Pendulum clockwork energy storage system

What is a pendulum system energy harvester?

In particular, pendulum system energy harvesters are primarily applied for the conversion of ultra-low-frequency energy, such as oceanic kinetic and human motion energy. The output power of pendulum-like energy harvesters is mainly concentrated at the milliwatt and microwatt levels, which is suitable for low-power devices. Table 1.

Can a pendulum energy harvester be used in a low frequency environment?

Authors to whom correspondence should be addressed. In recent years, energy harvesters using pendulum systems have often been applied in ultra-low-frequency environments, such as ocean waves, human motion, and structural vibration.

What is pendulum based energy harvesting?

According to literature review, the typical sources for pendulum-based energy harvesting include ocean wave, vehicle motion, human motion, structural vibration, flow-induced vibration, and so on as shown in Fig. 15. The main applications are to provide wireless sensors and portable electronics with durable electrical power.

How does a pendulum system work?

The buoy drives the platform to slide along the ramp due to the wave motion. This structure reduces the effect of gravity on the pendulum system and enhances the rotational potential of the pendulum system. The facilitation of the rotating motion of the pendulum significantly enhances the output power of the energy harvester.

What are the working conditions of a pendulum energy harvester?

The working conditions of pendulum energy harvesters are <10 Hz, which mainly include ocean wave and human motion energy. Furthermore, single-pendulum systems can be combined with other functions, such as mechanical motion rectifiers and structural damping.

What are pendulum mechanisms for energy harvesting?

Pendulum mechanisms for energy harvesting In a broad sense, a pendulum is a mass or an eccentric rotor which can rotate around an axis with a restoring torque generated by its gravity. There have been a series of different configurations of the pendulum mechanisms utilized in vibration energy harvesting with the progress of this topic.