2015
DOI: 10.3390/en8099670
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Phase-Shifted Carrier Pulse Width Modulation Based on Particle Swarm Optimization for Cascaded H-bridge Multilevel Inverters with Unequal DC Voltages

Abstract: High-voltage cascaded H-bridge multilevel (CHBML) inverters usually include many isolated dc voltage sources. Some dc source faults result in a drop in the dc voltage, thereby leading to unequal cell dc voltages. On the other hand, the differences in cell dc source parameters result in unequal dc voltages too. At present, riding through the faults of dc sources and operating under the condition of unequal dc voltages are required to improve the reliability of CHBML inverters. Unfortunately, the conventional ph… Show more

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Cited by 21 publications
(9 citation statements)
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“…The arm voltage is known to be the sum of SM output voltages on the arm. With the CPS-PWM scheme [24], u U j , u Mj , and u Lj can be controlled to…”
Section: Basis Operationmentioning
confidence: 99%
“…The arm voltage is known to be the sum of SM output voltages on the arm. With the CPS-PWM scheme [24], u U j , u Mj , and u Lj can be controlled to…”
Section: Basis Operationmentioning
confidence: 99%
“…Figure 2 shows the diagram of a five-phase voltage source inverter which is called the classic method of direct torque control in this article. There are two major drawbacks to applying inverter: low-frequency voltage harmonics and high torque ripple [5][6][7]. To eliminate these problems, the direct torque control method with a three-phase to five-phase matrix converter ( Figure 3) is introduced [8][9][10].…”
Section: Introductionmentioning
confidence: 99%
“…As shown in Figure 3, there are two common vertexes, named as interface vector 1 and interface vector 2 . If the interface vector is chosen as a starting vector, the three vectors in the same triangle can be applied with two basic switching modes.…”
Section: Switching Path Planningmentioning
confidence: 99%
“…Multilevel inverters have been selected as a preferred power converter topology for high voltage and high power applications [1,2]. They are widely used in medium voltage motor driver [3], high-voltage direct current (HVDC) transmission systems [4], static var generator (SVG) [5], active power filter (APF) [6] and other applications [7,8].…”
Section: Introductionmentioning
confidence: 99%