Genetic Algorithm for Selective Harmonic Elimination PWM Control

2014 ◽  
pp. 799-809
Author(s):  
Wenyi Zhang ◽  
Xiaodan Meng ◽  
Liao Jiang
Keyword(s):  
Genetic Algorithm ◽  
Pwm Control ◽  
Harmonic Elimination ◽  
Selective Harmonic Elimination

scholarly journals A VSC Transmission System Using Flying Capacitor Multilevel Converters and Selective Harmonic Elimination PWM Control

2006 ◽  
Vol 5 (2) ◽  
Author(s):  
Lie Xu ◽  
Vassilios G. Agelidis
Keyword(s):  
Pulse Width Modulation ◽  
Control Method ◽  
Transmission System ◽  
Voltage Source ◽  
Pwm Control ◽  
Multilevel Converters ◽  
Harmonic Elimination ◽  
Selective Harmonic Elimination ◽  
Small Change ◽  
Current Polarity

A transmission system based on voltage-source three-level flying capacitor (FC) multilevel converters with selective harmonic elimination pulse-width modulation (SHE-PWM) control is presented in this paper. The generation of the switching patterns for each power device is described taking into account the natural balancing of the FC voltages. A new and simple control method for balancing the FC voltages of the FC converter when using SHE-PWM is proposed which is based on the small change of the firing angle according to the load current polarity. Implementation of the SHE-PWM with capacitor voltage balancing is provided. Simulation studies for a 300MW/+-150kV transmission system are presented to confirm the satisfactory performance of the proposed system.

scholarly journals THD Analysis of Novel Envelop with a T type (E-T) Multilevel Inverter with reduced number of switches

2019 ◽  
Vol 8 (3) ◽  
pp. 194-199
Keyword(s):  
Genetic Algorithm ◽  
Power Quality ◽  
Output Voltage ◽  
Good Choice ◽  
Multilevel Inverter ◽  
Multilevel Inverters ◽  
Harmonic Elimination ◽  
Selective Harmonic Elimination ◽  
Different Types ◽  
Optimum Firing

Multilevel inverters are a good choice for medium and low power applications. Multilevel inverters have found a wide place in the market for their good power quality output. This paper proposes a new Envelope with T type Novel Multilevel inverter with unequal sources and with reduced switch count. Working of the circuit is explained. Firing angle calculations are done using simple nested looping technique and later Genetic Algorithm is used to obtain optimum firing angles for Selective Harmonic Elimination technique and improve the THD of the output voltage. Comparison is made between different types of inverters. The proposed inverter can be used for speed control of drives

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