Supercapacitor-Based Long Time-Constant Circuits: A Unique Design Opportunity for New Power Electronic Circuit Topologies

Supercapacitor assisted surge absorber technique: high performance transient surge protectors for consumer electronics

“…Typical arrangement of a commercial surge protector deigned for both common and differential mode surge absorption. theoretical foundations related to these encouraging test results which led to the development of the supercapacitor assisted surge absorber (SCASA) technique [8], [9], which culminated multiple international patents. Supercapacitors can be simply summarised as a device family where you could achieve over one million times larger capacitance for the same canister size as electrolytic or film capacitors.…”

“…Supercapacitors can be simply summarised as a device family where you could achieve over one million times larger capacitance for the same canister size as electrolytic or film capacitors. New commercial devices come in three different variations, namely (i) symmetrical electrical double layer capacitors (ii) hybrid devices where one electrode is similar to electrodes used in Li rechargeable batteries, and (iii) pseudo-capacitance based [9]. These commercial single cell devices are in the range of 1 F to over 70,000 F and in the SCASA technique, symmetrical double layer capacitances in the range of 1 to 100 F are used, given their very low cost [10].…”

Supercapacitor assisted surge absorber (SCASA) technique: selection of magnetic components based on permeance

“…A. Supercapacitor Assisted Surge Absorber Technique Supercapacitors (SCs) can be described as a family of very large capacitors where the capacitance is almost six to seven order larger than a traditional electrolytic or a film capacitor of the same canister size [6]. These devices come in capacitance values of 1 f to 70,000 F in single cell devices, where their DC rated voltage can be between 2.5 V to 4.0 V. Symmetrical SCs in the range of 1 F to 100 F are pretty small in size and they are only 15 to 20 % more expensive than a similar can size traditional capacitor [7].…”

“…Fig. 4 depicts the patented technique [15] now known as SCASA, within the family of SC assisted (SCA) techniques [6]- [13].…”

“…Fig.3: Effect of a supercapacitor in an R-C loop compared to a capacitor (a) waveforms (b) energy dissipated/ energy absorbed (ratio) for different capacitor values[6] …”