Thermal Analysis of EPAS Power Module

2001 ◽  
Author(s):  
Ram Farhi
Keyword(s):  
Thermal Response ◽  
Junction Temperature ◽  
Brushless Dc Motor ◽  
Voltage Measurement ◽  
Power Module ◽  
Brushless Dc ◽  
Fea Model ◽  
Design Changes ◽  
Three Phase ◽  
Three Phase Inverter

Abstract The continuous improvement of robust design for reliability is possible by the implementation of Finite Element Methods (FEM). Thermal response of a chip-and-wire power module was studied to verify and optimize the design. The power module drives a three-phase Brushless DC motor in an Electric Power Assisted Steering (EPAS) system. It has a power output of ∼1.5kW with a peak current of 125A and with thermal efficiency of 86%. The three-phase inverter is built with 12 dies (2 parallel FETs per switch), and it is constructed on an Insulated Metal Substrate (IMS) and copper lead frame. The FEA model was verified experimentally using a Forward Looking Infra Red (FLIR) system and a threshold voltage measurement for the junction temperatures. Experimental and FEA results show the peak junction temperature is less than 130°C and the thermal resistance is 1.2C/W. In addition to design changes and refinement of process prior to fabrication, the FEA approach enabled the study of competing design approaches without sacrificing valuable time.

The Study of Comparative Characterization between SiC MOSFET and Si- IGBT for Power Module and Three-Phase SPWM Inverter

2020 ◽  
Vol 1004 ◽  
pp. 1045-1053
Author(s):  
Heng Lee ◽  
Chun Kai Liu ◽  
Tao Chih Chang
Keyword(s):  
Ambient Temperature ◽  
Junction Temperature ◽  
System Level ◽  
Switching Frequency ◽  
Power Module ◽  
Ambient Temperatures ◽  
Three Phase ◽  
Type Power ◽  
Three Phase Inverter ◽  
Better Than

This paper focuses on how to define and integrate the system level and power module level with optimal conditions in SiC and Si-IGBT. To investigate the above situation, we compare the performance of SiC and Si-IGBT in power module and system level at different ambient temperatures. At the same maximum junction temperature 150°C and ambient temperature at 25°C and 80°C, it found that SiC type electrical resistance, maximum endurable current, and voltage could be better than the IGBT type power module above 20%. On the other hand, the simulation of three-phase inverter at different switching frequency such as 10kHz, 15kHz, 20kHz, 30kHz and it had been observed that the power loss of SiC inverter are 78% less for 10kHz switching frequency; 82% less for switching frequency at 15kHz; 85% less for 20kHz of switching frequency; 89% less for switching frequency at 30kHz in the Si-IGBT three-phase SPWM inverter at ambient temperature 80°C.

scholarly journals Forced-Air-Cooled 10 kW Three-Phase SiC Inverter with Output Power Density of More than 20 kW/L

2011 ◽  
Vol 679-680 ◽  
pp. 738-741 ◽  
Author(s):  
Shinji Sato ◽  
Kohei Matsui ◽  
Yusuke Zushi ◽  
Yoshinori Murakami ◽  
Satoshi Tanimoto ◽  
...  
Keyword(s):  
Power Density ◽  
Output Power ◽  
Junction Temperature ◽  
Power Module ◽  
Phase Inverter ◽  
Design Specifications ◽  
Three Phase ◽  
Temperature Operating ◽  
Forced Air ◽  
Three Phase Inverter

A forced-air-cooled three-phase inverter built with SiC-JFETs and -SBDs as power semi-conductor devices was designed and fabricated. The inverter can operate steadily at a rated power of 10 kW in a junction temperature range up to 200°C. Output power density of more than 20 kW/L was achieved. The design specifications, the power module fabrication process, the results of a high-temperature operating test and a continuous switching test are described in turn.

Analysis of Controllers for Photovoltaic Fed Brushless DC Motor Based Water Pumping System

2015 ◽  
Vol 787 ◽  
pp. 838-842 ◽  
Author(s):  
M. Pandikumar ◽  
R. Ramaprabha ◽  
Ranganath Muthu
Keyword(s):  
Maximum Power ◽  
Brushless Dc Motor ◽  
Maximum Power Point ◽  
Brushless Dc ◽  
Pumping System ◽  
Pulsewidth Modulation ◽  
Water Pumping ◽  
Three Phase ◽  
Power Point ◽  
Three Phase Inverter

The paper proposes a comparative analysis of brushless DC (BLDC) motor based photovoltaic (PV) water pumping system with two different controllers namely the proportional-integral (PI) and the fuzzy. The controllers are designed such that the maximum power is extracted from the PV source with the incremental conductance (INC) algorithm. The controlled output is given to the boost converter, which acts as the maximum power point tracker (MPPT). It is followed by the three-phase inverter supplying the BLDC drive system. The constant speed operation is achieved via the spacevector pulsewidth modulation (SVPWM) technique in order to obtain constant throughput from the centrifugal pump. The performance of the system is analyzedwithMatLab/Simulink.It is shown that the fuzzy control provides better response then the PI control.

Design and Modeling of Photovoltaic System Fed Brushless DC Motor

2013 ◽  
Vol 768 ◽  
pp. 136-142 ◽  
Author(s):  
M. Pandikumar ◽  
R. Ramaprabha ◽  
Ranganath Muthu
Keyword(s):  
Operating Conditions ◽  
Photovoltaic System ◽  
Brushless Dc Motor ◽  
Modulation Scheme ◽  
Maximum Power Point ◽  
Brushless Dc ◽  
Three Phase ◽  
Power Point ◽  
Vector Modulation ◽  
Three Phase Inverter

The objective of this work is to make a study of the photovoltaic generator and converters used to supply a brushless DC machine actuating a centrifugal pump. This will be carried out by modeling and simulation of the various stages that constitute the overall system, which includes the photovoltaic source, the maximum power point tracker and the three-phase inverter with the space vector modulation scheme The simulation has been carried out using MatLab-Simulink and the results are presented for different operating conditions.

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