Electron cyclotron resonance heating (ECRH) system is one of the most important Tokamak auxiliary heating methods. However, there are growing demands for ECRH system as the physical experiments progress which meanwhil...Electron cyclotron resonance heating (ECRH) system is one of the most important Tokamak auxiliary heating methods. However, there are growing demands for ECRH system as the physical experiments progress which meanwhile adds the difficulty of designing and building the control system of its power source. In this paper, the method of designing a control system based on Single Chip Microcomputer (SCM) and Field Programmable Gate Array (FPGA) is introduced according to its main requirements. The experimental results show that the control system in this paper achieves the conversion of different working modes, gets exact timing, and realizes the failure protection in 10us thus can be used in the ECRH system.展开更多
This paper uses CT to gain the energy directly from the high-voltage transmission line, to address the problem of power supply for monitoring system in high voltage side of transmission line. The draw-out power coil c...This paper uses CT to gain the energy directly from the high-voltage transmission line, to address the problem of power supply for monitoring system in high voltage side of transmission line. The draw-out power coil can induce voltage from the transmission line, using single-chip microcomputer to analog and output PMW wave to control the charging module, provides a stable 3.4 V DC voltage to the load, and solve the problem of easy saturating of core. The power supply based on this kind of draw-out power coil has undergone the overall testing, and it is verified-showing that it can properly work in a non-saturated status within the current range of 50 - 1000 A, and provide a stable output. The equipment also design protection circuit to improve the reliability to avid the impacts of the impulse current or short-circuit current. It effectively solves the problem of power supply for On-line Monitoring System of Transmission.展开更多
A low power dissipation control system for continuous cyclic peritoneal dialysis (CCPD) cycler and its characteristics are reported. Combined withhemodialysis and renal transplantation, peritoneal dialysis is used mai...A low power dissipation control system for continuous cyclic peritoneal dialysis (CCPD) cycler and its characteristics are reported. Combined withhemodialysis and renal transplantation, peritoneal dialysis is used mainly for thetreatment of renal failure. CCPD has been developed during 1980＇s. It provided automatic dialysis procedures during the night to avoid interruptions in patients＇dailyroutine. Furthermore,there is a remarkable decrease in peritonitis occurance usingCCPD. The control system is a critical part for CCPD cycler. The system is approvedto be reliable and flexible in practical experiments. When AC power failure,the system can still ensure the completion of dialysis.展开更多
本文设计了一种太阳能充电器,采用STM32F103ZET6单片机作为充电器控制核心,采用降压式变换(BUCK)电路作为充电控制主电路,通过PWM信号脉宽调整蓄电池的充电电压,利用MAX4080检测太阳能电池输出电流,经过计算获得太阳能电池的输出功率,...本文设计了一种太阳能充电器,采用STM32F103ZET6单片机作为充电器控制核心,采用降压式变换(BUCK)电路作为充电控制主电路,通过PWM信号脉宽调整蓄电池的充电电压,利用MAX4080检测太阳能电池输出电流,经过计算获得太阳能电池的输出功率,通过扰动观察算法自动调整充电电压使充电功率保持在最大值,实现了最大功率点跟踪技术(Maximum Power Point Tracking,简称为MPPT)。利用MPPT充电技术提高了太阳能电池的充电效率,缩短充电时间至少0.2h,且降低了光照强度变化对充电效率的影响,防止过度充电损坏蓄电池。此外,使用LCD1602液晶显示屏显示充电系统的状态,使用户随时了解太阳能电池板的电能输出情况和蓄电池的充电状态,具有较强的实用性。展开更多
文摘Electron cyclotron resonance heating (ECRH) system is one of the most important Tokamak auxiliary heating methods. However, there are growing demands for ECRH system as the physical experiments progress which meanwhile adds the difficulty of designing and building the control system of its power source. In this paper, the method of designing a control system based on Single Chip Microcomputer (SCM) and Field Programmable Gate Array (FPGA) is introduced according to its main requirements. The experimental results show that the control system in this paper achieves the conversion of different working modes, gets exact timing, and realizes the failure protection in 10us thus can be used in the ECRH system.
文摘This paper uses CT to gain the energy directly from the high-voltage transmission line, to address the problem of power supply for monitoring system in high voltage side of transmission line. The draw-out power coil can induce voltage from the transmission line, using single-chip microcomputer to analog and output PMW wave to control the charging module, provides a stable 3.4 V DC voltage to the load, and solve the problem of easy saturating of core. The power supply based on this kind of draw-out power coil has undergone the overall testing, and it is verified-showing that it can properly work in a non-saturated status within the current range of 50 - 1000 A, and provide a stable output. The equipment also design protection circuit to improve the reliability to avid the impacts of the impulse current or short-circuit current. It effectively solves the problem of power supply for On-line Monitoring System of Transmission.
文摘A low power dissipation control system for continuous cyclic peritoneal dialysis (CCPD) cycler and its characteristics are reported. Combined withhemodialysis and renal transplantation, peritoneal dialysis is used mainly for thetreatment of renal failure. CCPD has been developed during 1980＇s. It provided automatic dialysis procedures during the night to avoid interruptions in patients＇dailyroutine. Furthermore,there is a remarkable decrease in peritonitis occurance usingCCPD. The control system is a critical part for CCPD cycler. The system is approvedto be reliable and flexible in practical experiments. When AC power failure,the system can still ensure the completion of dialysis.
文摘本文设计了一种太阳能充电器,采用STM32F103ZET6单片机作为充电器控制核心,采用降压式变换(BUCK)电路作为充电控制主电路,通过PWM信号脉宽调整蓄电池的充电电压,利用MAX4080检测太阳能电池输出电流,经过计算获得太阳能电池的输出功率,通过扰动观察算法自动调整充电电压使充电功率保持在最大值,实现了最大功率点跟踪技术(Maximum Power Point Tracking,简称为MPPT)。利用MPPT充电技术提高了太阳能电池的充电效率,缩短充电时间至少0.2h,且降低了光照强度变化对充电效率的影响,防止过度充电损坏蓄电池。此外,使用LCD1602液晶显示屏显示充电系统的状态,使用户随时了解太阳能电池板的电能输出情况和蓄电池的充电状态,具有较强的实用性。
