Study of the Power Factor Correctors with fast output-voltage feedback loop

2008 ◽  
Author(s):  
Javier Sebastian ◽  
Diego G. Lamar ◽  
Manuel Arias ◽  
Miguel Rodriguez ◽  
Alberto Rodriguez
Keyword(s):  
Power Factor ◽  
Output Voltage ◽  
Feedback Loop ◽  
Voltage Feedback

scholarly journals A novel filter for three-phase power factor correction voltage feedback loop under heavy DC voltage ripple condition

2021 ◽  
Vol 70 (9&10) ◽  
pp. 156
Author(s):  
Long Yingwen ◽  
Sun Yuhong
Keyword(s):  
Power Factor ◽  
Feedback Loop ◽  
Power Factor Correction ◽  
Input Current ◽  
Current Feedback ◽  
Dc Voltage ◽  
Voltage Ripple ◽  
Three Phase ◽  
Bus Voltage ◽  
Voltage Feedback

THD and the amplitude balance of three-phase input current are an important index for the performance of three-phase power factor correction (PFC). In general, when the hardware and the load of three-phase PFC are confirmed, the THD and amplitude balance of three-phase input current mainly depend on voltage and current feedback loop of PFC. Firstly, this paper designs the traditional voltage and current feedback loop for three-phase PFC according to traditional small signal theory. Secondly, this paper studies the designing difficulty of large dc voltage ripple for PFC voltage controller and puts forward a new dc voltage ripple filter which can eliminate the ac component of sampling dc bus voltage. Finally, this paper proposes a novel filter with dc voltage ripple frequency adaption function to copy with the frequency variety of the voltage ripple caused by the change of the output inverter frequency. With the help of the proposed algorithm the distortion of three-phase 3 input current reference decreases rapidly, therefore, the low THD and good amplitude balance of three phase input current will be achieved.

An Online No-Break With Power Factor Correction and Output Voltage Stabilization

2005 ◽  
Vol 20 (5) ◽  
pp. 1109-1117 ◽  
Author(s):  
V.M. Pacheco ◽  
L.C. de Freitas ◽  
J.B. Vieira ◽  
A.A. Pereira ◽  
E.A.A. Coelho ◽  
...  
Keyword(s):  
Power Factor ◽  
Output Voltage ◽  
Power Factor Correction ◽  
Voltage Stabilization

scholarly journals Dynamic range expansion of active pixel sensor with output voltage feedback

2009 ◽  
Vol 18 (4) ◽  
pp. 274-279 ◽  
Author(s):  
Min-Woong Seo ◽  
Sang-Ho Seo ◽  
Jae-Sung Kong ◽  
Jang-Kyoo Shin
Keyword(s):  
Range Expansion ◽  
Output Voltage ◽  
Dynamic Range ◽  
Active Pixel Sensor ◽  
Active Pixel ◽  
Voltage Feedback

The Three-Level Sine-Wave Inverter with Power Factor Correction (PFC)

2015 ◽  
Vol 781 ◽  
pp. 402-405
Author(s):  
Napat Krachangchaeng ◽  
Sakorn Po-Ngam
Keyword(s):  
Power Factor ◽  
Output Voltage ◽  
Power Factor Correction ◽  
Sine Wave ◽  
Input Power ◽  
Small Current ◽  
Uninterruptible Power Supply ◽  
Current Harmonics ◽  
Electric Device ◽  
Uninterruptible Power

Nowadays, the uninterruptible power supply (UPS) is important in reliability for electric device. The UPS need high quality electricity. Therefore, the simulation of the three-level sine-wave inverter with power factor correction (PFC) is proposed in this paper. Moreover, the circuit’s guidelines of the active PFC controller in the active PFC and the sinusoidal output voltage are also presented. Validity of the proposed the three-level sine-wave inverter with the active PFC is confirmed by simulation. The simulation results show the very small current harmonics, the input power factor most nearly unity and constant output voltage when the suddenly step-load changed.

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