Two-level three-phase voltage source inverter fed low-power AC induction motor based on unipolar pulse-width modulation method
Two-level three-phase voltage source inverter fed low-power AC induction motor based on unipolar pulse-width modulation method
复制标题
基于单极性脉宽调制法的两电平三相电压源逆变器馈送小功率交流异步电机
DOI：
10.1049/iet-pel.2015.0231
复制
发表时间：
2016
影响因子：
2
通讯作者：
Zhang Li
中科院分区：
文献类型：
--
作者：
Chen Kai;Ji Shi ming;Zhang Li
Space vector modulation is a well-established theory. Generally, a three-phase voltage source inverter generates eight switching states, including six active and two zero states, by the bipolar method. This study proposes a novel way to synthesise the output voltage vector by turning off both switches in a leg. Accordingly, new leg switching states are defined. A unipolar method is used to achieve discontinuous pulse-width modulation. The complex reference vector is located by one active vector and two newly defined leg switching states. The most notable features of the proposed method are that it completely overcomes the problem of dead time without current polarity detection. These features make it very attractive for low-cost, low-power constant volts per hertz (V/f), open-loop, three-phase AC induction motor applications.
