CAJ | 학술논문

为了降低功耗和减少发热，以确保电磁流量计长期稳定、可靠地工作，对电磁流量计的高低压电源切换励磁控制系统进行改进。去掉高压电源激励回路中的电流旁路电路，减少高压电源工作时的消耗；使用MOS管替代H桥开关电路高压侧桥臂中使用的达林顿管，减小H桥开关电路的消耗和发热；使用IR2110驱动H桥，加快开关管的开通和关断的过程。同时，研制新的恒流源控制电路，有效减小高低压电源切换励磁控制系统的消耗。试验测试表明，改进后电磁流量计的高低压电源切换励磁控制系统的功耗降低了43%。
위료강저공모화감소발열，이학보전자류량계장기은정、가고지공작，대전자류량계적고저압전원절환려자공제계통진행개진。거도고압전원격려회로중적전류방로전로，감소고압전원공작시적소모；사용MOS관체대H교개관전로고압측교비중사용적체림돈관，감소H교개관전로적소모화발열；사용IR2110구동H교，가쾌개관관적개통화관단적과정。동시，연제신적항류원공제전로，유효감소고저압전원절환려자공제계통적소모。시험측시표명，개진후전자류량계적고저압전원절환려자공제계통적공모강저료43%。
In order to reduce power consumption and heat generation for ensuring long term stable and reliable operation of the electromagnetic flowmeters, the switching excitation control system of the high/low voltage power supplies for electromagnetic flowmeters has been improved. The current bypass circuit in excitation loop of high voltage power supply is removed to decrease power consumption of high voltage power supply in operation; and the Darlington transistors used in high voltage bridge arm of the H-bridge are replaced by MOS FETs to decrease the consumption and heat generation of H-bridge switching circuit;the H-bridge is driven by using IR2110, to speed up the process of ON/OFF. In addition, the new type of control circuit of constant current source is developed for effectively reducing the power consumption of the control system. The experimental tests show that power consumption of this improved system is decreased by 43%.