SHE PWM technique for three phase three level voltage source inverter

Bisoyi, Sanjiba Kumar; Agarwal, Nirmal Kumar

doi:10.1109/icpcsi.2017.8392012

Cited by 6 publications

(2 citation statements)

References 13 publications

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“…Currently, much attention is devoted to the control methods of 3L NPC VSI [10][11][12][13][14]. Among them, the space-vector PWM (SVPWM) algorithm has gained significant popularity for controlling these inverters [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

An Algorithm for a Space-Vector Pulse Width Modulation with a Hybrid Switching Sequence for a Three-Level Neutral Point Clamped Voltage Source Inverter

A. N. Shishkov, V. K. Le

2024

pst

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This paper proposes a new algorithm for a space-vector pulse width modulation (SVPWM) with a hybrid switching sequence (SS) designed to control a three-level (3L) neutral point clamped (NPC) voltage source inverter (VSI). Based on the advantages of five-stage and seven-stage SS, we designed a hybrid SS to improve four key parameters in the system: inverter output current quality, neutral point (NP) and common-mode (CM) voltage levels, and switching losses of power switches. The proposed algorithm flexibly regulates meeting the four criteria depending on the system operating conditions by changing the regulation coefficient. The paper obtained an approximate dependence to determine the optimal regulation coefficient for any values of the inverter modulation coefficient when operating jointly with an active-inductive load. The effectiveness of the proposed algorithm is confirmed by computer simulation in the MatLab+Simulink environment, as well as the results of experimental studies. The paper presents the experimental dependences of static state spaces, including the distortion coefficient of higher current harmonics at the inverter output, the maximum error of the NP voltage, the number of switching pairs of power switches, and the pulse duty factor of CM voltage, depending on the inverter modulation coefficient and the regulation coefficient of the hybrid SS. The results showed that in the algorithm for a SVPWM with a hybrid SS, the number of switchings of power switches is reduced by an average of 13.5 % while maintaining the NP voltage balance and the quality of the curve at the inverter output at an acceptable level, close to a seven-stage SS (the deviations do not exceed 0.5 % and 0.2 %, respectively). The average CM voltage coefficient decreased by no more than 4.5 %. The indicators improve the energy saving, the weight-size parameters, and the operational reliability of the 3L NPC VSI. The application area of the algorithm is much wider and includes the control of power switches of active front ends, grid converters for electricity storage systems, active power filters, and power conditioners. DOI: https://doi.org/10.52783/pst.237

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Section: Introductionmentioning

confidence: 99%

An Algorithm for a Space-Vector Pulse Width Modulation with a Hybrid Switching Sequence for a Three-Level Neutral Point Clamped Voltage Source Inverter

A. N. Shishkov, V. K. Le

2024

pst

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“…W ITH the development of the high-power semiconductors, the capacity of a single power electronic device has increased to the level of several megawatts [1]. Due to the advantages of lower dv/dt, reduced total harmonic distortion (THD), lower switching frequency and smaller electromagnetic interference, multi-level topologies such as neutral point clamped (NPC) converters, modular multilevel converters (MMC), and cascaded H-bridges (CHB) are playing an increasingly important role in the high-power industries [2]- [4]. In these devices, switching power loss, passive filter volume, system efficiency and harmonic performance are the main concerns.…”

Section: Introductionmentioning

confidence: 99%

Dynamic and Steady State Response Analysis of Selective Harmonic Elimination in High Power Inverters

Cheng

Chen

et al. 2021

IEEE Access

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Selective harmonic elimination (SHE) technique has drawn tremendous interests for its superior harmonic performance, especially in high power devices where switching power loss and passive filter size are the main concerns. However, the drawbacks of slow dynamic response and difficulties in hardware implementation limit its engineering application. Based on a 3-level inverter, this paper analyzes the dynamic response of SHE. A system model is established and an improved method of updating the switching angles at sampling frequency is proposed. And a combination of notch filters and low-pass filter is designed to achieve a higher system bandwidth. The dynamic response and stability of the system are analyzed in detail. In addition, the influence of control errors on steady-state performance during hardware implementation is also discussed. A simple hardware structure of a DSP with a small-scale FPGA is adopted to realize the above method. Both dynamic response and steady-state response of the improved system are analyzed and compared with the regular SHE modulation and the widely used sinusoidal pulse width modulation (SPWM). Simulation and experimental results provided that the improved method proposed in this paper retains the excellent steady-state characteristics of the regular SHE modulation, and at the same time achieves as good dynamic performance as SPWM.INDEX TERMS Dynamic response, high power inverter, selective harmonic elimination, steady-state response.

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Selective harmonic elimination pulse width modulation for three-phase nine-level inverter using improved whale optimization algorithm

Bimazlim,

Ismail,

Aihsan

et al. 2023

The 15th Universiti Malaysia Terengganu Annual Symposium 2021 (Umtas 2021)

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SHE PWM technique for three phase three level voltage source inverter

Cited by 6 publications

References 13 publications

An Algorithm for a Space-Vector Pulse Width Modulation with a Hybrid Switching Sequence for a Three-Level Neutral Point Clamped Voltage Source Inverter

An Algorithm for a Space-Vector Pulse Width Modulation with a Hybrid Switching Sequence for a Three-Level Neutral Point Clamped Voltage Source Inverter

Dynamic and Steady State Response Analysis of Selective Harmonic Elimination in High Power Inverters

Selective harmonic elimination pulse width modulation for three-phase nine-level inverter using improved whale optimization algorithm

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