Firstly, this paper proposes a calculation method of the energy losses in the insulated gate bipolar transistor (IGBT) and freewheeling diode (FWD), and calculates the energy losses of the IGBT module in the inverter according to the method.
Accuracy in predicting average inverter heat-sink temperatures was typically ±3 °C. The difference between modeled and measured heat dissipation factors for different wind speeds was less than 10% for the tested inverters.
For switching losses, instantaneous values of turn-on and turn-off switching losses are used. For heat dissipation, the thermal model is created in the next step. This model uses values of thermal resistance of the device from manufacturer datasheet, and the value of thermal resistance of the used heatsink.
The temperature difference between the inverter components and the heat sink can be approximated by Alonso et al. (2012): (15) Δ T C = k ′ × P C where P C is the consumed power of each inverter component and k ′ is the heat transfer coefficient of the inverter component.
Simulation is using instantaneous values of the switching on and off energies, and saturation voltage VTce derived from device current and temperature conditions. When the losses generated by inverter are known from simulation, calculation of temperatures was performed with the help of the thermal model.
Compared to wind speeds of 0–0.1 m/s, the correlation of the fit between inverter temperature and CPR is much better for the wind speed conditions of 8 m/s. For high wind speeds, the rapid rate of heat diffusion allows the inverter to quickly reach steady state.
A method for modeling inverter temperature as a function of the operating conditions is proposed. A thermal model is demonstrated for predicting average inverter heat-sink temperatures. The three grid-connected inverters were tested to study heat dissipation factors in Colorado, US.
Firstly, this paper proposes a calculation method of the energy losses in the insulated gate bipolar transistor (IGBT) and freewheeling diode (FWD), and calculates the energy losses of the IGBT module in the inverter according to the method.
The overall benefit can be determined by analyzing the energy flow through components in an electrified transit system and hence determining the change in energy dissipations when energy storage ...
Based on the integrated model, the temperature field characteristics and heat transfer characteristics of the mine inverter are numerically simulated and analyzed.
Demanding accuracy and reliability of thermal design for high efficiency and high-power density inverter devices. Integrating heat conduction, convection heat transfer and fluid dynamics theories, a synthetical thermal model based on the characteristic length as the square root of the cross-sectional area and a multi-objective optimization method based on entropy yield …
Abstract: Demanding accuracy and reliability of thermal design for high efficiency and high-power density inverter devices. Integrating heat conduction, convection heat transfer and fluid dynamics theories, a synthetical thermal model based on the characteristic length as the square root of the cross-sectional area and a multi-objective ...
Firstly, this paper proposes a calculation method of the energy losses in the insulated gate bipolar transistor(IGBT) and freewheeling diode(FWD), and calculates the energy losses of the IGBT module in the inverter according to the method. Otherwise, a set of the inverter forced air cooling heat dissipation system is designed, and the ...
The simulation verifies the effectiveness of the heat dissipation-based design, and the results show that: the internal components of the mining explosion-proof inverter are not more than...
paper proposes a closed PV inverter structure based on heat pipe and liquid cooling which overcomes the noise, dust and other problems caused by traditional air-cooling heat …
Uneven heat dissipation will affect the reliability and performance attenuation of tram supercapacitor, and reducing the energy consumption of heat dissipation is also a problem that must be solved in supercapacitor engineering applications. This paper takes the vehicle supercapacitor energy storage power supply as the research object, and uses computational …
Therefore, reducing inverter loss leads to an inverter heat dissipation design, which can contribute significantly to reducing the failure of power semiconductor devices. To improve the loss reduction for an inverter''s thermal design, the first step is to analyze the inverter''s heat source losses. There are many types of inverter losses ...
With the trend of high integration and high power of insulated gate bipolar transistor (IGBT) components, strict requirements have been placed on the heat dissipation capabilities of the IGBT devices. On the basis of traditional rectangular fins, this paper developed two new types of heat-dissipating fins to meet the high requirements of heat dissipation for the …
Firstly, this paper proposes a calculation method of the energy losses in the insulated gate bipolar transistor (IGBT) and freewheeling diode (FWD), and calculates the …
The mine inverter has good heat dissipation performance. The temperature of IGBT module is the highest, the temperature of the bus bar assembly is the second, and the temperature of the DC filter capacitor assembly is the lowest. ② The power device in the process of charging has a larger loss. But because of the short charging time, the loss will not cause severe changes in …
Abstract: Demanding accuracy and reliability of thermal design for high efficiency and high-power density inverter devices. Integrating heat conduction, convection heat transfer and fluid …
The simulation analysis shows that the proposed thermal management method by changing switching frequency can effectively reduce the amplitude and average value of …
paper proposes a closed PV inverter structure based on heat pipe and liquid cooling which overcomes the noise, dust and other problems caused by traditional air-cooling heat dissipation method and reduces cost of the volume occupied inside the body. Heat is dissipated through heat pipes, which are efficient heat transfer units.
Free cooling refers to the realization of heat dissipation from local heating devices to the surrounding environment to achieve the purpose of temperature control without using any external auxiliary energy, which usually includes three main heat transfer methods: heat conduction, convection and radiation. Convection is the main method. Free heat dissipation or cooling is …
The simulation analysis shows that the proposed thermal management method by changing switching frequency can effectively reduce the amplitude and average value of IGBT junction temperature fluctuation in grid-connected inverters, decrease thermal stress, and improve the reliability of power modules.
The simulation verifies the effectiveness of the heat dissipation-based design, and the results show that: the internal components of the mining explosion-proof inverter are not more than...
The simulation verifies the effectiveness of the heat dissipation-based design, and the results show that: the internal components of the mining explosion-proof inverter are not more than 80°C ...
Based on the analysis, a heat dissipation system for the direct/alternating current (DC/AC) inverter using forced‐air cooling is designed, and the calculation results and the experimental...
This paper presents a model for evaluating the heat-sink and component temperatures of open-rack installed photovoltaic inverters. These temperatures can be used …
IGBT Energy Losses Analysis and Heat Dissipation System Design of Three-level Inverter. Liang Qi 1, Xu Wang 1 and Jiake Pan 1. Published under licence by IOP Publishing Ltd Journal of Physics: Conference Series, Volume 2260, 2022 International Conference on Electrical, Power and Grid Systems (ICEPGS 2022) 25/02/2022 - 27/02/2022 Online Citation Liang Qi et …
Firstly, this paper proposes a calculation method of the energy losses in the insulated gate bipolar transistor(IGBT) and freewheeling diode(FWD), and calculates the energy losses of the IGBT …
In this publication, instantaneous values of the collector current IC and collector-emitter voltage VCE are used for conductive losses calculation. For switching losses, instantaneous values of …
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