Utilizing SiC technology and boasting a battery energy return function, this system offers an impressive efficiency of charging and discharging of over 96.1%, surpassing that of conventional IGBT technology devices (92% efficiency). Moreover, it reduces the heat generated during operation by up to 50% so that it diminishes the expenditure on electricity for air conditioning and prolongs the service life of the equipment electronics, while mitigating equipment exhaust noise and improving the comfort of site personnel.