Inductance boost type five-level inverter and control method thereof

• Main Authors: WANG LEI, LYU ZHIWEI, GUO CHUNPING, GE XUEJIAN, LI WEIWEI
• Format: Patent
• Language: Chinese; English
• Published: 04.10.2022
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The invention discloses an inductance boost type five-level inverter and a control method thereof, and the five-level inverter comprises a DC power supply, an inductor L, a capacitor C, a switching tube S1, a switching tube S2, a switching tube S3, a switching tube S4, a switching tube S5, and a switching tube S6. Compared with an existing five-level inverter, the five-level inverter has six working modes, only one direct-current power source, one inductor, one capacitor and six switching tubes are needed, the structure and control are simpler, the number of switching devices and energy storage elements is smaller, and the total voltage stress of the switching devices is lower; and the voltage boosting and capacitor voltage self-balancing capabilities are realized. 本发明公开了一种电感升压型五电平逆变器及其控制方法，其中，五电平逆变器包括直流电源、电感L、电容C、开关管S1、开关管S2、开关管S3、开关管S4、开关管S5、开关管S6；相比于现有的五电平逆变器，本发明五电平逆变器具有6种工作模态，只需1个直流电源、1个电感、1个电容和6个开关管，其结构与控制更加简单，具有更少的开关器件和储能元件数量以及更低的开关器件总电压应力，并且具有升压和电容电压自平衡能力。