulse voltage waveform for a three‐phase load. Turn ratio optimization of the reinjection transformer has a significant effect on the improvement of the harmonic situation of the output voltage. Furthermore, the proposed reinjection circuit provides ZVS conditions for the main switches to reduce switching losses considerably. The simulation results indicate that the proposed reinjection circuit can reduce the output voltage THD to 3.16% without any type of filter or modulation, and the load variation does not have a considerable effect on the voltage quality. The experimental results approve the analytical trend and simulation process and also confirm the reinjection circuit performance. According to the results, the proposed method has generated a semi‐sinusoidal voltage waveform with in the laboratory.

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Voltage Reinjection vs PWM: a Comprehensive Comparison to Improve the Harmonic situation

Najafpour

Ghandehari

2022

2022 13th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)

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Harmonic Reduction by Voltage Reinjection Strategy in 12-Pulse VSI for High Power Applications

Cited by 4 publications

References 11 publications

Sliding Mode with Equivalent Control for Induction Motor Drive Based on Multi-Pulse VSC

Sliding Mode with Equivalent Control for Induction Motor Drive Based on Multi-Pulse VSC

A simple 60‐pulse voltage source inverter using voltage reinjection strategy to improve voltage harmonics for high‐power local loads

Voltage Reinjection vs PWM: a Comprehensive Comparison to Improve the Harmonic situation

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