Millivolt‐Level Stable Voltage Output of Triboelectric Nanogenerator Under Random Excitation by Double Limiting

Abstract

Against the backdrop of a world energy crisis, triboelectric nanogenerator (TENG) is considered to be a practical solution that could harvest and use different types of mechanical energy. This study fabricates a variable rotor TENG combined with double limiting Zener aspectant diodes (ZAD) for the harvesting of impact energy and stable voltage output. And double limits are used at both ends of the load. The system has two independent rotor generating units. In a small impact, one generating unit is easy to start up; in a strong impact, two generating units operate to output more energy. This article presents a power management circuit design, which mainly comprises a rectifying part and voltage stabilizing part. In the operation of one generating unit, the voltage is stabilized at 3.35 V when using a single Zener diode, and at 3.95 V when using the ZAD circuit. In the simultaneous operation of two generating units, the voltage is stabilized at 4.45 V, ripple coefficient of 1.8%, and ripple voltage is 80 mV at millivolt‐level when using the ZAD circuit. This article presents the prospects of stabilizing the output voltage of the TENG under random excitation in the harvesting of impact energy.

Recent Advances in Triboelectric Nanogenerators: From Technological Progress to Commercial Applications

“…In this section, we review various types of rationally designed mechanical systems with the TENGs integrated with the mechanical elements for the effective generation of electrical energy. − Due to the simplicity of the working principle of tribo-electrification, which is based on the contact-separation of dissimilar materials as mentioned above, the TENG can be created in a variety of ways by employing various mechanical elements. − In this regard, the mechanical systems enable the TENG to convert various mechanical movements that are difficult-to-harvest around us into easy-to-harvest forms for the TENG. Therefore, this review focus on the motion transformation of the mechanical movements to fulfill the intended purpose in the various mechanical TENG systems.…”

Self-switching circuit of TENG for energy storage and power management in harvesting wind energy

“…At this point, it is extremely important and urgent to convert mechanical energy from the environment into electricity (Chen et al, 2022;Tang et al, 2014;Wang et al, 2017). In 2012, academician Wang's group first proposed a triboelectric nanogenerator (TENG) based on frictional initiation and electrostatic induction coupling, which can convert mechanical energy in the environment into a high-voltage and low-current electrical signal (Fu et al, 2021;Graham et al, 2021;Wang and Wang, 2019;Yu et al, 2022aYu et al, , 2022b. TENG is simple to manufacture, lightweight, and cost effective, which make it play an important role in tiny sensor systems and internet connected systems (Xu et al, 2021).…”