1.88kW BLDC Sensorless FOC with Adaptive Sliding Mode Observer

This dataset is in support of my planned research paper shortly to be submitted to "IEEE Transactions on Power Electronics".The results contained in this dataset are graphs which give intutive idea on the control characteristics, whether the pole/zero is on the imaginary axis or the right half plane. The switching frequency for these controllers is generally 20 kHz or more.In this dataset, switching frequency has been increased to 1 MHz and the comparison is drawn.BLDC motors ae used in medical industry ,ventillators, solar trackers, CNC servodrives, industrial robots, automative, electric vehicles- autos, rickshaws etc.Using this dataset, the industrial engineer can decide whether to run at that frequency or not. So, this study comes in handy to decide when designing in practice for industries and also for academia purposes.In this particular dataset, MOSFET is switched from 20 kHz to 1MHZ , at 26 different PWM frequencies and the resulting characteristics.The speed and the position estimation of BLDC is done using the sensorless vector control method i.e., Field Oriented control (FOC) with the addition of SMO observer which gives the estimation of speed and the sensorless rotor position. The switching pattern of the 3-phase inverter is implemented using space vector modulation.DIfferences in this paper dataset can be seen as the author has included following , with analysis which can be drawn from seeing attached graphs -performance comparison using Sliding Mode Observer (SMO) at different frequencies.PWM switching frequency is varied 26 times from 20 kHz to 1 MHz , - will help decide MOSFETs switching frequency.Of course, the Rdson, dc link inverter voltage ,other practical parameters etc has been taken into consideration (not submitted here) bu some analysis related to it,you may find in the authors Transaction paper.Separate results at all these 46 frequenciesStability Margins - Gain/PhaseOpen Loop Control PerformanceTransfer Function CompensationClosed loop TuningRoot Locus of Uncompensated System and Compensated SystemBode Plot - magnitude and phasePole Zero Map of Uncompensated System and Compensated SystemUnit-Step Response of Uncompensated System and Compensated SystemNyquist plot of Uncompensated System and Compensated SystemNichols chart of Uncompensated System and Compensated SystemImpulse Response of Uncompensated System and Compensated SystemSinusoidal ExcitationAll this is implemented on 32-bit Real-Time microcontroller. The pins usage not mentioned here are used for other General-Purpose-CAN,USB, RS485 etc.

本数据集用于支撑即将投稿至"IEEE电力电子汇刊"（IEEE Transactions on Power Electronics）的研究论文。本数据集包含的结果均为各类图表，可直观展现控制系统特性，包括极点/零点位于虚轴还是右半平面。此类控制器的常规开关频率通常为20 kHz及以上，本数据集将开关频率提升至1 MHz并开展对比分析。

无刷直流电机（Brushless DC Motor, BLDC）广泛应用于医疗行业、呼吸机、太阳能追日系统、数控机床伺服驱动器、工业机器人、汽车领域及电动乘用车、三轮车等场景。借助本数据集，工业工程师可判断是否采用该开关频率运行，因此本研究可为工业实际设计及学术研究提供实用参考。

本数据集针对MOSFET在26种不同PWM开关频率下（从20 kHz至1 MHz）的开关特性展开研究。无刷直流电机的转速与转子位置估计采用无传感器矢量控制方法实现：即结合滑模观测器（Sliding Mode Observer, SMO）的磁场定向控制（Field Oriented Control, FOC），通过该观测器完成转速与无传感器转子位置的估计。三相逆变器的开关模式采用空间矢量调制实现。

本数据集的独特之处在于作者纳入了以下可通过随附图表直观得出的分析内容：
1. 不同开关频率下滑模观测器的性能对比；
2. 26次PWM开关频率调节（从20 kHz至1 MHz）的相关结果，可用于辅助确定MOSFET的最优开关频率。

当然，本研究已将MOSFET漏源通态电阻（Rdson）、直流母线逆变器电压等其他实际参数纳入考量（本次未随附相关细节），相关分析可参见作者已投稿的《IEEE电力电子汇刊》论文。所有46种频率下均包含独立测试结果，具体包括：
- 稳定裕度：增益裕度/相位裕度
- 开环控制性能
- 传递函数补偿
- 闭环调谐
- 未补偿系统与补偿系统的根轨迹
- 幅频与相频波特图（Bode Plot）
- 未补偿系统与补偿系统的极零点分布图
- 未补偿系统与补偿系统的单位阶跃响应
- 未补偿系统与补偿系统的奈奎斯特图（Nyquist Plot）
- 未补偿系统与补偿系统的尼科尔斯图（Nichols Chart）
- 未补偿系统与补偿系统的冲激响应
- 正弦激励响应

所有实验均基于32位实时微控制器完成，未提及引脚用途的引脚被用于连接其他外设，包括通用控制器局域网（General-Purpose-CAN）、通用串行总线（USB）、RS485总线等。