【作者】 陈德志；

【导师】 白保东；

【作者基本信息】 沈阳工业大学 ， 电机与电器， 2014， 博士

【摘要】 本文以教育部创新团队项目、辽宁省教育厅创新团队项目及抚顺煤矿电机制造有限责任公司项目为背景，以1140V/75kW隔爆一体式电机为研究对象，针对煤矿作业空间狭窄及变频调速系统与电机高度集成后带来的驱动系统体积问题、无速度传感器矢量控制转速估计值易受测量参数影响问题、系统成本等问题，开展了隔爆一体式电机调速系统硬件功率设计及转速估计研究。论文的主要研究内容包括以下几个方面：为了提高系统集成度，缩减隔爆一体式电机体积及成本，基于电力电子系统建模，对变频调速系统硬件功率部分展开设计。研究一种解析法计算逆变器母线电容参数的方法，对整流输出一个周期内的波形进行详细分析，考虑了电压跌幅、纹波电流、系统稳定性的相互影响，并采用牛顿-拉夫逊法计算母线电容值。给出了输入电流、进线电抗器电压、母线电容电压、母线电容纹波电流、输出电流的仿真与计算方法。针对隔爆一体式电机设计过程中受到体积及温升的制约，准确计算整流器及逆变器损耗对于正确设计隔爆一体式电机调速系统水冷散热器及合理选择IGBT具有重要意义。基于此，提出解析法计算可控整流器、逆变器IGBT损耗的计算方案。在实现过程中，综合考虑了门极驱动电阻、直流母线电压、温度、结温对IGBT损耗的影响。给出了SVPWM调制算法下逆变器IGBT及Diode的导通损耗、开关损耗、总损耗、温差及结温的计算方法。考虑到IGBT损耗与结温相互影响的特点，利用自定义热路模型，提出以环境温度为初始条件的循环迭代算法，最后给出了IGBT结温、壳温及散热器温度曲线。定量分析了直流母线电压、门极驱动电阻、环境温度对整流器及逆变器的损耗及温升计算的影响。在此基础上，设计水冷散热器一台，对隔爆一体式电机主要发热部件进行了损耗计算，并应用温度仿真软件进行热流分析，将仿真与实验进行了对比。对调速系统电流及转速调节器参数进行基于MATLAB与Simplorer/Ansoft协同仿真平台的在线调整，通过程序优化正确的PI调节器参数，为系统实验时PI参数的整定节约时间。基于DSP2812对隔爆一体式电机调速系统进行无速度传感器矢量控制程序设计。针对煤矿电网电压波动大，转速估计过程中采集数据易受测量参数剧烈波动而导致的转速估计误差增大问题，研究采用基于模糊自适应卡尔曼滤波的感应电动机无速度传感器控制策略。通过监视理论残差与实际残差的比值，对测量噪声协方差阵进行递推在线修正，使其逐渐逼近真实噪声水平，从而使滤波器执行最优估计，提升转速估计策略抗测量参数波动的能力，提高估算精度。对隔爆一体式电机进行结构设计，制作1140V/75kW隔爆一体式电机一台。搭建实验平台，分别在空载及负载条件下，对其进行实验研究。主要包括：空载条件下开关特性实验、不同转速、负载转矩下温升实验、PI参数调节实验、速度突然上升、下降、电流突加扰动等转速估计实验等。验证采用本文所提出的方案、设计的隔爆一体式电机的正确性与可行性。更多还原

【Abstract】 Based on the background of ministry of education innovation team project, educationdepartment of Liaoning province innovation team project and project of Fushun Coal MineMotor Manufacturing Ltd., a1140V/75kW explosion-proof integrative motor as researchobject, aimed at volume problem of driving system resulting from narrow mine working spaceand after the variable-frequency speed control system was integrated with motor highly, andthe problem that speed estimation value of speed sensorless vector control system is easilyaffected by measuring parameters, and system cost problems, research on speed controlsystem power design and speed estimation of explosion-proof integrative motor had beencarried out. The main contents of this thesis include the following aspects:In order to improve the system integration, reduce volume and cost of explosion-proofintegrative motor,Based on power electronics modeling, the power part of variable-frequencyspeed control system was spreading design. An analytical method to calculate the buscapacitance parameters of inverter was put forward, and a detailed analysis was made aboutoutput waveform of rectifier in a cycle considering interaction between the voltage drop,ripple current and system stability, and the bus capacitance values were calculatedby Newton-Raphson method. And it gave the simulation and calculation scheme of inputcurrent, voltage of SKSG, voltage of bus capacitance, ripple current of bus capacitance andoutput current.For the design process of explosion-proof integrative motor is restricted by volume andtemperature，the accurate calculation of the rectifier and inverter loss is important fordesigning speed regulation system water-cooled radiator of explosion-proof integrative motoraccurately and selecting IGBT reasonable. Based on this,A calculation scheme to calculatecontrolled rectifier and inverter IGBT loss was put forward based on analytical method. In theprocess of implementation, the impact of gate drive resistance, DC bus voltage, temperature,junction temperature on loss of IGBT was considered comprehensively. A calculation methodof inverter IGBT and Diode conduction loss, switch loss, total loss, temperature difference andjunction temperature based on SVPWM modulation algorithm was given. Considering thecharacteristics that IGBT loss and junction temperature influence each other, by using customthermal circuit model, put forward an iteration algorithm in the initial condition of the ambienttemperature, and gave the junction temperature of IGBT, shell temperature and temperature curve of the radiator finally. The influence of the DC bus voltage, the gate drive resistors, theenvironment temperature on rectifier and inverter loss and temperature rise calculation werequantitatively analyzed. On this basis, a water-cooling radiator had been designed, and losscalculation of main heating parts of the explosion-proof integrative motor was conducted, toanalysis heat flux by applying temperature simulation software, simulation and experimentalresults had been compared.Based on the co-simulation platform of MATLAB and Simplorer/Ansoft, onlineadjustment was conducted on current and speed regulator parameters of speed control system,optimized correct PI regulator parameters through programs to save tuning time of PIparameters in system experiment.Vector control program of speed sensorless for speed control system of explosion-proofintegrative motor based was design on DSP2812. For the problems that coal mine power gridvoltage fluctuation was large, and collecting dates were vulnerable to volatility of measureparameters, thus leading to the increase of the speed estimation error in the speed estimationprocess, a kind of speed sensorless control strategy of induction motor based on fuzzy kalmanfiltering was proposed. Recursive and online amend measurement noise covariance matrix bymonitoring the ratio of the theoretical and actual residual, to make it approach the true noiselevel gradually, so that the filter can perform optimal estimation and improve estimationaccuracy.Structure of the explosion-proof integrative motor was design, and an1140V/75kWexplosion-proof integrative motor was made. Experiment platform to conduct experimentalstudy on it under no-load and load conditions respectively was built. Mainly including: switchcharacteristics experiment under no-load condition, temperature rise experiment underdifferent rotation speed and load torque, PI parameters regulation experiment, speed suddenlyrising and falling, current suddenly disturbances such as speed estimation experiments.Correctness and feasibility of the proposed scheme and the designed explosion-proofintegrative motor in this thesis had been verified.更多还原