Abstract
The paper deals with design of switching and control strategy of 2-stage combine LLC- and matrix converter, supplied from DC voltage source. It also deals with comparison of the four different switching control modes: phase-mode control, sinusoidal PWM mode control, pulsedepletion mode control and packet-mode control. Numerical harmonic analysis for total harmonic distortion is used. Simulation and preliminary results of experimental verification are given in the paper.
Highlights
It’s known that direct converters can be operated from AC network by voltage with relative low frequency of 50, 60, 100, 400 Hz using triac- switches with phasecontrol
Matrix converters with fast IGBT and MOSFET switching devices can operate with relatively high frequencies of tens- up hundreds kHz
The second stage matrix converter can be in half- or full bridge connection
Summary
It’s known that direct converters can be operated from AC network (or generator) by voltage with relative low frequency of 50-, 60-, 100-, 400 Hz using triac- (or thyristor) switches with phasecontrol. Matrix converters with fast IGBT and MOSFET switching devices can operate with relatively high frequencies of tens- up hundreds kHz. The AC voltage source can be effectively created by LLC type resonant converter. Galvanic insulation and increase battery voltage to the rate value for the motor. LLC resonant converters work at switching frequency of 10- up hundreds kHz and must be synchronized each to other
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