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

• Main Authors: Ahmad Azli, Naziha, Wong, S. N.
• Format: Conference or Workshop Item
• Language: English
• Published: 2005
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utm.my/id/eprint/7538/1/Naziha_Ahmad_Azli_2005_Development_of_a_DSP-based_Fuzzy_P1.pdf; http://eprints.utm.my/id/eprint/7538/; https://dx.doi.org/10.1109/PEDS.2005.1619918
• Institution: Universiti Teknologi Malaysia

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.