A Cascade Multilevel Inverter Using a Single DC Power Source

Zhang, Du; Tolbert, Leon M.; Chiasson, John; Ozpineci, Burak

doi:10.1109/apec.2006.1620573

Cited by 119 publications

(60 citation statements)

References 12 publications

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“…Similar methods have also been proposed by Veenstar and Rufer [8] [9]. The approach here is very similar to that of Corzine et al [6] and Du et al [7] with the important exception that only a single standard 3-leg inverter is required as the power source (one leg for each phase) for the three phase multilevel inverter. This topology was proposed by Özpineci [10].…”

Section: Introductionsupporting

confidence: 55%

“…A method was given to transfer power from the DC power source to the capacitor in order to regulate the capacitor voltage. A similar approach was later (but independently) proposed by Du et al [7]. These approaches required a DC power source for each phase.…”

Section: Introductionmentioning

confidence: 98%

“…These conditions can be rewritten as 0 < ϕ < θ 1 ϕ > cos −1 (1/m) Figure 13 is a plot of θ 1 and θ 2 in degrees versus m (the modulation index is m/2). For any given value of m and ϕ, the values of θ 1 and θ 2 are found via Figure 13 and thus whether or not the capacitor voltage can be regulated is straightforwardly checked using the conditions (7). What these conditions say is, for any given value of m in the interval 0.6 ≤ m ≤ 1.909 (i.e., where conditions (2) have a solution), the capacitor voltage can be regulated provided the power factor angle is large enough.…”

Section: Capacitor Voltage Regulation As a Function Of M And ϕmentioning

confidence: 99%

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A Five-Level Cascade Multilever Invertor Three-Phase Motor Drive Using a Single DC Source

Chiasson¹

2006

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A method is presented showing that a 5-level cascade multilevel inverter for a three-phase permanent magnet sychronous motor drive can be implemented using only a single DC link to supply a standard 3-leg inverter along with three full H-bridges supplied by capacitors.It is shown that the capacitor voltages can be regulated while achieving an output voltage waveform that is 20% greater than that obained using the standard 3-leg inverter alone.Finally conditions are given in terms of the power factor and modulation index that determine when the capacitor voltage can regulated.

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Section: Introductionsupporting

confidence: 55%

Section: Introductionmentioning

confidence: 98%

Section: Capacitor Voltage Regulation As a Function Of M And ϕmentioning

confidence: 99%

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A Five-Level Cascade Multilever Invertor Three-Phase Motor Drive Using a Single DC Source

Chiasson¹

2006

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“…The Z source network capacitor voltage is determined by ----- (2) Here is less than , this representing a high Z source capacitor voltage stress. The z source network inductor current equals the average input current.…”

Section: Z Source Designmentioning

confidence: 99%

Bridge Less Z Source Network Fed Single Phase Five Level Inverter With Dc-Dc Converter Using Soft Switching Techniques

2017

IJMTER

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Abstract-In this project the bridge less Z-source converter is introduced to power factor correction (PFC) applications. The concept is demonstrated through a wireless charging, namely Z-source resonant converter (ZSRC). The ZVS and ZCS operation will reduce the switching losses. Due to the Z-source network (ZSN), the ZSRC inherently performs PFC and regulate the system output voltage simultaneously, without adding extra semiconductor devices and control circuitry to the conventional WPT system such as conventional PFC converters do. In other words, the ZSN can be categorized as a family of the single stage PFC converters. In addition, the ZSN is suitable for high power applications since it is immune to shoot-through states, which increases reliability and adds a boost feature to the system. Simulations, and experimental results based on a prototype are presented to validate the analysis, and demonstrate the effectiveness of the ZSN in the PFC of the WPT system. The single phase five level inverter ill reduce the THD. The hardware is implemented by using DSPIC30F2010 controller.

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“…Three main topologies for multilevel inverter are used. The first structure is known as the neutral-point-clamped (NPC) [7], the second as the flying capacitor (FC) [8] and the third as the cascaded H-bridge with separate DC sources [9]. They are characterized by many features such as low total harmonic distortion (THD) of generated output voltage, reduced size of the filter and increased the system efficiency [10].…”

mentioning

confidence: 99%

Comparison Study and Simulation of the Main Multilevel Inverter Topologies for Different Output Voltage Levels

Benioub¹,

Adnane²,

Itaka³

2017

ijeei

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This paper discusses the difference between the three fundamental types of multilevel inverter (MLI) topologies, which are the neutral-point-clamped, the flying capacitors and the cascaded H-bridges. The sinusoidal pulse width modulation technique was used to simulate the output voltages and currents of the MLI inverters. The total harmonic distortion (THD) was estimated for each topology and each voltage level. Moreover, the simulation results indicate that the cascaded structure exhibited a lower THD value even when increasing the number of the output voltage. Furthermore, a new key parameter was defined as cost efficiency factor and used to compare the three topologies. Evaluation results of this factor indicate that the cascaded structure was the most advantages as it reduces stress effect on the inverter switches by eliminating the power diodes and capacitors.Keywords: Multilevel Inverter, Sinusoidal Pulse-width modulation, Cost efficiency IntroductionThe fast growth of PV power application industry requires the development of new technologies to maximize the energy yield of the PV systems [1]. This technology concerns the electrical power operation control and transfer in between the PV sources and the customers, to keep the supply of the electric power in a way to match the international standard requirement for power supply [2]. One of the weak points of the PV systems is the incapability conversion from the DC voltage to the AC voltage before connecting to the power network [3]. This conversion is performed by inverters, which are used in power system application and uninterrupted power supplies industries [4]. Improvement of the output voltage required an appropriate control of the waveform on the inverter to reduce its respective harmonic and electromagnetic effect by the diminution of switching operations and hence the filter size [5]. The limitations of the conventional inverters in the case of power or harmonic effect lead to the usage of the multilevel inverter (MLI) technology which promises some advantages over the conventional inverter especially for high power applications [6]. Three main topologies for multilevel inverter are used. The first structure is known as the neutral-point-clamped (NPC) [7], the second as the flying capacitor (FC) [8] and the third as the cascaded H-bridge with separate DC sources [9]. They are characterized by many features such as low total harmonic distortion (THD) of generated output voltage, reduced size of the filter and increased the system efficiency [10]. Thus, aspect lead the MLI topologies to find their application in PV system on the low cost and high performance [11]. New combined topology have been reported, such as three-phase MMLI, where the authors developed to reduce the components number and improve the output voltage level [12]. Moreover, the MLDCL topology which is based on cascaded H-bridge topology connected with half H-bridges cells in a series configuration in purpose to reduce the components number. However, this topology shows a hi...

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A Cascade Multilevel Inverter Using a Single DC Power Source

Cited by 119 publications

References 12 publications

A Five-Level Cascade Multilever Invertor Three-Phase Motor Drive Using a Single DC Source

A Five-Level Cascade Multilever Invertor Three-Phase Motor Drive Using a Single DC Source

Bridge Less Z Source Network Fed Single Phase Five Level Inverter With Dc-Dc Converter Using Soft Switching Techniques

Comparison Study and Simulation of the Main Multilevel Inverter Topologies for Different Output Voltage Levels

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