| Firstly,the situation about instantaneous control invert technique is generally introduced in this paper. And then,the comparison of hysteresis instantaneous control and SPWM instantaneous control with fixed switching frequency,and the comparison of inductor-current feedback and capacitor-current feedback are given in the paper. At the same time the characteristics of the inverter with current SPWM (sinusoidal pulse width modulation) control using output voltage and capacitor-current feedback are obtained and analyzed. Based on output voltage and capacitor-current feedback current SPWM control,the inverter is modeled and the prototype is made. The simulation and experimental results illustrate advantages of the inverter:fixed switching frequency,high output-voltage performance,and strong nonlinear load adaptability,etc. Finally the three-phase inverter applying output voltage and capacitor-current feedback current SPWM control is researched in the paper and the simulation results demonstrate that the 3-phase inverter is also with a high performance.
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