Abstract: This paper presents operating performance of a switched-capacitor-based resonant converter (SCRC) using a phase-shift control method. The proposed phase-shift control realizes zero-voltage switching operation, and thus achieves a high-conversion efficiency.
A phase-shifting circuit is a type of electrical circuit that is used to correct an undesirable phase shift in another circuit or to produce a special needed effect. An RC (Resistor-Capacitor) circuit is commonly used for this purpose because the capacitor causes the circuit current to lead the applied voltage. Two common examples of phase-shifting circuits can be seen in Figure. (1).
The principle of phase shift operation in phase-shifting circuits is based on phasors. Before diving into phase-shifting circuits, it is essential to understand AC circuits and their applications. Now, we will learn about phase-shifting circuits, which are often used to correct an undesirable phase shift in a circuit or to produce special needed effects.
The proposed phase-shift control realizes zero-voltage switching operation, and thus achieves a high-conversion efficiency. A theoretical analysis shows that the SCRC can reduce its inductor volume compared with a conventional buck converter when the output voltage range is within 19%–81% of its input voltage.
n the grid caused by bulk powerinjectionImproved system stability and power qualityPhase shifting transformers protect transmission lines and HV equipment from thermal overload, improve transmission system stability and control the power flow betw
In Figure. (1a), the circuit current I leads the applied voltage Vi by some phase angle θ, where 0 < θ < 90o, depending on the values of R and C. The phase shift is given by Notice that the phase shift amount is dependent on the values of R, C, and the operating frequency. If XC = -1/ωC, then the total impedance is Z = R + jXC.