Power quality SVG cooling solution

The static reactive power compensation device (SVC) is a kind of important equipment for comprehensively controlling voltage fluctuation, flicker, harmonic and voltage imbalance. SVG is a new static reactive power compensation device which is more advanced than SVC. It is an important part of FACTS technology and custom power (CP) technology. It is the development direction of modern reactive power compensation device. They are widely used in power transmission and distribution systems: long-distance power transmission, urban secondary substation (35/110kv), arc furnace, mill hoist and other heavy industry loads, regional power grid, pv power supply, wind farm, electric locomotive power supply and other fields. SVG is a high-heat element, which needs to be combined with a radiator with excellent heat dissipation performance to ensure the stable operation of other elements and increase the working time.

Ambient temperature：	40℃	Style and type：	R4D560-AQ03-01
Altitude：	3000m	Overall temperature requirements：	<35℃
Assume IGBT model：	Infineon IHV IGBT，1250W/pcs，Common2pcs, Resistor body100W， total 2600W.	Heat Dissipating Medium Model：	I0.2mm K=4W/m*K
Module Power and Number：	7，Total power is2600*7=18200W

Item	Maximum temperature℃	Inlet wind speed m/s	Thermal Resistance C/W	Radiator simulation data show that the temperature is all in 75℃ Below, the temperature rise is less than 35 degrees Celsius, which meets the requirements set by customers.
Module1	74.56	5.4	0.0133
Module2		5.39	0.013
Module3	74.52	5.4	0.013
Module4	74.72	5.36	0.013
Module5	74.56	5.56	0.013
Module6	74.63	5.58	0.013
Module7	74.43	5.58	0.013