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论文:2016,Vol:34,Issue(1):153-158 |
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引用本文： |
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高智刚, 李朋, 周军, 邓涛. 无刷电动舵机功率驱动电路发热特性分析[J]. 西北工业大学学报 |
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Gao Zhigang, Li Peng, Zhou Jun, Deng Tao. Thermal Characteristics Analysis of Power Driver for Brushless Electromechanical Actuator[J]. Northwestern polytechnical university |
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| 无刷电动舵机功率驱动电路发热特性分析 |
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| 高智刚, 李朋, 周军, 邓涛 |
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| 西北工业大学 精确制导与控制研究所, 陕西 西安 710072 |
| 摘要: |
| 针对小型大功率无刷电动舵机由于大电流、高功率密度引起的散热困难问题,开展其功率驱动电路发热特性研究。根据所使用的H-PWM-L-ON型半桥调制模式,分析了IGBT三相桥式功率逆变电路的功率损耗,基于RC热网络模型方法建立了该电路的热传导模型,并使用英飞凌FS50R06W1E3型功率模块开展了功率驱动电路发热特性仿真分析和实验验证。结果表明,所给出的功率驱动电路功率损耗分析结果合理可信,通过该热传导模型可有效计算功率器件工作温度。在无刷电动舵机设计过程中,可使用此方法进行功率器件工作温度计算,在确保低于最高工作结温的情况下提高可用输出功率。 |
| 关键词:
无刷电动舵机
功率损耗
发热特性
热传导模型
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| Thermal Characteristics Analysis of Power Driver for Brushless Electromechanical Actuator |
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| Gao Zhigang, Li Peng, Zhou Jun, Deng Tao |
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| Institute of Precision Guidance and Control, Northwestern Polytechnical University, Xi'an 710072, China |
| Abstract: |
| The thermal characteristics of power driver are developed for miniaturized brushless electromechanical actuator(EMA), which aims at solving its thermal cumulate problems caused by large current and high power density. On the basis of the semi-bridge modulation mode of H-PWM-L-ON, the power dissipation of three-phase bridge inverter circuit is analyzed; the thermal conduction model is built with the method of RC thermal network. The simulation and experiment results of Infineon IGBT-modules FS50R06W1E3 indicate that the conclusion of power dissipation is accurate and the thermal conduction model can compute the operating temperature of power device. The method can be used to evaluate the power driver of brushless EMA for estimating the operating temperature; this can avoid the temperature's exceeding the maximum junction temperature while improving effective output power. |
| Key words:
actuators
brushless DC motor
computer simulation
efficiency
electric currents
electric inverters
energy dissipation
estimation
experiments
heat conduction
heat sinks
insulated gate bipolar transistors(IGBT)
pulse width modulation
reliability
switching frequency
temperature
waveform analysis
brushless EMA
effective output power
H-PWM-L-ON
high power density
power dissipation
RC thermal network
thermal characteristics
thermal conduction model
three-phase bridge
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| 收稿日期: 2015-09-26
修回日期:
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| DOI: |
| 基金项目: 中央高校基本科研业务费专项资金(3102015BJ(Ⅱ)CG010)资助 |
| 通讯作者:
Email： |
| 作者简介: 高智刚(1982-),西北工业大学讲师,主要从事高性能电动伺服技术研究。
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| 相关功能 |
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| 作者相关文章 |
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| 高智刚 在本刊中的所有文章 |
| 李朋 在本刊中的所有文章 |
| 周军 在本刊中的所有文章 |
| 邓涛 在本刊中的所有文章 |
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参考文献: |
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