In order to solve the problem of low output power of piezoelectric energy harvesting systems caused by less energy and wide band of ambient vibration

the method of optimizing the output power of cantilever piezoelectric energy harvesting system with the parallel or series inductance are explored and the influence of different parallel or series inductance to the output power is analyzed.Since the frequency of piezoelectric cantilever is low

and the matching inductor value is large

lossless simulated inductor is used in experiment.The theoretical analysis and experiment results show that the maximum output power of resonance can also be obtained at the deviating points with different matching inductance corresponding to different excitation frequencies

which broadens the operating frequency band and improves the total energy harvesting energy level of the system.When the excitation frequency is 0.8 or 1.2 times of the resonant frequency

the maximum output power with parallel or series inductance is 26.4 and 18.2 times of that of the purely resistive load.