scholarly journals Power Loss Model and Efficiency Analysis of Three-Phase Inverter Based on SiC MOSFETs for PV Applications

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 75768-75781 ◽  
Author(s):  
Mohammed Hassan Ahmed ◽  
Mingyu Wang ◽  
Muhammad Arshad Shehzad Hassan ◽  
Irfan Ullah
Keyword(s):  
Power Loss ◽  
Efficiency Analysis ◽  
Loss Model ◽  
Phase Inverter ◽  
Three Phase ◽  
Three Phase Inverter

scholarly journals A Simple Method to Validate Power Loss in Medium Voltage SiC MOSFETs and Schottky Diodes Operating in a Three-Phase Inverter

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4773
Author(s):  
Jacek Rąbkowski ◽  
Hubert Skoneczny ◽  
Rafał Kopacz ◽  
Przemysław Trochimiuk ◽  
Grzegorz Wrona
Keyword(s):  
Power Loss ◽  
Schottky Diodes ◽  
Duty Ratio ◽  
Inductive Load ◽  
Simple Method ◽  
Phase Inverter ◽  
Medium Voltage ◽  
Three Phase ◽  
The Impact ◽  
Three Phase Inverter

This paper presents an original method of power loss validation in medium-voltage SiC MOSFET (metal–oxide–semiconductor field-effect transistor) modules of a three-phase inverter. The base of this method is a correct description of the on-state performance of the diodes and the transistors in a PWM (pulse width modulation)-controlled inverter phase leg. Combined electro-thermal calculations are applied to precisely estimate the losses in the power devices and then, to find the suitable circuit parameters of a test circuit to emulate these conditions. A simple square-wave-controlled half-bridge with an inductive load enables the electrical and thermal stresses comparable to these in the inverter, and moreover, provided equations that confirmed the possibility of balancing the load between the diodes and the transistors. The circuit with 3.3 kV SiC MOSFETs was tested to verify the impact of selected parameters on power losses with the main focus on duty ratio. The same module was applied, in addition to an inductive load (3 × 112 μH) and two sets of DC-link capacitors (750 μF), to validate a phase leg of a 220 kVA inverter. In spite of a significantly apparent power, the active power delivered from the DC supply settled around 1 kW, which was enough to emulate 390 W of losses in two transistors and diodes.

Efficiency Analysis for a Two-Stage Three-Phase Inverter

2014 ◽  
Vol 986-987 ◽  
pp. 1958-1962
Author(s):  
Pan Geng ◽  
Yin Zhong Ye ◽  
Wei Min Wu ◽  
Yi Jian Liu ◽  
Shi Long Xue
Keyword(s):  
Calculation Method ◽  
Efficiency Analysis ◽  
System Efficiency ◽  
Power Losses ◽  
Two Stage ◽  
Phase Inverter ◽  
Efficiency Calculation ◽  
Second Stage ◽  
Three Phase ◽  
Three Phase Inverter

This paper takes a two-stage three-phase inverter as an example. The efficiency calculation method is analyzed in detail for the inverter, and the power losses calculation method is proposed for the second stage under SVPWM. A 10kW/380V inverter system is designed. The system efficiency and the power losses for every part are theoretically calculated. Finally, experiments on a 10 kW prototype are carried out to verify the calculation.

Sign in / Sign up

Export Citation Format

Share Document