摘要
对整流和逆变的能量双向流动单相H(型)桥进行PWM控制作了详细研究,比较了单、双极性调制逆变的优缺点。当H桥工作在整流时,要求实现功率因数校正PFC功能,即交流侧进线电流正弦、功率因数接近1,工作在逆变时,要输出电流正弦、(并网)功率因数接近1,最后对H桥在单周控制下的运行,利用Matlab/Simulink的仿真,验证了对单相整流和逆变H桥的分析结果,证明了单极性调制较优。
The detailed study has been paid for PWM control of single-phase H-bridge reetiher/mverter, whlell is able to implement double-direction energy flow. It also compares advantages and disadvantages between single- pole and double-pole PWM inverter. When H-bridge operates as a rectifier, power factor correction （PFC） function must be implemented. Namely, input sinusoidal current and power factor 1 in AC side of the rectifier is satisfied. Also when H-bridge operates as an inverter, output sinusoidal current and power factor 1 （when connects to electric grid） is ensured. At last, the simulation of H-bridge operation under one cycle control （OCC） is completed with Matlab/Simulink software. It verifies the validity of H-bridge analysis and control with single-pole PWM better than that of double-pole PWM.
出处
《电气传动自动化》
2012年第5期1-7,24,共8页
Electric Drive Automation
