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In order to meet the new energy efficiency standards for air conditioners and achieve the major strategic goals of “double carbon” energy saving and emission reduction advocated by the country as soon as possible, inverter air conditioners are used in Today, with extremely high power consumption and electricity Rwanda Sugar Daddy, it is of very important strategic significance to further improve the energy efficiency of HVAC and economic benefits.
In the past ten years, silicon carbide MOSFETs have gradually been used in large quantities in switching power supplies, photovoltaic power generation, electric cars, high-speed rail, power grids and other fields. The reliability and cost-effectiveness have been greatly improved and fully verified by the market. A large number of facts It shows that a new era of third-generation semiconductors represented by silicon carbide has arrived.
New semiconductor technology represented by silicon carbide provides new opportunities for improving the comprehensive performance of heating, ventilation and air conditioning (HVAC)Road, it can not only further optimize system performance, but also significantly improve system efficiency, help HVAC reach or even exceed new energy efficiency standards, making HVAC more cost-effective.
Project introduction:
This project is provided by the technology designer of Huaqiang Electronic Industry Research Institute’s performance transformation and technology transfer service platform.
In order to cope with the new standards in the heating, ventilation and air-conditioning industry and the anxiety about the cruising range of electric cars in summer, the project planning company proposed a compressor controller solution based on a new power device silicon carbide MOSFET, Rwandans Escort and designed a 16kW class controller prototype for verification.
The verification results show that this project uses SiC MOSFET in the heating, ventilation and air conditioning system, which can not only significantly improve the system performance, but also has more advantages in terms of cost performance.
Better energy-saving effect: As can be seen from the figure below, silicon carbide MOSFET has no inflection point voltage, only a certain on-resistance, and the on-voltage has a linear relationship with the current, so the on-voltage drop and loss are greatly reduced. When the HVAC is operating under stable conditions, the compressor controller will work in light load or ultra-light load mode. The energy saving effect is better.
Figure 1 Silicon carbide MOSFET and Comparison of conduction characteristics of traditional silicon IGBT
Higher system efficiency: The project company’s R&D team uses open power consumption and efficiency iPowerSRwandans Escort iM simulation software simulates the 16kVA compression Rwandans Sugardaddy machine controller prototype. The prototype uses a 40mΩ, 1200V carbonized insulator from Wolfspeed Company. Silicon MOSFET. Simulation results show that even at a high switching frequency of 16kHz, the efficiency can be as high as 98.6%.
Figure 2 Power consumption and efficiency simulation of 16kW silicon carbide controller based on iPowerSiM simulation software
While increasing the switching frequency, the design prototype also appropriately reduced the The voltage change rate prevents the shaft current caused by the high dv/dt of silicon carbide and damage to the winding insulationRwandans Sugardaddy, even if this Generally speaking, the controller can still reach the peak efficiency of 98%, which is more than 0.5% higher than the efficiency of traditional silicon IGBT at full load, light load and ultra-lightRwanda Sugar Daddyload efficiency exceeds 1%-5%
Figure 3 Silicon carbide controller efficiency curve and comparison
Compatibility and cost control: In order to reduce costs, the design prototype also adopts the Bootstrap power supply mode commonly used in the air conditioning industry , and generates negative voltage for silicon carbide gate driving under the circuit and control strategy with independent intellectual property rights, which improves the gate reliability of silicon carbide MOSFET applications, while taking into account the usage habits, volume and cost control of the air-conditioning industry .
Application scenarios:
The technology of this project can be used in residential and commercial HVAC and electric car HVAC systems.
Commercial HVAC: prototype of this project. The cost of the C3M0040120K silicon carbide MOSFET used is almost close to that of the silicon IGBT module, which is better than the Rwandans SugardaddyIPM module. It achieves better performance while almost It does not increase the system cost and has extremely high application significance. If we also consider the cost reduction of the heat dissipation system and sound insulation system due to the use of silicon carbide devices, as well as the power consumption due to high efficiency and low loss, it is the most intuitive. The electricity bill has dropped, and the planned prototype has extremely high economic value.
Electric car utilization: Rwandans Escort Electric car after the rain in recent years. It grows vigorously like bamboo shoots, but in summerRwandans Sugardaddy The significant reduction in the cruising range of electric cars has been criticized by users. One of the reasons is that the heating efficiency of electric cars in summer is greatly reduced. It is completed by the PTC (Positive Temperature Coefficient) resistance heater. Even when the PTC’s COP (Coefficient Of Performance, heater unit power heating capacity) heating energy efficiency ratio is close to 1, the heating energy efficiency will still be RW Escorts About 30%-50% of the battery power is used for heating, which will of course result in a significant extension of the cruising range. However, if a wide temperature range, high-efficiency silicon carbide heat pump air conditioning system is used, the energy efficiency can be reduced by more than 60%. The energy efficiency ratio COP under summer heating conditions can reach 2-4, which is the highest number of current PTC heating methods. times, which can increase the winter cruising range by up to about 25%.
Technical advantages:
System efficiency increased by 1%-5%
Energy loss reduced by 40%
Switching frequency increased by 100%-200%
Dead zone time reduced by 60%
Good energy saving effect
p> Independent research and development
Stable performance
Support customized development
Rwanda Sugar Daddy Product sample:
Review Editor Huang Haoyu
Understands the short-circuit protection method for silicon carbide Rwanda SugarMOSFET Electronics enthusiast website provides ” Understand the short-circuit maintenance methods for silicon carbide MOSFET.pdf》The material is free to download and awardedPosted on 09-02 09:10 • 0 downloads
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This article explains the application and performance advantages of SiC silicon carbide MOSFET. Read a good book together. Silicon carbide is an important basic material for the development of the third-generation semiconductor industry. Silicon carbide power devices are known for their excellent resistance to high voltage, low temperature, LowRW Escorts performance such as low loss can effectively meet the high efficiency, miniaturization and lightweight requirements of power electronic systems. Silicon carbide MOSFET Published on 02-21 18:24 •1135 views
Introduction to silicon carbide characteristics process module Silicon carbide (SiC) is a wide bandgap Semiconductor materials have the advantages of high thermal conductivity, high breakdown field strength, high saturation electron drift velocityRW Escorts and high bonding energy. Due to these excellent properties, silicon carbide has broad application prospects in power electronics, microwave radio frequency, optoelectronics and other fields. However, due to issued on 01-11 17:33RW Escorts •663 Views
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