Internal-Model-Principle-Based Specific Harmonics Repetitive Controller for Grid-Connected PWM Inverters

Wenzhou Lu, Jinfei Shen, Yunhu Yang
2016 Mathematical Problems in Engineering  
This paper analyzes the general properties of IMP-based controller and presents an internal-model-principle-based (IMP-based) specific harmonics repetitive control (SHRC) scheme. The proposed SHRC is effective for specificnk±morder harmonics, withn>m≥0andk=0,1,2,.... Using the properties of exponential function, SHRC can also be rewritten into the format of multiple resonant controllers in parallel, where the control gain of SHRC isn/2multiple of that of conventional RC (CRC). Therefore,
more » ... ng SHRC in a stable closed-loop feedback control system, asymptotic disturbance eliminating, or reference tracking for any periodic signal only including these specific harmonic components atn/2times faster error convergence rate compared with CRC can be achieved. Application examples of SHRC controlled three-phase/single-phase grid-connected PWM inverters demonstrate the effectiveness and advantages of the proposed SHRC scheme.
doi:10.1155/2016/9640403 fatcat:hbjjvaugijakfmnbopqxehcr3i