A series water cooling radiator based on damping resistance

Abstract

A serial water-cooled heat sink based on a damping resistor, the heat sink comprising a heat sink body, a thyristor and a resistor. The heat sink body comprises an aluminum panel, a heat sink cavity comprising a water channel and water channel wall, a water inlet and a water outlet; the thyristor conforms to the surface of the aluminum panel; the water inlet and water outlet are respectively disposed on the top and bottom of the heat sink body; two heat sink cavities are disposed inside the aluminum panel; and the resistor is disposed inside the water channel wall.

Description

technical field [0001] The invention relates to a radiator, in particular to a series water-cooled radiator based on damping resistance. Background technique [0002] The rapid development of UHV DC technology has played an important role in the optimal allocation of energy in my country. The UHV DC converter valve in the project uses multiple thyristors in series for commutation, and uses a damping circuit connected in parallel at both ends of the thyristors to solve the problem. Its pressure equalization problem. After the damping capacitor accumulates energy, it releases it in the form of pulses and consumes it on the damping resistor connected in series. Therefore, the damping resistor needs to have good pulse power tolerance and heat dissipation. [0003] There are mainly two heat dissipation methods for the damping resistor of the converter valve currently in use: one adopts the indirect water cooling method, firstly, the heat is transferred to the surface of the radi...

AI Technical Summary

Problems solved by technology

[0003] There are mainly two heat dissipation methods for the damping resistor of the converter valve currently in use: one adopts the indirect water cooling method, firstly, the heat is transferred to the surface of the radiator in contact with the damping resistor, and then the heat is taken away by the circulating cooling water inside the radiator ;The indirect water cooling method is to insert the damping resistance rod into the radiator, and dissipate heat indirectly through the cooling water in the radiator. The disadvantages of this method are: first, the heat dissipation capacity is weak; second, the radiator volume is relatively large Large; Third, the radiator consumes a lot of water

The heat dissipation capacity of the direct water cooling method is higher than that of the indirect cooling method, but it still has its limitations: first, since the metal resistance is in direct contact with water, a special anti-corrosion electrode is required, which increases the complexity of the structural design; second, The water capacity of the waterway is small, the dry burning ability is poor, and the cut-off time is generally less than 3 seconds; third, the shell material is PVDF, and its pressure resistance is worse than that of metal materials

Fourth, the design of the thyristor and the damping resistor radiator are independent, which not only increases the overall size of the structure, but also reduces the reliability of the waterway connection due to the large number of connection interfaces

[0004] The thyristor consumes a lot of power during operation, resulting in high junction temperature

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