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Development of a DSP-based fuzzy PI controller for an online optimal PWM control scheme for a multilevel inverter

Ahmad Azli, Naziha and Wong, S.N. (2005) Development of a DSP-based fuzzy PI controller for an online optimal PWM control scheme for a multilevel inverter. In: Power Electronics and Drives Systems, 2005. PEDS 2005. International Conference, 28-01 Nov 2005, Kuala Lumpur, Malaysia.

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Abstract

Previous work has presented the incorporation of a non conventional inverter topology known as multilevel inverter with an optimal PWM based control scheme for high voltage AC power supply applications. A Fuzzy Proportional Integral Controller (FPIC) takes a role in the control scheme in providing stronger control action for a large voltage error and a smoother control action for a small voltage error in the multilevel inverter output. This in turn ensures that high quality output voltage at a fixed frequency is always maintained on the inverter output while the transient response improved regardless of the loading conditions. This paper focuses mainly on the FPIC and its implementation using a digital signal processor (DSP) as part of the hardware implementation of the control scheme. A test conducted on the DSP-based FPIC operation shows response that is in good agreement to that obtained from a simulation study conducted using MATLAB/Simulink.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:DSP, fuzzy PI, multilevel inverter, optimal PWM
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:7538
Deposited By: Norhafizah Hussin
Deposited On:08 Jan 2009 05:04
Last Modified:01 Jun 2010 15:53

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