A new method for minimizing of voltage stress across devices in Z-source inverter

Rostami, Hamid; Khaburi, Davood Arab

doi:10.1109/pedstc.2011.5742492

Cited by 8 publications

(7 citation statements)

References 11 publications

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“…SPWMs include simple boost control, maximum boost control, maximum constant boost control, and constant boost control with third-harmonic injection [92]- [95]. A comparison of some of these SPWMs is presented in [96] in terms of the voltage gain. Simple boost control is the most basic and is derived from the traditional sinusoidal PWM where a carrier triangular signal is compared to the three-phase reference signal for sinusoidal output voltage and two straight lines (V p and V n ) to create shoot-through for voltage boost as shown in Fig.…”

Section: B Modulation Techniques For Three-phase Topologies (2 Level)mentioning

confidence: 99%

Impedance-Source Networks for Electric Power Conversion Part II: Review of Control and Modulation Techniques

Siwakoti

Peng

Blaabjerg

et al. 2015

IEEE Trans. Power Electron.

330

181

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Impedance-source networks cover the entire spectrum of electric power conversion applications (dc-dc, dc-ac, ac-dc, ac-ac) controlled and modulated by different modulation strategies to generate the desired dc or ac voltage and current at the output. A comprehensive review of various impedance-sourcenetwork-based power converters has been covered in a previous paper and main topologies were discussed from an application point of view. Now Part II provides a comprehensive review of the most popular control and modulation strategies for impedancesource network-based power converters/inverters. These methods are compared in terms of theoretical complexity and performance, when applied to the respective switching topologies. Further, this paper provides as a guide and quick reference for researchers and practicing engineers in deciding which control and modulation method to consider for an application in a given topology at a certain power level, switching frequency and demanded dynamic response.

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Section: B Modulation Techniques For Three-phase Topologies (2 Level)mentioning

confidence: 99%

Impedance-Source Networks for Electric Power Conversion Part II: Review of Control and Modulation Techniques

Siwakoti

Peng

Blaabjerg

et al. 2015

IEEE Trans. Power Electron.

330

181

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show abstract

“…The Modified Space Vector ZSI PWM technique extends the operating range of the inverter with reduced voltage stresses, especially at high-voltage gain [53,54]. The utilized shoot-through state with evenly distributed active states succeeded in THD and switching losses' reduction.…”

Section: Of 19mentioning

confidence: 99%

“…Modified space vector PWM (MSVPWM) reshapes conventional SVPWM by inserting the shoot-through state with a time (T_ST) inside conventional zero states. The shoot-through state must be distributed around active states to reduce %THD and switching losses, keeping in mind that the active states time is untouchable, as shown in Figure 3g [53,54]. MSVPWM has a wide range of operations with relatively smoother relations and lower stresses compared to SBPWM.…”

Section: Conventional Zsi-pwm Techniquesmentioning

confidence: 99%

Enhanced Performance Modified Discontinuous PWM Technique for Three-Phase Z-Source Inverter

et al. 2020

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Various industrial applications require a voltage conversion stage from DC to AC. Among them, commercial renewable energy systems (RES) need a voltage buck and/or boost stage for islanded/grid connected operation. Despite the excellent performance offered by conventional two-stage converter systems (dc–dc followed by dc–ac stages), the need for a single-stage conversion stage is attracting more interest for cost and size reduction reasons. Although voltage source inverters (VSIs) are voltage buck-only converters, single stage current source inverters (CSIs) can offer voltage boost features, although at the penalty of using a large DC-link inductor. Boost inverters are a good candidate with the demerit of complicated control strategies. The impedance source (Z-source) inverter is a high-performance competitor as it offers voltage buck/boost in addition to a reduced passive component size. Several pulse width modulation (PWM) techniques have been presented in the literature for three-phase Z-source inverters. Various common drawbacks are annotated, especially the non-linear behavior at low modulation indices and the famous trade-off between the operating range and the converter switches’ voltage stress. In this paper, a modified discontinuous PWM technique is proposed for a three-phase z-source inverter offering: (i) smooth voltage gain variation, (ii) a wide operating range, (iii) reduced voltage stress, and (iv) improved total harmonic distortion (THD). Simulation, in addition to experimental results at various operating conditions, validated the proposed PWM technique’s superior performance compared to the conventional PWM techniques.

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“…The most common switching control strategies are the simple boost method [20], maximum boost method [21], maximum constant boost method [22] and space vector method [23]. Some of these control strategies can be compared in terms of the voltage gain [24]. Several modified PWM control techniques for impedance source inverters have been also proposed in the literature.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Review on Main Topologies of Impedance Source Inverter Used in Electric Vehicle Applications

Mande

Trovão

2020

WEVJ

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Power electronics play a fundamental role for electric transportation, renewable energy conversion and many other industrial applications. They have the ability to help achieve high efficiency and performance in power systems. However, traditional inverters such as voltage source and current source inverters present some limitations. Consequently, many research efforts have been focused on developing new power electronics converters suitable for many applications. Compared with the conventional two-stage inverter, Z-source inverter (ZSI) is a single-stage converter with lower design cost and high efficiency. It is a power electronics circuit of which the function is to convert DC input voltage to a symmetrical AC output voltage of desired magnitude and frequency. Recently, ZSIs have been widely used as a replacement for conventional two-stage inverters in the distributed generation systems. Several modifications have been carried out on ZSI to improve its performance and efficiency. This paper reviews the-state-of-art impedance source inverter main topologies and points out their applications for multisource electric vehicles. A concise review of main existing topologies is presented. The basic structural differences, advantages and limitations of each topology are illustrated. From this state-of-the-art review of impedance source inverters, the embedded quasi-Z-source inverter presents one of the promising architectures which can be used in multisource electric vehicles, with better performance and reliability. The utilization of this new topology will open the door to several development axes, with great impact on electric vehicles (EVs).

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A new method for minimizing of voltage stress across devices in Z-source inverter

Cited by 8 publications

References 11 publications

Impedance-Source Networks for Electric Power Conversion Part II: Review of Control and Modulation Techniques

Impedance-Source Networks for Electric Power Conversion Part II: Review of Control and Modulation Techniques

Enhanced Performance Modified Discontinuous PWM Technique for Three-Phase Z-Source Inverter

Comprehensive Review on Main Topologies of Impedance Source Inverter Used in Electric Vehicle Applications

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