矿用三相数字化电源的研究  

Research of Mine-used Digital Three-phase Power Supply

作　　者：杨健康[1] 沈亚瑞[2] 宋建成[2] 

机构地区：[1]山西晋城无烟煤矿业集团有限责任公司,山西晋城048006 [2]太原理工大学电气与动力工程学院,山西太原030024

出　　处：《工矿自动化》2012年第1期43-46,共4页Journal Of Mine Automation

基　　金："十一五"国家科技支撑计划重点项目(2007BAK29B05)

摘　　要：针对现有矿用三相电源对井下电网造成的谐波污染问题,设计了一种基于STM32F103VB的矿用三相数字化电源,详细介绍了该电源的工作原理及控制策略。该电源采用典型AC-DC-AC结构,其PWM整流器采用电压、电流双闭环直接电流控制策略,以实现输入电流为正弦波且与输入电压同相位、输出电压稳定的控制目标;PWM逆变器采用电压外环、电流内环的双闭环控制策略,以提高输出电压的波形质量和负载适应性;SPWM波通过STM32F103VB定时器的下溢中断来获得。实验结果表明,该电源的输入电流谐波含量很低,具有较高的功率因数和输出稳定度。For the problem of harmonic pollution of underground power network caused by existing mine-used three-phase power supply,a mine-used digital three-phase power supply based on STM32F103VB was designed and working principle and control strategies of the power supply were introduced in details.A typical AC-DC-AC structure is adopted in the power supply.The voltage-current dual closed loops direct current control strategy is used in PWM rectifier to make input current and input voltage in phase,input current in sine and output voltage in stabilization.The dual closed loops control strategy of outer voltage loop and inner current loop is used in PWM inverter to improve quality of the output voltage waveform and load adaptability.SPWM wave is generated through underflow interruption of TIM1 of STM32F103VB.The experimental results showed that the power supply has high power factor of input and high stability of output with little harmonic of input current.

关 键 词：矿用电源 三相数字化电源 PWM整流器 PWM逆变器 双闭环控制策略 直接电流控制 高功率因数 

分 类 号：TD611.4[矿业工程—矿山机电]