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

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Wenzhou Lu ◽  
Jinfei Shen ◽  
Yunhu Yang
Keyword(s):  
Internal Model ◽  
Single Phase ◽  
Periodic Signal ◽  
Reference Tracking ◽  
Internal Model Principle ◽  
Control Gain ◽  
Three Phase ◽  
Loop Feedback ◽  
Closed Loop Feedback ◽  
Harmonic Components

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, including 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.

The Design of the Single-Phase Inverter Based on DSP (TMS320F2812)

2014 ◽  
Vol 989-994 ◽  
pp. 3231-3235
Author(s):  
Zhao Xia Zhou ◽  
Jia En Huang
Keyword(s):  
Single Phase ◽  
Closed Loop ◽  
Optical Coupling ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Filter Output ◽  
Low Pass ◽  
Loop Feedback ◽  
Closed Loop Feedback ◽  
Single Phase Inverter

This paper designs a single-phase inverter.Battery as a 12V DC input, and output for the 24V,50 HZ standard AC wave. The load is resistive.The power supply adopts the Boost booster and two full-bridge inverter transform. For the control circuit, the preceding Boost converter using tl494 chip control closed-loop feedback and for the inverter part, adopting the 6N137 to finish the optical coupling isolation.Then,through the DSP (TMS320F2812) to complete the output of SPWM modulation.And the modulated SPWM signal can drive chip IR211 conducting the full bridge inverter. Finally, through a low-pass filter output the standard sine AC inverter power.

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