GoodWe Advantages in Thermal Design of MT Series

ADVANTAGES OF THERMAL DESIGNOF MT SERIES

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Figure 1. Heating Effect

Figure 2. Temperature Derating Curve

The working temperature range of GoodWe MT series at full load is -30℃ ~ 50 ℃. Inverter’s output at nominal power is guaranteed even when it works at ambient temperature of 50℃. When the ambient temperature is higher than 50℃, inverter would start to reduce the output power. In some scenarios with higher ambient temperature, inverter can still generating normally.

VER: 01, UPDATED ON JANUARY 09TH , 2020

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of solar power plant would be afftected especially in hot summer days and in areas with constant high temperature.range and the temperature derating curve because inverter would reduce or even stop output at very high temperature. Production overall performance. So much so that a great number of customers would pay attention to inverter’s operating temperature Inverter as a crucial unit in any solar system, its heat dissipation performance has always been taken as an important index of

Why Thermal Design Is Important?

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ADVANTAGES OF THERMAL DESIGNOF MT SERIES VER: 01, UPDATED ON JANUARY 09TH , 2020


In addition to the excellent performance in heat dissipation of MT series, it stands out from its kinds due to the compact design. For example, model GW50KN-MT with dimensions 586*788*264 (W*H*D, mm) weights only 72kg.

Next, we focus on the thermal design to have inverter with excellent heat dissipation performance from three aspects.

Components such as IGBT that produce a lot of heat in operation are placed onto the radiator and heat is transferred through coolant to heat sink. External fans are used to dissipate heat from heat sink. In this way overall heat dissipation performance is improved.

1. Excellent Heat Transfer Designa. Easily heating components are deployed in a centralized way

What Is GoodWe Thermal Design?

Figure 3. GoodWe MT Series

Figure 4. Heating Component Distribution

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Figure 5. Air Duct of MT Series

Figure 6. Independent Air Duct from Case Body

ity of heat dissipation are improved as well.tally which decreases the risks of foreign matters intrusion, and thus decreases the failure rate of fan. The performance and reliabil- no twist nor turn in the air duct which guarantees no obstacles in wind speed and pressure. Moreover, the air duct is placed horizon- External fans are installed on the left side as shown in red square in Figure 5 and air outlet is on the right side of inverter. There is

Straightforward air duct designb.

and also IP65 protection level of the inverter for the sake of reliable operation outdoors.The junction between air duct and case body is sealed by silica gel. Such independent design ensures heat dissipation performance

Independent air duct designC.

Case Body

Sealed Silica Gel

Radiator


Based on internal temperature, detected from case body and modules, operation status of fans are changed accordingly. When internal temperature reaches a certain point, the fans starts to work and change rotation speed and when internal temperature reaches another point, the fans stops to save energy. The advantages of smart cooling system control are as follow.

a. The working time of fans are reduced while the cooling effects untouched. And generation is increased as power loss by fan is mitigated. b. Noises during operation is mitigated.c. Running time of fan is reduced and thus the lifespan is extended to improve the reliability of heat dissipation.

Reliable and stable fans from NMB, a worldwide prestigious brand, are applied in the cooling system of MT series.

2. Smart Cooling System Control

3. Application of High-quality Fan

Figure 7. Lifetime of NMB Fan


environment with salty fog without being corrupted.The fan itself is of IP68 protection and anti-corrosive with epoxy resin. As shown in figure 8, fan with epoxy can work normally in without any worry of malfunction.The service life of NMB fan is up to 100 000 hours at ambient temperature of 40℃, which means it can work as long as 11 years

Conclusion

The heat dissipation performance of GoodWe MT series is guaranteed by the excellent air channel design, smart cooling system control and deployment of high-quality components. The inverter can operate in normal status and ensure genera-tion for customers even in hot summer day of tropical areas.

NoticeThe information in this document is subject to change without notice, all information in this document do not constitute any kind of warranty. Please check with GoodWe Solar Academy '[email protected]' for the latest version.

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In a fact, the heat dissipation performance of inverter stays stable under various conditions with high-quality fan.

Figure 8. Fan Status Comparison

Fan of IP55, without epoxy resin Fan of IP68, with epoxy resin


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GoodWe Advantages in Thermal Design of MT Series