一种全桥单相SPWM数控低压变频逆变电源设计  

Design of A Full-bridge Single-phase SPWM CNC Low-voltage Inverter Power Supply

作　　者：杨洪波 龙顺宇 朱立涵 杨伟 

机构地区：[1]海南热带海洋学院海洋信息工程学院,海南三亚572022

出　　处：《工业控制计算机》2023年第3期135-136,155,共3页Industrial Control Computer

基　　金：2021年国家级大学生创新创业训练计划项目(202111100015);海南省2021年高等学校教育教学改革研究项目(Hnjg2021-84);海南省2020年教育发展专项资金项目(Hnjg2020-91)的研究资助成果。

摘　　要：设计了一种全桥单相数控低压变频逆变电源。该逆变电源由正弦波脉宽调制电路(SPWM)、IR2104驱动电路、全桥电路、LC低通滤波电路以及电压电流采样电路构成。通过STC8H单片机发出两路互补的SPWM波,再经过IR2104驱动模块得到四路互补的SPWM波,分别推挽驱动全桥电路中四个MOS管通断,从而完成直流电到交流电的转换,同时A/D实时监控逆变后输出电压、电流,主控制器得到反馈后通过闭环调节SPWM的占空比,控制输出电压、电流保护电路安全。通过实验验证表明该设计基本实现数字化控制指标要求,可调控输出电压0 V~36 V、可调控输出频率2 Hz~200 Hz。This paper designs a full-bridge single-phase CNC low-voltage inverter power supply.The inverter is composed of sinusoidal pulse width modulation(SPWM)circuit,IR2104 driver circuit,full bridge circuit,LC low pass filter circuit and voltage and current sampling circuit.Two complementary SPWM waves are sent by STC8H single chip microcomputer,and four complementary SPWM waves are obtained through IR2104 drive module,which respectively push pull to drive four MOS tubes on and off in the full bridge circuit,thus completing the conversion from DC to AC.Meanwhile,A/D monitors the output voltage and current after inverter in real time.After feedback,the main controller adjusts the duty ratio of SPWM through closed-loop to control the output voltage and current to protect the circuit safety.

关 键 词：单相逆变电源 IR2104 SPWM H桥电路 

分 类 号：TM464[电气工程—电器]