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实用新型
CN203104326U 三电平滞环电流跟踪逆变器 失效 - 放弃

三电平滞环电流跟踪逆变器
摘要：
本实用新型公开了一种三电平滞环电流跟踪逆变器。其三电平逆变桥输出端串联电感器后作为三电平滞环电流跟踪逆变器的输出端，各电压检测单元分别检测三电平逆变桥的零电平支撑点与逆变器三相输出端之间的电压，检测结果分别送入各驱动控制单元，电流检测单元检测逆变器的三相输出电流，检测结果分别送入各滞环比较单元，三相指令电流信号分别送入各滞环比较单元和各驱动控制单元，各滞环比较单元的输出端接对应的驱动控制单元，各驱动控制单元输出端接对应的驱动单元，各驱动单元的输出端接三电平逆变桥的驱动信号输入端。所述装置及其控制方法能够对三电平逆变器的输出电流进行滞环跟踪控制，具有跟踪精度高、速度快、实时性好等优点。
摘要（英）：

The utility model discloses a three-level hysteresis current tracking inverter. The three-level inverter bridge output end of the three-level hysteresis current tracking inverter is connected in series with an inductor to serve as the output end of the three-level hysteresis current tracking inverter; each voltage detection unit detects the voltage between a zero level supporting point of a three-level inverter bridge and each three-phase output end of the inverter; detection results are respectively sent to each drive control unit; each current detection unit detects a three-phase output current of the inverter; detection results are respectively sent to each hysteresis comparison unit; three-phase command current signals are respectively sent to each hysteresis comparison unit and each drive control unit; the output end of each hysteresis comparison unit is connected with the corresponding drive control unit; the output end of each drive control unit is connected with a corresponding drive unit; and the output end of each drive unit is connected with the drive signal input end of the three-level inverter. By the device and a control method for the device, hysteresis tracking control can be performed on the output current of the three-level inverter; and the three-level hysteresis current tracking inverter has the advantages of high tracking precision, high speed, high real-time performance and the like.

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