Active Capacitors with Ripple Cancellation Control for AC-DC Converter Applications
Journal
IEEE Access
Journal Volume
9
Pages
103937-103949
Date Issued
2021
Author(s)
Abstract
Active capacitors with long lifetime film capacitors can be adopted to replace short lifetime electrolytic capacitors to improve the reliability of the power converter. However, the conventional active capacitor suffers from the complicated control method or the need for an expensive current sensor. Based on the derived mathematical equations, a novel Ripple Cancellation Control (RCC) method for the active capacitor is proposed. The proposed RCC method is simple and can be easily realized by using analog circuits. Also, it can be applied to active capacitors implemented by different circuit topologies. Besides, a new approach for developing the mathematical model of the active capacitors implemented by different circuit topologies are also proposed. The energy storage capability and the impedance analysis by using the developed mathematical model are presented to verify the performance of the active capacitors with the proposed RCC method. Computer simulations and the hardware results are presented to validate the accuracy of the mathematical model as well as the performance of the proposed RCC method. ? 2013 IEEE.
Subjects
Active capacitors
energy storage capability
lifetime
ripple cancellation control
Computer hardware
Electric inverters
Electric network topology
Energy storage
Rectifying circuits
Topology
Ac-dc converters
Control methods
Current sensors
Impedance analysis
Mathematical equations
New approaches
Ripple cancellation
Storage capability
Electrolytic capacitors
SDGs
Type
journal article