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学者姓名：汪晶慧
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Abstract ：
针对磁性材料直流磁化特性难以宽范围精确测量的问题,本文提出直流励磁法测量磁性材料的本征直流磁化曲线,详细分析其测量原理并搭建自动化测量平台.通过上下位机通信合理控制开关管的通断时间,利用高精度采样仪器采样感应电压和励磁电流后进行数据处理.基于测量平台分析其误差来源并加以解决,实现宽范围的磁性材料直流磁化曲线的测量.利用磁导率是真空磁导率的空心电感为被测件,验证直流励磁法的测量精度.最后,利用提出的直流励磁法测量铁氧体和金属磁粉心的直流磁化曲线,将其与大信号交流法测量结果进行比较分析.
Keyword ：
测量 测量 直流励磁 直流励磁 直流磁化特性 直流磁化特性 软磁材料 软磁材料
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| GB/T 7714 | 汪晶慧 , 范鹏 , 陈为 . 基于直流励磁的磁性元件直流磁化特性测量与分析 [J]. | 电工电能新技术 , 2025 , 44 (3) : 99-108 . |
| MLA | 汪晶慧 等. "基于直流励磁的磁性元件直流磁化特性测量与分析" . | 电工电能新技术 44 . 3 (2025) : 99-108 . |
| APA | 汪晶慧 , 范鹏 , 陈为 . 基于直流励磁的磁性元件直流磁化特性测量与分析 . | 电工电能新技术 , 2025 , 44 (3) , 99-108 . |
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Abstract ：
This paper investigates the loss measurement methods of magnetic component for power conversion applications. A comparison calorimetric method is proposed for magnetic component losses measurement, and the proposed method can eliminate measurement errors of traditional calorimetric method. The measurement principle is introduced in detail and this method is realized, and possible sources of error in measurement are evaluated and addressed. Hysteresis control is utilized to achieve automated measurement. Resistor and air-core inductor are used to verify the accuracy of the proposed method. The results show that the proposed method can be used to measure loss of resistor and inductive element for high frequency up to 5MHz, and the range of loss is 0.1W to 10W. IEEE
Keyword ：
Calorimetry Calorimetry comparative calorimetric method comparative calorimetric method Containers Containers Core losses Core losses high frequency high frequency Loss measurement Loss measurement Magnetic hysteresis Magnetic hysteresis measurement measurement Power measurement Power measurement Temperature measurement Temperature measurement Temperature sensors Temperature sensors
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| GB/T 7714 | Wang, J. , Fan, P. , Shuang, L. et al. Comparative Calorimetric Method for Magnetic Component Losses Measurement with High Frequency [J]. | IEEE Journal of Emerging and Selected Topics in Power Electronics , 2024 , 12 (5) : 1-1 . |
| MLA | Wang, J. et al. "Comparative Calorimetric Method for Magnetic Component Losses Measurement with High Frequency" . | IEEE Journal of Emerging and Selected Topics in Power Electronics 12 . 5 (2024) : 1-1 . |
| APA | Wang, J. , Fan, P. , Shuang, L. , Huang, F. , Chen, W. . Comparative Calorimetric Method for Magnetic Component Losses Measurement with High Frequency . | IEEE Journal of Emerging and Selected Topics in Power Electronics , 2024 , 12 (5) , 1-1 . |
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Abstract ：
针对高低频复合励磁磁元件磁心损耗难以精确测量和建模的问题,在详细分析现有磁心损耗测量方法和磁心损耗模型局限性的基础上,根据直流功率法测量原理搭建高低频复合励磁磁心损耗测量系统,利用损耗能精确测量的空心电感验证其测量精度.最后,基于直流偏置下脉宽调制(pulse width modulation,PWM)波励磁的磁心损耗模型,提出高低频复合励磁磁性元件的磁心损耗预测模型,并实验验证预测模型最大相对误差为-8.83%,具有较高的精度.
Keyword ：
模型 模型 直流功率法 直流功率法 磁心损耗 磁心损耗 磁滞回线 磁滞回线 高低频复合励磁 高低频复合励磁
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| GB/T 7714 | 汪晶慧 , 卢志诚 , 陈为 . 高低频复合励磁磁心损耗量化的研究 [J]. | 中国电机工程学报 , 2024 , 44 (10) : 4091-4102,中插29 . |
| MLA | 汪晶慧 et al. "高低频复合励磁磁心损耗量化的研究" . | 中国电机工程学报 44 . 10 (2024) : 4091-4102,中插29 . |
| APA | 汪晶慧 , 卢志诚 , 陈为 . 高低频复合励磁磁心损耗量化的研究 . | 中国电机工程学报 , 2024 , 44 (10) , 4091-4102,中插29 . |
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Abstract ：
Aiming at the problem that it is difficult to accurately measure and model the core losses of high and low frequency composite excitation, based on the detailed analysis of the limitations of the existing core losses measurement methods and core losses models, a core losses measurement system of high and low frequency composite excitation is built based on DC power method in this paper. The measurement accuracy is verified with the air-core inductor whose loss can be accurately measured. Finally, the core losses model of high and low frequency composite excitation is proposed based on the core losses model of PWM wave excitation under DC bias, and the experimental results show that the maximum relative error is −8.83%, which has high accuracy. ©2024 Chin.Soc.for Elec.Eng.
