An improved SHM-PAM method to meet EN 50160 and CIGRE WG 36-05 voltage harmonic standards using asymmetrical cascaded H-bridge natural sequence multi-level inverter structure
by Samudra Panda; Sourabh Kundu; Subrata Banerjee
International Journal of Power Electronics (IJPELEC), Vol. 18, No. 3, 2023

Abstract: An improved selective-harmonic-minimisation pulse-amplitude-modulation (SHM-PAM) method based on quarter-wave-symmetry (QWS) waveform for a three-phase seven-level asymmetrical CHB natural-sequence-multi-level-inverter (CHBNSMLI) is presented in this article. The proposed SHM-PAM method is capable of keeping the value of the harmonic components of inverter output voltage (up to 25th order) and THD under the specified limit of voltage harmonic standards EN50160/CIGRE WG 36-05. In the proposed strategy, the first and second cell of the typical two-cell asymmetrical CHBNSMLI commutates once and thrice per quarter cycle respectively. The solution of switching positions and per unit voltages of each level is estimated using the particle swarm optimisation (PSO) technique. The performance of the suggested technique is then justified through simulation as well as hardware implementation on an FPGA-controlled asymmetrical CHBNSMLI for different loading conditions. Lastly, the effectiveness of the proposed SHM-PAM method has been established through a comparative study with some existing SHE/SHM methods.

Online publication date: Tue, 29-Aug-2023

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Power Electronics (IJPELEC):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com