A New Structure of the Nine Level Inverter Used as Active Power Filter with a Reduced Number of Swiches

<span>The world community relied heavily on fossils energies but just after the big oil crisis the use of renewable energy has greatly increased and has become the main interest of many countries for its many advantages such as: minimal impact on the environment, renewable generators requiring less maintenance than traditional ones and it has also a great impact on economy. It is easy to get charmed by the advantages of using the renewable resources but we must also be aware of their disadvantages. One of the major disadvantages is that the renewable energy resources are intermittent and thus they have led scientists to develop new semiconductor power converters among which are the multilevel inverter. In this paper a new smart multi-level inverter is proposed so as to increase its levels according to the user’s needs and also to avoid the impact of shades and the intermittence on photovoltaic panels. We also propose a modification on the multicarrier aiming to reduce the harmonics. This modification introduces a sinusoidal wave compared with trapezoidal multi-carrier to generate the pulses. In order to obtain the line voltages and the total harmonic distortions (THD) MATLAB/SIMULINK is used.</span>

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“…• Without drivers MOSFET switching can cause a feedback to the control circuit, while the drivers are designed to handle this problem [24].…”

Section: H-bridge With Drivermentioning

confidence: 99%

A smart cascaded H-bridge multilevel inverter with an optimized modulation techniques increasing the quality and reducing harmonics

Babkrani¹,

Naddami²,

Hilal³

2019

IJPEDS

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“…There are many types of disturbances which can affect or precisely reduce the grid power quality (PQ) [1,2]. Power disturbances depending on their magnitudes, nature of the end users, intermediary power devices among others can affect the quality of the grid system significantly.…”

Section: Introductionmentioning

confidence: 99%

Enhanced decoupled current control with voltage compensation for modular multilevel converter (MMC) based STATCOM

Abdu¹,

Almurib²,

Khor³

2019

IJPEDS

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<p>This paper presents the application of modular multilevel converter (MMC) as a static compensator (STATCOM) for reactive current control. The current control is mostly achieved using proportional controller, proportional-integral (PI) controller, and hysteresis controller among others. PI controllers have the advantage of low harmonics and small variations. However, due to the PI controller’s dependency on the system parameters and also due to the variations within the MMC during capacitors voltage control, variation in the MMC performance during the STATCOM non-ideal operations occur. To mitigate this, an improved performance of MMC will be presented using vector-based compensation concept. The proposed control will be introduced to depress the effect of the dynamics of the MMC based STATCOM non-ideal variations considering the impact of the voltage disturbance. This will be achieved by the introduction of voltage variables to subtract the transient variations from PI controllers’ outputs at the grid-interface; thus, improving the performance.</p>

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“…Given that Voltage Source Inverters (VSIs) display high power factor owing to pulse width modulated (PWM) control strategies being implemented, they are known to be the most inverters utilized in photovoltaic applications [5]- [8]. Needless to say, the current source inverters (CSIs) are being used for medium and high power applications in general.…”

Section: Introductionmentioning

confidence: 99%

A Novel DC-AC Inverter Topology to Eliminate Leakage Current

Selmi

Rezgui

2018

IJPEDS

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Experiments confirmed that Transformerless Inverters (TIs) deliver more reliability and higher energy efficiency. Nonetheless, one of the shortcomings of TIs is the leakage current that occurs between the photovoltaic (PV) string terminals and the ground. Such a drawback is justified by the non-galvanic isolation caused by the transformer being omitted. As such, this study is intended to develop a novel TI inverter topology for solar PV systems. The latter is meant to remove the leakage current and enhance the operating system of the entire PV conversion as well. Added to its null zero-crossing distortion and capability regarding energy efficiency, the developed TI, being validated by simulation and experiment, eradicated the leakage current.

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A New Structure of the Nine Level Inverter Used as Active Power Filter with a Reduced Number of Swiches

Cited by 3 publications

References 16 publications

A smart cascaded H-bridge multilevel inverter with an optimized modulation techniques increasing the quality and reducing harmonics

A smart cascaded H-bridge multilevel inverter with an optimized modulation techniques increasing the quality and reducing harmonics

Enhanced decoupled current control with voltage compensation for modular multilevel converter (MMC) based STATCOM

A Novel DC-AC Inverter Topology to Eliminate Leakage Current

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