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THE MODULATION AND CONTROL OF A MATRIX CONVERTER - SYNCHRONOUS MACHINE DRIVE
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| Author(s) |
T. Svensson; M. Alaküla |
| Abstract |
In this paper the control of a matrix converter - synchronous machine drive is presented. The control strategy of the machine is based on direct flux control and quadrature current control to obtain optimal dynamics even under saturated conditions. Unity power factor in steady state is obtained by field current control. No position or speed transducers are required since the rotor position is calculated from stator and field currents with harmonic analysis. The output voltage of a nine-switch matrix converter (forced commutated cycloconverter) is pulse modulated in a similar way as the dc-link VSI. With a 2-level PWM strategy a less complicated modulation equipment is required. However, the current on the input side of the converter is not sinusoidally pulsed. A 3-level PWM strategy is presented which gives sinusoidally pulsed input current and furthermore unity input displacement factor. All presented PWM methods have maximum output voltage ability. Simulations and experimental results are presented. |
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| Filename: | Unnamed file |
| Filesize: | 4.529 MB |
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| Type |
Members Only |
| Date |
Last modified 2019-08-01 by System |
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