The Study on DC Capacitor Parameter Determination in Active Power Filter

Wu, Fuzhuan; Sheng, Ping; Wang, Binbin

doi:10.1016/j.phpro.2012.02.072

Cited by 2 publications

(3 citation statements)

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“…Since DC voltage efficiency of FSTP topology is just half that of the SSTP [9], hence, DC voltage level in FSTP topology should be twice that of SSTP so as to achieve the same output. If the source voltage fluctuations as well as voltage drops across the inductor are taken into account, the DC side voltage must be even higher, that is, the FSTP topology is suitable for medium and low voltage applications.…”

Section: Mathematical Model Of Fstp Shunt Apfmentioning

confidence: 99%

“…The DC bus capacitors should be large enough to limit the vibration of DC bus voltage [9, 23]. The DC bus capacitors should be

C_{1} = C_{2} \geq 2 k \frac{S T_{normalc}}{m false(1 + m false) u_{dc}^{2}} = 43.5 μ normalF

where S is the APF capacity (1 kVA), m is the DC voltage fluctuation rate (2–5%), T c is the DC bus control cycle (1 ms), k is the redundancy coefficient (10).…”

Section: Vppwm Performance Studiesmentioning

confidence: 99%

“…Output inductor selection is a compromise of current ripple demand and current tracking ability. Large inductor means small current ripple and poor current tracking ability [9, 24]. The output inductor should be in the following scope

\frac{false(6 e_{m} - u_{dc} false) T_{normals}}{6 normal△ i_{\max}} \leq L \leq \frac{u_{dc}}{2 I_{m} ω}

where T s is the switching period, Δ i max is the maximum harmonic current ripple (20% I m ), I m is the reference current amplitude (9 A), and ω is the AC output angular speed (314 rad/s).…”

Section: Vppwm Performance Studiesmentioning

confidence: 99%

See 2 more Smart Citations

Variable parameter pulse width modulation‐based current tracking technology applied to four‐switch three‐phase shunt active power filter

Tan

Wang

et al. 2013

IET Power Electronics

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A novel configuration is proposed with a y/y step-up transformer adding to AC side of the four-switch three-phase (FSTP) active power filter (APF), so as to improve the utilisation of DC voltage and further widen the voltage range of FSTP APF. To ameliorate the current tracking performance of the FSTP inverter, a variable parameter pulse width modulation (VPPWM) approach is presented. In the proposed VPPWM method, the triangular wave is not fixed but derived by integration of reference current error signals. A pulse width coefficient T is also adopted in VPPWM together with the parameter k, so as to make the APF current tracking width adjustable and the resultant over-high switch frequency issue is effectively compromised. The principle and implementation of the VPPWM approach are elucidated in detail, and the validity is demonstrated by simulation studies. The simulation results are compared with that of the proportional-integral control triangular wave comparison approach and the current hysteresis tracking approach, which indicates that the VPPWM methodology shows superior performance in response speed and accuracy to the other ones. 2 Mathematical model of FSTP shunt APF Since DC voltage efficiency of FSTP topology is just half that of the SSTP [9], hence, DC voltage level in FSTP topology should be twice that of SSTP so as to achieve the same output. If the source voltage fluctuations as well www.ietdl.org

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Section: Mathematical Model Of Fstp Shunt Apfmentioning

confidence: 99%

“…The DC bus capacitors should be large enough to limit the vibration of DC bus voltage [9, 23]. The DC bus capacitors should be

C_{1} = C_{2} \geq 2 k \frac{S T_{normalc}}{m false(1 + m false) u_{dc}^{2}} = 43.5 μ normalF

where S is the APF capacity (1 kVA), m is the DC voltage fluctuation rate (2–5%), T c is the DC bus control cycle (1 ms), k is the redundancy coefficient (10).…”

Section: Vppwm Performance Studiesmentioning

confidence: 99%

\frac{false(6 e_{m} - u_{dc} false) T_{normals}}{6 normal△ i_{\max}} \leq L \leq \frac{u_{dc}}{2 I_{m} ω}

where T s is the switching period, Δ i max is the maximum harmonic current ripple (20% I m ), I m is the reference current amplitude (9 A), and ω is the AC output angular speed (314 rad/s).…”