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.

Research on power management is ongoing and plays an important role in the applications of TENGs. In particular, the switch is applied for the instantaneous release of accumulated energy to increase the output performance. With this solution, the output impedance of the TENG could also be reduced. The TENG with the mechanical switch can achieve an instantaneous release of continuous energy. [8] However, metal contacts are not conducive to integration with the circuit which increases the complexity of the structure. [9] For electronic switches, [10] actuation control is generally achieved by external chemical battery power, which is contrary to the original intention of high-entropy energy harvesting with TENGs. In addition, spark switches have the advantages of a high switching speed and high charge transfer efficiency, however, the impact of the breakdown medium, unstable output performance, and low controllability also limit their application. [11] Therefore, there is an urgent need for a general switch with autonomous controllability, no external chemical power required, high switching speed, and reliability in the TENG field. [12] In this work, we propose an energy-TENG and switch-TENG coupling strategy for boosting the power output of TENGs. A self-triggering switch controlled by TENG is proposed, which is achieved by the resistive load dividing characteristics of the inherent TENG load characteristics. The experimental results show that the coupling mode single cycle current of the vertical contact separation mode TENG is increased by 137 times (from 32 µA to 4.32 mA). The current of the energy TENG (E H -TENG) and switch TENG (S V -TENG) coupled outputs for a single cycle is increased by 5284 times (from 1.3 µA to 6.87 mA). In the application, 120 LEDs in parallel and six 100 W commercial lamps in parallel can be lit. Therefore, the self-triggering switch solved the problem of the adjustability, controllability, and requirement of the external chemical power supply of the TENG. The multiple TENG coupling output method widens the path for the mechanical design of TENGs, and it is easily applied to various energy harvesting design ideas. In addition, it greatly optimizes the development of power management and provides important guidance for the energy management of TENGs. The characteristics of low current and high output impedance of triboelectric nanogenerators (TENGs) constrain their development and application.Recently, corresponding energy management methods have been proposed to solve the problems. Among them, the switch plays an important role in energy management to improve output performance and reduce output impedance. Therefore, a self-triggering switch controlled by TENGs is proposed for power management to achieve high-performance output. It is comprised of an electronic logic switch and the triggering TENG to release the energy stored by the energy-TENG. The experimental results demonstrate that the self-triggering switch can adjust the duty cycle with the assistance of the inherent load ch...