Topology for hybrid multilevel inverter

Lai, Yen-Shin; Shyu, Fu-San

doi:10.1049/ip-epa:20020480

Cited by 172 publications

(79 citation statements)

References 11 publications

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“…This comparison is specially focusing on switching devices located at output terminal. To compare the blocking voltage on switching devices, a known factor MVR (maximum voltage ratio) is used as the performance index as follows [19,24].…”

Section: Simulations and Experiments Resultsmentioning

confidence: 99%

Five-Level PWM Inverter Using Series and Parallel Alternative Connection of Batteries

Park¹,

Kang²

2017

Journal of Electrical Engineering and Technology

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-This paper presents a five-level PWM inverter using series and parallel connection of voltage sources. The alternative connection is done by an auxiliary circuit consisted of a switch, three diodes, and two batteries. The auxiliary circuit is located between input dc voltage source and H-bridge cell. Thanks to the auxiliary circuit, the proposed inverter synthesizes five-level output voltage in an effective way. Topologically both batteries are charged and discharged in the same rate, so it does not need to apply battery voltage balancing control method. Theoretical analysis of the proposed inverter is verified by computer-aided simulation and experiment based on a prototype of 1kW.

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Section: Simulations and Experiments Resultsmentioning

confidence: 99%

Five-Level PWM Inverter Using Series and Parallel Alternative Connection of Batteries

Park¹,

Kang²

2017

Journal of Electrical Engineering and Technology

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“…The DC voltage sources are proposed to be chosen according to a geometric progression with a factor of two (Binary) or three (Trinary) in cascaded H-bridge inverters [8,[11][12][13][14]…”

Section: Operational Principle Of the Cascaded Sub-multilevel Cellsmentioning

confidence: 99%

“…The cascaded H-bridge can operate as symmetric or asymmetric converter. In asymmetric multilevel converters the DC voltage sources are proposed to be chosen as different value according to different methods [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Asymmetric Cascaded Multi-level Inverter: A Solution to Obtain High Number of Voltage Levels

Banaei¹,

Salary²

2013

Journal of Electrical Engineering and Technology

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-Multilevel inverters produce a staircase output voltage from DC voltage sources. Requiring great number of semiconductor switches is main disadvantage of multilevel inverters. The multilevel inverters can be divided in two groups: symmetric and asymmetric converters. The asymmetric multilevel inverters provide a large number of output steps without increasing the number of DC voltage sources and components. In this paper, a novel topology for multilevel converters is proposed using cascaded sub-multilevel Cells. This sub-multilevel converters can produce five levels of voltage. Four algorithms for determining the DC voltage sources magnitudes have been presented. Finally, in order to verify the theoretical issues, simulation is presented.

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“…This might be seen as giving up of one of the main features of multilevel inverters which is the ability to construct an inverter with a voltage rating that is a multiple of the switching devices ratings. However, the design of hybrid inverters relies on a fundamental feature of semiconductor switching devices which is a tradeoff between the device switching frequency and the voltage ratings [8], [9]. Therefore, the main stage should be restricted to a low switching frequency, preferably the fundamental frequency, while a low voltage stage can be operated at the desired carrier frequency.…”

Section: Introductionmentioning

confidence: 99%

Multistage Inverters Control Using Surface Hysteresis Comparators

Menshawi¹,

Mekhilef²

2013

Journal of Power Electronics

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An alternative technique to control multilevel inverters with vector approximations has been presented. The innovative control method utilizes specially designed two-dimensional hysteresis comparators to simplify the implementation and improve the resultant waveform. The multistage inverter designed with maximum number of levels is operated in such a way to approximate the reference voltage vector by exploiting the large number of multilevel inverter vectors. A three-stage inverter with the main high voltage stage made of three phase, six-switch and singly-fed inverter is considered for application to the proposed design. The proposed control concept is to maintain a higher voltage stage state as long as it can lead to a target vector. High and medium voltage stages controllers are based on surface hysteresis comparators to hold the switching state or to perform the necessary change to achieve its reference voltage with minimal switching losses. The low voltage stage controller is designed to approximate the target reference voltage to the nearest inverter vector using the nearest integer rounding and adjustment comparators. Model simulation and prototype test results show that the proposed control technique clearly outperforms the previous control methods.

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Topology for hybrid multilevel inverter

Cited by 172 publications

References 11 publications

Five-Level PWM Inverter Using Series and Parallel Alternative Connection of Batteries

Five-Level PWM Inverter Using Series and Parallel Alternative Connection of Batteries

Asymmetric Cascaded Multi-level Inverter: A Solution to Obtain High Number of Voltage Levels

Multistage Inverters Control Using Surface Hysteresis Comparators

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