Keyword ：
Magnetic cores Magnetic cores
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| GB/T 7714 | Wang, Jinghui , Lu, Zhicheng , Chen, Wei . Research on Quantization of Core Losses of High and Low frequency Composite Excitation [J]. | Proceedings of the Chinese Society of Electrical Engineering , 2024 , 44 (10) : 4091-4102 . |
| MLA | Wang, Jinghui et al. "Research on Quantization of Core Losses of High and Low frequency Composite Excitation" . | Proceedings of the Chinese Society of Electrical Engineering 44 . 10 (2024) : 4091-4102 . |
| APA | Wang, Jinghui , Lu, Zhicheng , Chen, Wei . Research on Quantization of Core Losses of High and Low frequency Composite Excitation . | Proceedings of the Chinese Society of Electrical Engineering , 2024 , 44 (10) , 4091-4102 . |
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Abstract ：
This article investigates the loss measurement methods of magnetic components for power conversion applications. A comparison calorimetric method is proposed for magnetic component loss measurement, and the proposed method can eliminate measurement errors of the traditional calorimetric method. The measurement principle is introduced in detail and this method is realized, and possible sources of error in measurement are evaluated and addressed. Hysteresis control is utilized to achieve automated measurement. Resistor and air-core inductor are used to verify the accuracy of the proposed method. The results show that the proposed method can be used to measure the loss of resistor and inductive element for high frequency up to 5 MHz, and the range of loss is 0.1-10 W.
Keyword ：
Comparative calorimetric method Comparative calorimetric method core losses core losses high frequency high frequency measurement measurement
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| GB/T 7714 | Wang, Jinghui , Fan, Peng , Lin, Shuang et al. Comparative Calorimetric Method for Magnetic Component Losses Measurement With High Frequency [J]. | IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS , 2024 , 12 (5) : 5112-5122 . |
| MLA | Wang, Jinghui et al. "Comparative Calorimetric Method for Magnetic Component Losses Measurement With High Frequency" . | IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS 12 . 5 (2024) : 5112-5122 . |
| APA | Wang, Jinghui , Fan, Peng , Lin, Shuang , Huang, Fubin , Chen, Wei . Comparative Calorimetric Method for Magnetic Component Losses Measurement With High Frequency . | IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS , 2024 , 12 (5) , 5112-5122 . |
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Abstract ：
This article investigates the loss measurement methods of magnetic components for power conversion applications. A comparison calorimetric method is proposed for magnetic component loss measurement, and the proposed method can eliminate measurement errors of the traditional calorimetric method. The measurement principle is introduced in detail and this method is realized, and possible sources of error in measurement are evaluated and addressed. Hysteresis control is utilized to achieve automated measurement. Resistor and air-core inductor are used to verify the accuracy of the proposed method. The results show that the proposed method can be used to measure the loss of resistor and inductive element for high frequency up to 5 MHz, and the range of loss is 0.1-10 W.
Keyword ：
Comparative calorimetric method Comparative calorimetric method core losses core losses high frequency high frequency measurement measurement
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| GB/T 7714 | Wang, Jinghui , Fan, Peng , Lin, Shuang et al. Comparative Calorimetric Method for Magnetic Component Losses Measurement With High Frequency [J]. | IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS , 2024 , 12 (5) : 5112-5122 . |
| MLA | Wang, Jinghui et al. "Comparative Calorimetric Method for Magnetic Component Losses Measurement With High Frequency" . | IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS 12 . 5 (2024) : 5112-5122 . |
| APA | Wang, Jinghui , Fan, Peng , Lin, Shuang , Huang, Fubin , Chen, Wei . Comparative Calorimetric Method for Magnetic Component Losses Measurement With High Frequency . | IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS , 2024 , 12 (5) , 5112-5122 . |
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Abstract ：
磁心损耗的精确测量具有重要工程应用价值和理论意义。本文主要基于直流功率法原理测量磁性元件磁心损耗。空心电感损耗仅是可精确测量的具有线性性质的绕组损耗，因此本文利用空心电感作为定标电感校验测量装置损耗，同时利用空心电感验证建立的测量装置的测量精度，结果表明测量装置测量空心电感损耗的最大相对误差为13.9%,其可精确测量磁性元件磁心损耗。
