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1 Maszyny Elektryczne : zeszyty problemowe

1 2005

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Przekształtniki energoelektroniczne AC/DC/AC i AC/AC - układy topologiczne i sterowanie

Pieńkowski K., Knapczyk M.

Maszyny Elektryczne : zeszyty problemowe

2005

Nr 72

247-252

Most variable-speed drive systems use an AC/DC/AC or AC/AC power conversion procedure. Currently, standard adjustable speed drives consist of a diode rectifier and a PWM voltage source inverter. Another alternative is controlled rectifier and a current source inverter. Today, due to the increased use of power electronics appliances and converters, the quality of power in the majority of the ac supply systems is reducing. Nonlinear currents drawn from the utility grid by those equipments imply mains voltage distortion and other problems resulting in harmonic pollution and electromagnetic interference implications. The paper presents a survey the most popular traditional and modern topologies of power electronics systems of converters used for adjustable speed AC motors. The topologies of front end rectifiers and motor inverters are presented. The special attention is paid for double-sided converters, multilevel converters, cascaded converters and dual inverter fed open-end stator winding of induction motor. The topologies of recently developed AC/AC and AC/DC/AC matrix converters are also discussed. The control systems and performance of presented converters is described.