Switching Frequency Regulation for FCS-MPC Based on a Period Control Approach

One of the main drawbacks with the use of finite control set model predictive control (FCS-MPC) in power converters is the variable switching frequency. When not taken into consideration, it can vary randomly depending mainly on the operating point of the system and the sampling time. This will prod...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2018-07, Vol.65 (7), p.5764-5773
Main Authors: Aguirre, Matias, Kouro, Samir, Rojas, Christian A., Rodriguez, Jose, Leon, Jose I.
Format: Article
Language:English
Subjects:
Algorithms
Commutation
Computer simulation
Cost function
Current distribution
Electric potential
Finite control set (FCS)
fixed switching frequency
model predictive control (MPC)
Modulation
Power converters
Predictive control
Predictive models
Pulse duration modulation
pulse width modulation (PWM)
Switches
Switching
Switching frequency
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:One of the main drawbacks with the use of finite control set model predictive control (FCS-MPC) in power converters is the variable switching frequency. When not taken into consideration, it can vary randomly depending mainly on the operating point of the system and the sampling time. This will produce a wide distributed voltage and current spectrum, causing audible noise, resonances, and poor steady-state behavior. To address this issue, a new algorithm, based on the control of the switching period within the cost function, is proposed in this paper. The algorithm shows to be very effective in achieving a regular commutation pattern, similar to pulse width modulation (PWM) techniques, which is evidenced even by similarities in the sideband harmonics generated in the voltage spectrum. The algorithm is easy to design and implement, demanding very low computation power, and enables a combination of the advantages of FCS-MPC with the benefits of a PWM-like power quality. Simulations and experimental results are presented to validate the proposed method, which are compared to previously reported FCS-MPC techniques dealing with the same challenge.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2017.2777385