Parallel operation of voltage source inverters using SHE-PWM based on genetic algorithm

Omara, Ahmed M.; El-Nemr, Mohamed K.; Moschopoulos, Gerry

doi:10.1109/mepcon.2017.8301348

Cited by 4 publications

(3 citation statements)

References 17 publications

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“…From Fig. 6, the open loop transfer function is derived in (12) and its Bode diagram is shown in Fig. 7.…”

Section: System Modeling and Dynamic Responsementioning

confidence: 99%

“…In recent years, with the development of the digital processors, SHE has regained interests and has been studied a lot. Most of the research focuses on the following aspects, a) solution range extending, b) formulations in multilevel situations, c) optimization or mitigation based techniques, d) methods that facilitate online implementation, e) power balance or DC link voltage equalization [12]- [15]. These studies have greatly broadened the application areas of SHE, from variable frequency motor drives, high-power current source rectifiers to multi-level grid-connected voltage source inverters [16].…”

Section: Introductionmentioning

confidence: 99%

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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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“…From Fig. 6, the open loop transfer function is derived in (12) and its Bode diagram is shown in Fig. 7.…”

Section: System Modeling and Dynamic Responsementioning

confidence: 99%

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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“…Another candidate solution might be selective harmonic elimination PWM (SHE-PWM), which allows to decrease the switching frequency and remove a set of selected harmonics. Such a method was applied for parallel inverters driving a single load separated by line reactors [31]. However, this method requires precomputation of the appropriate PWM patterns, which is hardly possible in real-time [32,33].…”

Section: Space Vector Pulse Width Modulation (Svpwm)mentioning

confidence: 99%

Hybrid Modulation for Modular Voltage Source Inverters with Coupled Reactors

et al. 2020

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This paper proposes and discusses a concept of a hybrid modulation for the control of modular voltage source inverters with coupled reactors. The use of coupled reactors as the integrating elements leads to significant reduction in the size and weight of the circuit. The proposed modulation combines novel coarsely quantized pulse amplitude modulation (CQ-PAM) and innovative space-vector pulse width modulation (SVPWM). The former enjoys very low transistor switching frequency and low harmonic elimination, while the latter ensures high resolution of amplitude control. The SVPWM is based on the use of barycentric coordinates. The feasibility of the proposed solution is verified by simulations and laboratory tests of a 12-pulse modular voltage source inverters with two-level and three-level component inverters.

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Application of a SHE-PWM modulation for a low switching frequency motor drive with harmonic investigation using the DTFT

Gomes

Souza

Ramos

et al. 2019

2019 IEEE 15th Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference (COBEP/SPEC)

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Parallel operation of voltage source inverters using SHE-PWM based on genetic algorithm

Cited by 4 publications

References 17 publications

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

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

Hybrid Modulation for Modular Voltage Source Inverters with Coupled Reactors

Application of a SHE-PWM modulation for a low switching frequency motor drive with harmonic investigation using the DTFT

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