Rectifier drive vector control system based on self-commutated voltage inverter with relay regulator of input inverter current and current on stator phases
DOI:
https://doi.org/10.14529/power170207Keywords:
rectifier drive, self-commutated voltage inverter, relay regulator of stator current, transistor key with relay control, frequency converterAbstract
The given research paper delves into a rectifier drive vector control system based on a self-commutated voltage inverter with relay current regulators of a stator. The scope of application is the oil industry, high-precision electric drives of working machines. Application of the modern hardware components allowing to use new control algorithms expands the functional capabilities of the rectifier drive control systems and leads to energy saving. The frequency converter model with the self-commutated voltage inverter was designed and studied. The inverter was constructed on the basis of the IGBT transistors with the reverse diodes and relay regulators of the stator current. The IGBT transistor key is connected to the DC link. It helps to vary rectified current and power on the inverter input. This control system allows obtaining of the near-sinusoidal output voltage and the current curve form as well as the current on the stator winding terminals. The use relay current regulators reduces voltage ripples. The model of the researched system was created in the Mathlab Simulink software environment. Simulation results and analytic surveys are agreed and show that the control system complies with the specified requirements.
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