Pulse discharge of energy storage capacitor

What are the characteristics of a pulse power capacitor?

In pulse power technology, capacitors must maintain good thermal stability and fast discharge capability except for high Wrec and η. Research has shown that Sr 0.7 Bi 0.2 TiO 3 (SBT) exhibits excellent temperature stability due to the good relaxation behavior induced by Bi 3+ doping in SrTiO 3 ceramics [, , ].

How do you calculate pulse charge–discharge performance?

The discharge energy density and t 0.9 are two significant parameters to assess the quality of pulse charge–discharge performance. The discharge energy density (W d) can be calculated by the following equation: (8) W d = ∫ I (t) 2 R d t V where R and V represent the load resistor (200 Ω) and sample volume, respectively.

What materials are used in energy storage capacitors?

The widespread application of dielectric materials in pulse power technologies for example accelerators and electromagnetic pulse weapons has led to their increasing attention in energy storage capacitors . Currently, dielectric materials used for capacitors include ceramic, polymer, glass-ceramic, and ceramic-polymer composite [2, 3].

Which parameter is used to evaluate pulse energy storage properties?

The discharge speed is an important parameter to evaluate the pulse energy storage properties, where t 0.9 is usually used indicating the time needed to release 90% of the discharge energy density. The value of t 0.9 increases from 280 ns at x = 0 to 433 ns at x = 0.04, then decreases to 157 ns at x = 0.1.

Is NN-sbtz-0.01sm a potential energy storage capacitor?

In addition, the NN-SBTZ-0.01Sm ceramic also had a high PD (21.5 MW/cm 3), a high CD (268 A/cm 2), and an ultrafast discharge rate (35 ns). According to the results above, the NN-SBTZ-0.01Sm ceramic is a potential energy storage capacitor.

Are pulse charge-discharge properties a criterion for reliable energy storage applications?

The pulse charge–discharge properties are crucial criterion to evaluate reliability of materials for practical energy storage application. Fig. S5 and Fig. S6 show the overdamped and underdamped discharge voltage curves of the BLLMT x ceramics at different electric fields, respectively.