Title :
High-PF and ultra-low-THD power factor correction controller by sinusoidal-wave synthesis and optimized THD control
Author :
Chih-Wei Chang ; Chia-Lung Ni ; Jen-Chieh Tsai ; Yi-Ting Chen ; Chun-Yen Chen ; Ke-Horng Chen ; Long-Der Chen ; Cheng-Chen Yang
Author_Institution :
Inst. of Electr. Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
The proposed sinusoidal-wave synthesis (SWS) and the optimized THD control (OTC) improve power factor (PF) and total harmonic distortion (THD) over a wide line voltage range. The SWS detects the input line root-mean-square (rms) voltage to generate the digital equivalent code to the OTC for optimizing the THD by tuning the on-time value. Besides, the SWS and the OTC provide a feedforward path to reduce the ripple of the feedback voltage for further improving the THD. Therefore, the PFC converter can keep high PF and low THD over a wide line voltage. Experimental results demonstrate the PF is higher than 0.99 and the THD is 1.7% at VAC of 90-110V by the test circuit fabricated in TSMC 800V UHV process.
Keywords :
control system synthesis; feedback; harmonic distortion; low-power electronics; mean square error methods; power control; power convertors; power factor correction; OTC; PFC converter; SWS; TSMC UHV process; digital equivalent code; feedback voltage; high-PF; input line root-mean-square voltage; on-time value; optimized THD control; power factor improvement; rms voltage; sinusoidal-wave synthesis; total harmonic distortion; ultra-low-power factor correction controller; voltage 800 V; voltage 90 V to 110 V; wide line voltage range; Inductors; Mirrors; Power amplifiers; Power factor correction; Power generation; Total harmonic distortion; Voltage measurement; power factor; sinusoidal-wave synthesis; total harmonic distortion;
Conference_Titel :
Circuits and Systems (ISCAS), 2013 IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4673-5760-9
DOI :
10.1109/ISCAS.2013.6571997
