Effect of high-thermal conductivity epoxy resin on heat dissipation performance of saturated reactor

Li, Xiangyu; Zha, Jun‐Wei; Wang, Si-Jiao; Zhong, Shao‐Long; Zhang, Chong; Dang, Zhi‐Min

doi:10.1109/tdei.2017.006873

Cited by 20 publications

(11 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…If epoxy material with a higher thermal conductivity can be used, the HST can be reduced and the radial temperature may be more even. According to previous researchers [17,27], nanoparticles such as graphite can be mixed into epoxy to improve its thermal conductivity. A thermal conductivity of 0.7 W/ (m•K) can be achieved at about 20% of the impurity concentration.…”

Section: Increasing Thermal Conductivity Of Rip Materialsmentioning

confidence: 99%

“…It is not yet known whether the methods discussed above can be applied to improve the distribution of electro-thermal coupled field in the ±1100 kV converter valve-side bushing under high-ambient-temperature and high-current conditions. In addition, it is reported that the material modification technology can significantly reduce the temperature gradient of dry-type transformer and dry-type reactor [16,17], which is also worth studying for the bushing.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation on distribution of electro‐thermal coupled field and improved design of ±1100 kV converter valve‐side bushing

Liu

Chen

Liang

et al. 2020

IET Science, Measurement & Technology

View full text Add to dashboard Cite

Section: Increasing Thermal Conductivity Of Rip Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation on distribution of electro‐thermal coupled field and improved design of ±1100 kV converter valve‐side bushing

Liu

Chen

Liang

et al. 2020

IET Science, Measurement & Technology

View full text Add to dashboard Cite

“…A saturable reactor involves winding and iron cores. The total heat of such a reactor comprises the winding loss and the iron core loss [16, 17]. The winding loss depends on the DC resistance of the winding and the winding current, which can be expressed as [16]

P_{winding} = \frac{1}{T} \int_{0}^{T} I^{2} false(t false) R normald t

in which T is the period, I is the current, and R is the resistance of the aluminium winding.…”

Section: Theoretical Analysismentioning

confidence: 99%

“…Prediction and analysis based on heat conduction theory show that the high thermal conductivity of the epoxy encapsulation layer will increase the heat dissipation of the iron core and thus reduce its temperature, or that of the running saturable reactor, and vice versa. When the thermal conductivity of the epoxy encapsulation layer is greater than 1.0 W/mK, the iron core temperature can meet the current operating conditions [16, 17].…”

Section: Introductionmentioning

confidence: 99%

Heat dissipation characteristics of anode saturable reactors with high thermal conductivity epoxy resin used for ultra‐high‐voltage direct current converter valves

Yang

Chen

Yuan³

et al. 2020

High Voltage

View full text Add to dashboard Cite

A saturable reactor is one of the important components of converter valves in high‐voltage direct current transmission systems. With the ever‐increasing capacities of converter valves, the heat losses generated by saturable reactors are also increasing. Thus, a thermal–fluid mechanics coupled heat dissipation model for saturable reactors is proposed. In order to study the factors affecting the thermal dissipation in the saturable reactor, the epoxy resin insulating layers with different thermal conductivity were considered in this work. The simulation results showed that the hot spots in the saturable reactor are on the iron core and close to the pipe inlet that most of the generated heat can be extracted by a cooling pipe and that the effect of heat dissipation can be improved by raising the thermal conductivity of the epoxy resin. The thermal conductivities of the epoxy resin used in the two reactors were 0.8 and 1.2 W/mK, respectively. The time dependence of the iron core temperature was in accordance with the simulation results and the maximum temperatures of the saturable reactor were also consistent with the simulation results. By increasing the thermal conductivity of the epoxy insulation layer, the temperature of the iron core could be significantly reduced.

show abstract

“…Yu [11] investigated the thermal accumulation and diffusion process of coaxial cylinder pulse inductor with natural cooling mode by developing the 3D transient heat transfer model, and built a pulse inductor experimental rig to validate the model. Li [12] established a 3D fluid-solid coupling heat dissipation model for the saturated reactor, and researched the effect of thermal conductivity of epoxy resin on heat dissipation performance of saturated reactor. Tong [13] presented a pulse inductor with a circular multi-winding structure with epoxy resincasting technique, and studied its electromagnetic force, temperature distribution and fatigue behavior by building 3D finite element analysis model.…”

Section: Introductionmentioning

confidence: 99%

Thermal Analysis of the Pulse Inductor for Electromagnetic Launch Under Continuous Discharge Condition

2021

IEEE Access

View full text Add to dashboard Cite

The solenoid pulse inductor is a key component of the electromagnetic launch (EML) system, and effective thermal management is a necessary condition for reliable and stable operation under continuous discharge condition. A 3D transient coupling heat transfer model for the solenoid pulse inductor with liquid cooling mode was established, and the temperature distribution and the characteristics of heat dissipation of the inductor under continuous discharge condition has been analyzed. A temperature measurement system was designed, and the accuracy of the 3D coupling model has been verified. In addition, effects of the flow rate, the inlet temperature and the coolant on the efficiency of liquid cooling were analyzed by using this model. The results show that during continuous discharge, the maximum temperature and maximum temperature difference of the inductor continue to increase, but the rising speed rapidly slows down. Raising the flow rate can effectively improve the efficiency of the liquid cooling and decrease the temperature difference in the inductor during continuous discharge, but the marginal benefit of raising the flow rate is gradually reduced. Dropping the inlet temperature has little effect on the efficiency of the liquid cooling, and ethylene glycol solution can replace deionized water as the liquid cooling coolant for the pulse inductor under low temperature condition. This paper is expected to help to improve the thermal management and optimize the performance of the solenoid pulse inductor.INDEX TERMS continuous discharge, electromagnetic launch (EML), numerical analysis, pulse inductor, thermal analysis

show abstract

Effect of high-thermal conductivity epoxy resin on heat dissipation performance of saturated reactor

Cited by 20 publications

References 25 publications

Investigation on distribution of electro‐thermal coupled field and improved design of ±1100 kV converter valve‐side bushing

Investigation on distribution of electro‐thermal coupled field and improved design of ±1100 kV converter valve‐side bushing

Heat dissipation characteristics of anode saturable reactors with high thermal conductivity epoxy resin used for ultra‐high‐voltage direct current converter valves

Thermal Analysis of the Pulse Inductor for Electromagnetic Launch Under Continuous Discharge Condition

Contact Info

Product

Resources

About