CAJ | 학술논문

针对有源能量回馈控制问题，通过分析电机制动状态下电流波形和能量转换过程，并在同步旋转 dq 坐标系下建立三相电压型并网逆变器的数学模型，采用直接电流控制的空间矢量脉宽调制(SVPWM)算法，实现了并网回馈电流有功分量和无功分量的独立控制，并搭建了能量回馈系统的实验平台，完成了三相并网逆变器的电阻负载实验和并网回馈实验。该系统解决了能量回馈过程中注入电网时产生的问题，并能实现网侧单位功率因数控制。
침대유원능량회궤공제문제，통과분석전궤제동상태하전류파형화능량전환과정，병재동보선전 dq 좌표계하건립삼상전압형병망역변기적수학모형，채용직접전류공제적공간시량맥관조제(SVPWM)산법，실현료병망회궤전류유공분량화무공분량적독립공제，병탑건료능량회궤계통적실험평태，완성료삼상병망역변기적전조부재실험화병망회궤실험。해계통해결료능량회궤과정중주입전망시산생적문제，병능실현망측단위공솔인수공제。
In view of the active energy of motor feedback system,the current waveform and the energy conversion process of a motor in brake state were analyzed,and the mathematical model of the three-phase voltage-type inverter grid was established in the synchronous rotating dq coordinate system,the independent control of the feedback current active component and reactive component grid was achieved with SVPWM direct current control algorithm,building experimental platform of motor energy feedback system in order to complete the resistive load experiments and feedback experiments of three-phase grid-connected inverters.The experimental results show that bidirectional flowing of the energy is implemented with energy feedback,and the harmonics are suppressed effectively.