Quantitative Analysis of Switched－Capacitor Boost Inverter

切換式電容升壓型逆變器之定量分析

The main purpose of this paper is to develop quantitative analysis and control design for the switched-capacitor (SC) boost DC-AC inverter proposed, and then employ them to realize DC-AC conversion function for the application of electromagnetic luminescent (EL) lamp drive. Due to SC technique, this inverter does not require any big/heavy inductive element, for examples, inductor andtransformer, so its I.C. fabrication is promising for realization. Here, the theoretical analysis and control design include: steady-state analysis, output/input power, conversion efficiency, voltage conversion rate, output ripple percentage, switch timing control, system stability analysis, and total harmonic distortion (THD)…etc. Finally, a multi-stage SC boost DC-AC inverter is made and simulated by SPICE tool, and then to verify a variety of conclusion from theoretical analysis and control design above. In addition, a practical capacitive load: electromagnetic luminescent (EL) lamp is considered and simulated, and the results are illustrated to show the efficacy of the inverter proposed.