A Hybrid PWM Applied to High-Power Three-Level Inverter-Fed Induction-Motor Drives

Zhang, Yongchang; Zhao, Zhengming; Zhu, Jun

doi:10.1109/tie.2010.2090836

Cited by 127 publications

(50 citation statements)

References 30 publications

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“…According to (6), it can be noted that the change rates of the active and reactive power are related to the d-axis and q-axis components of the voltage vector, respectively. The influence function of the active power ξ, the influence function of the reactive power μ, and the parameters m 1 and m 2 are defined as:…”

Section: A Influence Of Space Voltage Vectors On Active and Reactivementioning

confidence: 99%

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A New Direct Power Control Strategy for NPC Three-Level Voltage Source Rectifiers Using a Novel Vector Influence Table Method

Xia¹,

Xu²,

Zhao³

2015

Journal of Power Electronics

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This paper proposes a novel direct power control (DPC) strategy for neutral-point-clamped (NPC) three-level rectifiers, to directly control the active power, the reactive power and the neutral point potential of the rectifiers by referring to three pre-calculated vector influence tables and minimizing an objective function. In the three vector influence tables, the influences of different voltage vectors on the active power, the reactive power and the neutral-point potential are shown explicitly. A conceptual description and control algorithm of the proposed controller are presented in this paper. Then, numerical simulations and experiments are carried out to validate the proposed method. Both the simulation and experimental results show that good performances during both the steady-state and transient operating conditions are achieved. As a result, the proposed strategy has been proven to be effective for NPC three-level rectifiers.

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Section: A Influence Of Space Voltage Vectors On Active and Reactivementioning

confidence: 99%

“…This is due to the fact that it has a number of advantages such as low harmonic distortion of the input currents, low switching voltage stress and low du/dt [1]- [6].…”

Section: Introductionmentioning

confidence: 99%

A New Direct Power Control Strategy for NPC Three-Level Voltage Source Rectifiers Using a Novel Vector Influence Table Method

Xia¹,

Xu²,

Zhao³

2015

Journal of Power Electronics

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show abstract

Section: Introductionmentioning

confidence: 99%

“…As an effective multilevel implementation, besides the characters of fewer power switching devices, lower input current harmonics, better sinusoidal and high adjustable power factor, diode clamped threelevel inverter also has the advantages of bi-directional energy transfer, lower switching frequency and higher system efficiency, which can satisfy the requirements of higher voltage grades, higher power and lower harmonic pollution trend of inverter [10]. The operation and the control of three phase diode clamped three-level inverter have been researched during the last decade and both control and modulation methods have been presented in [11][12].However, large-scale application of multilevel topology is subjected to the unbalance voltages of capacitors in DC-bus and the turn-off over-voltage for power switching devices [13][14][15], and diode clamped three-level inverter is no exception [16]. To solve the above problems, a variety of ideas have been put forward in many research papers [17][18][19].…”

mentioning

confidence: 99%

Optimal Modulation Algorithm for Hybrid Clamped Three-Level Inverter

Liu

Tan

2016

TELKOMNIKA

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The principle of a three phase hybrid clamped three-level inverter was presented. Taking Keywords: Optimization method, Hybrid clamped inverter, Pulse width modulation, DC-voltage balanceCopyright © 2016 Universitas Ahmad Dahlan. All rights reserved. IntroductionNowadays, in order to meet the demands of the high-voltage grades and high-power inverter, an important trend in power electronic has been the replacement of the traditional twolevel inverter by multilevel inverter [1][2][3]. With the development of power electronic technology, in [4][5][6][7], multilevel technology has been widely studied in the high-voltage and high-power system, grid-connected wind power system, active power filters, and many other fields. Currently, there is a large variety of such multilevel topologies available [8][9]. However, the three phase diode clamped three-level inverter is the most widely used topology. As an effective multilevel implementation, besides the characters of fewer power switching devices, lower input current harmonics, better sinusoidal and high adjustable power factor, diode clamped threelevel inverter also has the advantages of bi-directional energy transfer, lower switching frequency and higher system efficiency, which can satisfy the requirements of higher voltage grades, higher power and lower harmonic pollution trend of inverter [10]. The operation and the control of three phase diode clamped three-level inverter have been researched during the last decade and both control and modulation methods have been presented in [11][12].However, large-scale application of multilevel topology is subjected to the unbalance voltages of capacitors in DC-bus and the turn-off over-voltage for power switching devices [13][14][15], and diode clamped three-level inverter is no exception [16]. To solve the above problems, a variety of ideas have been put forward in many research papers [17][18][19]. Among these, the topology proposed by Korean scholar Young-Seok Kim in 1993, called the hybrid clamped three-level inverter (HCTLI) has the additional benefits of increased controlled switch states in addition to the general the benefits of diode clamped three-level inverter. Compared to three phased diode clamped three-level inverter, three clamped capacitors are added to three clamped legs. Thus, it can restrain the fluctuations of DC-bus neutral potential, realize the bidirectional current flow and restrain the over-voltages of the power switching devices by charging or discharging clamped capacitors and feasible modulation algorithms. Thereby, due to the opportunities of competitive advantages, HCTLI is generally considered attractive and applied as an inverter for the DC-AC converter. The research of HCTLI has focused so far on control schemes, fewer on the pulse width modulation (PWM) algorithms. Traditionally, in order to restrain the problem of DC-bus capacitor voltages unbalance, these modulation algorithms

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“…However, with the additional hardware circuits, the volume and cost of the system are increased while the efficiency and the reliability of the system are reduced. Therefore, improving the modulation performance is a better way to restrain the NPP fluctuation as this removes the need for extra converters [10][11][12][13].…”

mentioning

confidence: 99%

A Method for the Suppression of Fluctuations in the Neutral-Point Potential of a Three-Level NPC Inverter With a Capacitor-Voltage Loop

Zhang

Jing

et al. 2017

IEEE Trans. Power Electron.

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A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. -Reg-2015-Reg- -09-1497 For more information, please contact eprints@nottingham.ac.uk

show abstract

A Hybrid PWM Applied to High-Power Three-Level Inverter-Fed Induction-Motor Drives

Cited by 127 publications

References 30 publications

A New Direct Power Control Strategy for NPC Three-Level Voltage Source Rectifiers Using a Novel Vector Influence Table Method

A New Direct Power Control Strategy for NPC Three-Level Voltage Source Rectifiers Using a Novel Vector Influence Table Method

Optimal Modulation Algorithm for Hybrid Clamped Three-Level Inverter

A Method for the Suppression of Fluctuations in the Neutral-Point Potential of a Three-Level NPC Inverter With a Capacitor-Voltage Loop

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