This paper mainly focus on cascaded QZSI, the main aim is reduces the shoot through duty cycle and there by the component stress get reduced which gives the better efficiency and improve the reliability of the system. The increase in number of stage will also increase boost factors. Proposed system is simulated in the power simulation software. In conventional method, the voltage function has two stage systems, during shoot through states it causes short circuit of the dc link capacitor. In order to overcome this problem the QZSI shoot through states are used to boost the magnetic energy stored in the dc side inductance. The proposed system can improve the efficiency by 91%.