![一种新型IGBT电流反馈型死区补偿方法](/CN/2017/1/103/images/201710517594.jpg)
基本信息:
- 专利标题: 一种新型IGBT电流反馈型死区补偿方法
- 专利标题(英):Novel IGBT current feedback dead time compensation method
- 申请号:CN201710517594.7 申请日:2017-06-29
- 公开(公告)号:CN107171541A 公开(公告)日:2017-09-15
- 发明人: 吕广强 , 顾伟 , 王佳佳 , 梁凯歌 , 陈曦
- 申请人: 南京理工大学
- 申请人地址: 江苏省南京市孝陵卫200号
- 专利权人: 南京理工大学
- 当前专利权人: 南京理工大学
- 当前专利权人地址: 江苏省南京市孝陵卫200号
- 代理机构: 南京理工大学专利中心
- 代理人: 陈鹏
- 主分类号: H02M1/38
- IPC分类号: H02M1/38
The invention relates to an IGBT current feedback dead time compensation method comprising the following steps: designing a peripheral hardware circuit, sampling the output voltage of an inverter, and determining whether the voltage is at a high or low level; taking an output signal as an input signal of a current direction logic loop, and taking a drive signal of IGBTs in the upper and lower bridge arms of the inverter as a trigger signal through a logic OR gate; and inputting a final output signal of the hardware circuit to a microprocessor via an I/O port as a logic signal for judging the direction of current, getting the amount of dead time compensation through judgment, generating a PWM pulse needed, and finally completing dead time compensation. Through the method, the direction of current can be determined accurately. Moreover, whether the current is at a zero-crossing point can be determined, and transition compensation can be carried out in the zero-crossing point stage. The compensation effect is good. The current waveform distortion rate is decreased. The low-speed performance of motors is significantly improved.
IPC结构图谱:
H | 电学 |
--H02 | 发电、变电或配电 |
----H02M | 用于交流和交流之间、交流和直流之间、或直流和直流之间的转换以及用于与电源或类似的供电系统一起使用的设备;直流或交流输入功率至浪涌输出功率的转换;以及它们的控制或调节 |
------H02M1/00 | 变换装置的零部件 |
--------H02M1/38 | .用于防止开关同时导通的装置 |