Keyword ：
直流法 直流法 磁心损耗 磁心损耗 磁性元件 磁性元件 装置损耗 装置损耗
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| GB/T 7714 | 陈秋娴 , 陶硕 , 汪晶慧 . 基于直流功率法的磁心损耗测量研究 [J]. | 电气开关 , 2023 , 61 (04) : 5-8,13 . |
| MLA | 陈秋娴 et al. "基于直流功率法的磁心损耗测量研究" . | 电气开关 61 . 04 (2023) : 5-8,13 . |
| APA | 陈秋娴 , 陶硕 , 汪晶慧 . 基于直流功率法的磁心损耗测量研究 . | 电气开关 , 2023 , 61 (04) , 5-8,13 . |
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Abstract ：
准确评估磁元件损耗对高频功率变换器效率和热设计至关重要。交流功率法广泛用于低频领域的电气电子设备功率和元器件损耗的测量，该方法对电压和电流之间的相位差比较敏感，导致交流功率法在高频领域难以准确测量被测件的损耗。本文提出一种采用无感电阻进行相位差误差补偿的测量方法，克服了相位差的测量误差对高频磁元件损耗测量的影响。分析了测量方法的工作原理，通过求解无感电阻和磁元件损耗的测量公式以消除相位差导致的测量误差，得到新的磁元件损耗测量公式。进一步分析了新测量方法的影响因素，以降低其对测量结果的影响。最后，建立了一个测量平台，在1.2 MHz频率范围内正弦波激励工况下对两种磁元件进行损耗测量，并与阻抗测量法和量热法进行了对比。实验结果验证了提出的方法能够准确有效地测量高频磁元件的损耗。
Keyword ：
损耗 损耗 测量 测量 相位差 相位差 磁元件 磁元件 高频 高频
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| GB/T 7714 | 叶建盈 , 舒一展 , 汪晶慧 et al. 基于相位差误差补偿的磁元件损耗测量法 [J]. | 电子元件与材料 , 2023 , 42 (09) : 1136-1142 . |
| MLA | 叶建盈 et al. "基于相位差误差补偿的磁元件损耗测量法" . | 电子元件与材料 42 . 09 (2023) : 1136-1142 . |
| APA | 叶建盈 , 舒一展 , 汪晶慧 , 万威 , 李睿 . 基于相位差误差补偿的磁元件损耗测量法 . | 电子元件与材料 , 2023 , 42 (09) , 1136-1142 . |
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Abstract ：
Magnetic core loss is one of the important parameters of power magnetic components. In view of the problem that AC power method has a large error in measuring the core loss at high frequency and low loss angle, as well as the disadvantages of calorimetric method, such as high time cost and tedious measurement process, DC power method is proposed. The DC method obtains magnetic core loss by measuring DC input power of inverter circuit, greatly weakening the impact of impedance angle of the measured magnetic component on measurement accuracy, and can accurately measure magnetic core loss under PWM wave excitation. This article conducts research on the following aspects: Firstly, based on the DC power method, this article measured the losses of magnetic cores under asymmetric PWM wave and symmetric PWM wave excitation, established a prediction model for magnetic core losses, and verified the accuracy of the model. Verify the existence of relaxation loss when measuring the magnetic core loss under symmetric PWM wave excitation, and establish a relaxation loss prediction model. © 2023 IEEE.
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| GB/T 7714 | Tao, Shuo , Fu, Zhikang , Wang, Jinghui et al. Study on Core Loss Model of Super High Frequency PWM Wave Excitation [C] . 2023 : 1839-1845 . |
| MLA | Tao, Shuo et al. "Study on Core Loss Model of Super High Frequency PWM Wave Excitation" . (2023) : 1839-1845 . |
| APA | Tao, Shuo , Fu, Zhikang , Wang, Jinghui , Fan, Peng , Chen, Wei . Study on Core Loss Model of Super High Frequency PWM Wave Excitation . (2023) : 1839-1845 . |
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The DC magnetization characteristics of magnetic materials are difficult to be accurately measured in a wide range. In this paper, the DC excitation method is proposed to measure the intrinsic DC magnetization curve of magnetic materials, the measuring principle is analyzed in detail and the measuring platform is built, the on-off time of the switch is controlled reasonably through the communication of the host and lower computer, the voltage and current are sampled by high-precision sampling instrument and then process the data. Based on the measurement platform, the error sources are analyzed in detail and achieve a wide range of magnetic material DC magnetization curve measurement. Finally, the feasibility and accuracy of DC excitation method are verified by using air-core inductors whose permeability is close to vacuum permeability, the DC magnetization curves of ferrite and magnetic powder cores are measured based on the established measuring platform, the DC magnetization characteristics of the two magnetic materials are compared with the measured results of large signal AC method. © 2023 IEEE.
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| GB/T 7714 | Fan, Peng , Yao, Haowei , Wang, Jinghui et al. Measurement and Research of DC Magnetization Curves Based on DC Excitation Method [C] . 2023 : 1807-1813 . |
| MLA | Fan, Peng et al. "Measurement and Research of DC Magnetization Curves Based on DC Excitation Method" . (2023) : 1807-1813 . |
| APA | Fan, Peng , Yao, Haowei , Wang, Jinghui , Tao, Shuo , Chen, Wei . Measurement and Research of DC Magnetization Curves Based on DC Excitation Method . (2023) : 1807-1813 . |
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