CAJ | 학술논문

在6~10kV的高压变频领域，与传统拓扑结构相比，有源中点箝位型五电平(active neutral-point-clamped five- level，ANPC-5L)逆变器具有很高的实用价值。针对传统五电平逆变器空间矢量脉宽调制(space vector pulse width modulation，SVPWM)控制算法复杂、计算量大等缺点，研究一种基于线电压坐标系的 SVPWM 控制算法，通过进行
재6~10kV적고압변빈영역，여전통탁복결구상비，유원중점겸위형오전평(active neutral-point-clamped five- level，ANPC-5L)역변기구유흔고적실용개치。침대전통오전평역변기공간시량맥관조제(space vector pulse width modulation，SVPWM)공제산법복잡、계산량대등결점，연구일충기우선전압좌표계적 SVPWM 공제산법，통과진행
The active neutral-point-clamped five-level (ANPC-5L) has the very high practical utility, especially in high voltage variable frequency field of 6kV to10kV. A new SVPWM algorithm based on line voltage coordinate was studied to overcome shortcomings of the traditional algorithm. Through coordinate transformation,steps of determine basic vectors and the solution about the basic vector corresponding action time are simplified. It was applied to ANPC-5L inverter successfully and its correctness was proved by the experiment waveform and current harmonic analysis. Combined with the characteristics of ANPC-5L inverter and the new control algorithm, a kind of high efficient neutral-point voltage balance control algorithm had been put forward. Based on the judgment of neutral potential to calculate the required switch sequence and reuse vector action time ratio, the neutral current inflow and outflow balance and the purpose of control neutral-point voltage balance was achieved. The validity of the neutral-point control algorithm was proved by the experimental results.