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                Dongguan skived fin heat sink vendor


            

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                Dongguan PV inverter heat sink


            

                PV inverter heat sink vendor


            

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                Custom SVG heat pipe thermal module


            

        
            


    
            



            

            


    
            


        


            


        


    
            



            

            

 
            







     
    
            
    
    

            



            

            Inverters are also called power regulators. The process of converting DC power into AC power is called invert. The circuit that can realize the inverting function is called an inverter circuit. A device that can realize the inverting process is called an inverting device or inverter. In a solar energy generation system, the inverter efficiency is an important factor that determines the solar cell capacity and the storage battery capacity. The breakdown of PV inverter will cause the PV system to shut down and this directly leads to the loss of power generation. Therefore, high reliability is an important technical indicator for PV inverters.
            
The good cooling of PV inverters is an important criterion to ensure the high reliability of its operation. Therefore, it is recommended to carry out thermal simulation in the beginning of PV inverter's design stage and this has become the first issue to be considered by PV inverter manufacturers. As one of the professional high power cooling manufacturers in China, Winshare Thermal has an outstanding thermal design and development team, which owns the capability of carrying out reliable thermal simulation and testing. We have collaborated with several domestic and overseas PV inverter manufacturers on the cooling technology for inverters and have been supplying services and supports with our professional cooling technology.
            




            

            Schematic of the simulation model and parameters (1):
            
Ambient temperature: 55?C; reactor heat load: 700W
            


             
            


            Assuming a system impedance of 80 Pa, the fan curve through the heat sink can be adjusted as follows.
            


            Schematic of the simulation model and parameters (2):
            



            

            

            

            
The top left figure is the schematic of the internal structure and heat-dissipating devices of the Infineon IGBT
            
Diode：59W； IGBT：124.5W； Total：1100WW；
            
Assuming the thermal interface material is 0.15mm thick with a thermal conductivity of K=3W/m*K
            


             
            


            Schematic of the simulation model of the heat sink solution and its parameters:
            


            Heat sink parameters:
            
Dimensions: W236*L200*H304mm
            
Fin :
            
Thickness: 0.6mm
            
Fin gap: 3.0mm
            
Fin count: 77fins
            
Heat pipe parameters:
            
DD8 sintered tube or groove structure;
            
24 pcs of U-shaped heat pipes (single-layer layout) and 48 pcs of L-shaped heat pipes (dual-layer layout) are used
            
4258 low-temperature solder paste is used for soldering;
            
Base: Al plate + copper plate (IGBT heat source area)
            
The design with a single layer of heat pipes has a lower cost and higher cooling performance as compared to dual layers of heat pipes.
            


             
            

            


            

            

            Schematic of the simulated cross-sectional pressure distribution in the thermal module:
            

            


            

            Schematic of the simulated cross-sectional velocity distribution in the thermal module:
            

            


             
            

            


            

            

            Schematic of the simulated cross-sectional temperature distribution in the thermal module:
            

            


            

            Schematic of the simulated temperature distribution on the top layer of heat pipes:
            

            


            (The temperature difference between both ends of the heat pipe is 5.7℃, which meets the practical criteria for heat pipes.)
            


             
            

            


            

            

            Schematic of the simulated temperature distribution on the bottom layer of heat pipes:
            


            (The temperature difference between both ends of the heat pipe is 9℃, which is slightly higher than the real scenario. The actual performance of the heat pipes will be better than those configured in this analysis.)
            

            


            

            Schematic of the simulated temperature distribution on the bottom side of the heat sink:
            


             
            


            (The actual air temperature entering the heat sink is ~57.1?C and the maximum temperature at the heat sink bottom is 85.1?C with a temperature difference of 28?C according to the theoretical analysis.)
            

            

            


             
            


            

            Schematic of the simulated temperature distribution on the NTC module:
            

            


            

            Schematic of the fan operating point:
            

            


             
            


            (The temperature difference between both ends of the heat pipe is 9℃, which is slightly higher than the real scenario. The actual performance of the heat pipes will be better than those configured in this analysis.)
            


            Summary of the simulation data of the cooling solution for the PV inverter:
            


            
	
		
            
			
			
            Solution
            
			            		
			
			
            Ta
            
			            		
			
			
            Power
            
			            		
			
			
            H.S  
            
			Tb max
            
			            		
			
			
            H.S  
            
			DT
            
			            		
			
			
            NTC1
            
			            		
			
			
            NTC2
            
			            		
			
			
            NTC3
            
			            		
			
			
            Fan 
            
			working point
            
			            		
		
            
		
            
			
			
            Al base+
            
			copper block
            
			            		
			
			
            55
            
			            		
			
			
            IGBT/3pcs
            
			1100W/each
            
			Reactor
            
			700W
            
			            		
			
			
            85.1
            
			            		
			
			
            28
            
			            		
			
			
            87.6
            
			            		
			
			
            88.1
            
			            		
			
			
            87.5
            
			            		
			
			
            1127.5
            
			m^3/Hr
            
			215Pa
            
			            		
		
            
	            

            


            Assuming a system air inlet temperature of 55?C, the temperature of the air leaving the reactor is 57.1?C. Assuming a thermal interface material of 0.15mm thick with a thermal conductivity of K=3W/m*K is used.)
            

            


            


            


            


            



    
            



        


        
            



            







            
            



                
            



                    



                        



                    



                
            



                
            



                    
            



                        The voice of Winshare Thermal: credit and word



                    
            



                    
            

Winshare Thermal Ltd. (hereinafter referred to as Winshare Thermal) was founded in 2009. We specialize in the research and development, production and technical services of high power cooling solutions. We are devoted to becoming the leader in the thermal...



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