To address the increasingly high requirements of power systems for reactive power and voltage support capability as well as system stability

this study proposes an advanced adiabatic compressed air energy storage(CAES) power generation system based on a dual-excited synchronous unit. Meanwhile

the phase modulation mode is integrated to improve equipment utilization efficiency and power grid support performance. In addition

the proportional-integral (PI) speed control and an improved incomplete differentiation algorithm are adopted to optimize the speed regulation capability and dynamic performance. Correspondingly

a speed-power tracking excitation control strategy is designed

and a mathematical model of this novel CAES system is constructed. Furthermore

a simulation model is built based on MATLAB/Simulink for comparative analysis. The simulation results indicate that

compared with the traditional compressed air energy storage system

the proposed novel compressed air energy storage system exhibits significant improvements in the regulation capability of terminal voltage and speed

as well as transient stability during the power generation mode

phase modulation mode

and the switching process between these two modes. Therefore

the dynamic performance and stability of the power system can be effectively enhanced.