伺服驱动用变频调速系统效率一种计算方法的研究  

Research on An Efficiency Calculation Method of Variable-Frequency Adjustable Speed Drive System for Servo Drive

作　　者：黄天岐 殷国山 郑诗瑶 朱俊磊 寿剑超 HUANG Tian-qi;YIN Guo-shan;ZHENG Shi-yao;ZHU Jun-lei;SHOU Jian-chao(CVC Testing Technology(Jiaxing)Co.,Ltd.,Jiaxing 314001)

机构地区：[1]嘉兴威凯检测技术有限公司,嘉兴314001

出　　处：《环境技术》2024年第10期179-183,192,共6页Environmental Technology

摘　　要：伺服驱动用变频调速系统被广泛的应用在工业、农业、交通、建筑等多个领域,文章通过研究一种基于伺服驱动用变频调速系统效率的计算方法,达到优化电动机运行状态和实现节能减排的目的。首先通过分析电动机效率对各领域的影响以及变频调速系统在各领域中的应用情况,指出传统仅针对电动机、负载或前端控制器进行的能效计算的不足。文中介绍了这种计算方法和计算步骤,包括确认负载信息、计算有功功率、计算损耗功率、计算电动机实际输出功率、计算电动机转矩、计算各部分效率以及计算系统总效率等6个步骤。然后针对于水泵负载和电梯负载这2个特定场景提出具体的计算方法和公式。最后,通过实际计算带入求得2种伺服驱动用变频调速系统的实际效率,论述通过调整变频器参数优化电动机运行状态的重要性。此计算方法可以为变频调速系统能效评估提供一种新的思路和方式,希望能够为更多领域的能效提升和节能减排工作提供一定参考。Variable-frequency adjustable speed drive system for servo drive is widely used in industry,agriculture,transportation,construction and other fields.This paper studies a calculation method based on the efficiency of variable-frequency adjustable speed drive system for servo drive to optimize the operation state of motor and achieve the purpose of energy saving as well as emission reduction.Firstly,by analyzing the influence of motor efficiency on various fields and the application of variable frequency speed control system in various fields,it points out that the traditional energy efficiency calculation is only for motor,load or front-end controller which is insufficient.This paper introduces the calculation method and calculation steps,including the confirmation of load information,calculation of active power,calculation of loss power,calculation of actual motor output power,calculation of motor torque,calculation of the efficiency of each part and calculation of the total efficiency of the system.Then,specific calculation methods and formulas are proposed for two specific scenarios:pump load and elevator load.Finally,the actual efficiency of two kinds of servo drive variable frequency adjustable speed drive system is obtained through practical calculation,and discuss the importance of optimizing the operation state of the motor by adjusting the parameters of the inverter.This calculation method can provide a new idea and way for the energy efficiency evaluation of variable frequency adjustable speed drive system,hoping to provide a certain reference for the energy efficiency improvement and energy saving and emission reduction work in more fields.

关 键 词：伺服驱动 变频调速系统 效率计算 

分 类 号：TM921.5[电气工程—电力电子与电力传动]