不同类型逆变器功率损耗和输出电压品质的比较

重点对不同类型逆变器馈电的传动系统的功率损耗和输出电压品质进行了比较,逆变器类型包括采用dv/dt或正弦波滤波器的硬开关逆变器以及谐振或准谐振逆变器.谐振逆变器以ZCS谐振逆变器为代表,准谐振逆变器以直流环节采用高频变压器的ZVS准谐振逆变器为代表,给出了仿真和试验结果.在PSPICE环境下,模型仿真几乎全部使用实物.数字仿真时,采用异步电机和电缆组成的高频模型.实验测量是在现有逆变器实验模型上进行的,此模型专用于检测带有dv/dt(或正弦波)滤波器选件的逆变器功能.测量时使用了LEM Norma D6100功率分析仪和一台基于PC平台的功率分析仪,并采用多功能插件NI-Daq 6024E和在LabVIEW环境下开发的控制软件.

Comparison of Power Losses and Quality of Output Voltage from Different Types of Inverters

The paper is focused on comparison of power losses and a quality of output voltage in inverters fed drives for several types of inverters. The explored types of inverters were either based on hard switched inverter with dv/dt or sine-wave filter or the resonant or quasi resonant inverters. The family of resonant inverters was represented by the ZCS resonant inverter, the family of quasi resonant inverters was represented by the ZVS quasi resonant inverter with high frequency transformer in resonant DC link. There are presented both the simulation and the experimental results in this paper. The models were simulated in PSPICE environment using mostly models of real parts. High frequency models of an induction motor and a power cable are used in the numerical simulation. The experimental measurement was performed on existing laboratory models of inverters built for examination of their function with optional dv/dt and sine wave filter. The measurement was done on measuring unit using power analyzer LEM Norma D6100 and a power analyzer based on PC platform with multifunction cards NI- Daq 6024E and control software developed in LabVIEW environment.