Abstract:The paper presents a hybrid piezoelectric and magnetoelectric vibration energy harvester with multiple degrees of freedom and broadband. The harvester can extract vibration energy on multiple directions and work in a wide frequency band effectively. It can greatly improve the efficiency of harvesting vibration energy with piezoelectric mechanism and magnetoelectric mechanism together. The paper introduces the structure of the hybrid vibration energy harvester. The vibration system is analyzed and optimized, and the characteristics of multiple degrees of freedom and broadband of the harvester are verified theoretically. And the paper also introduces the system of magnetoelectric transducer. The results show that under different operating frequencies, it appears two vibration peaks, which verifies the characteristic of broadband. Through experiment tests, compared with the output performance of piezoelectric transducer system or magneteoelectric transducer system respectively, the output performance of hybrid piezoelectric and magnetoelectric transducer system has greatly improvement.