摘要
通过对高频逆变器前端DC-DC的升压PWM调制和后端DC-AC的SPWM调制的研究,提出了利用FPGA结合DDS技术来实现逆变器的控制电路集成化,并采用模数混合信号F P G A集成了闭环控制的反馈控制电路,从而简化设计,提高系统的稳定和可靠性。本设计中,重点在于外围功率电路部分前端升压的高频变压器的设计以及输出端L C滤波电感与电容的选取,需要综合考虑频率特性、功率因数来选取合适的材料和数值。
Through the research of De to De step-up of the PWM modulation and the DC to AC of SPWM modulation of high- frequency inverter. A method is provided by us that FPGA combined with DDS technology to achieve the integration of inverter control circuit. And the application of mixed-signal FPGA integrates closed-loop feedback control circuit, which simplifies the design and improves system reliability and stability. For the design, the key is that the periphery power circuit of high frequency transformer and the choice of inductance and capacitance in the LC filter.The right material and the fight value depend on frequency characteristic and power factor.
出处
《自动化与仪器仪表》
2009年第1期44-45,74,共3页
Automation & Instrumentation
