Hálózatszennyezést megszüntető impulzusszélesség-modulációs áramirányítók fejlesztése = Network pollution free solution with pulsewidth-modulated rectifiers.

Elkeszultek a halozatbarat atalakitok szimulacios programjai (egy- es haromfazisu betaplalasra, valamint a motor es a halozati oldali inverter kulonboző szabalyozasi algoritmusokra). Megvizsgaltuk a halozati es a motor oldali inverterterek hiszterezises ISZM aramszabalyozasat, illetve a vivőfrekvencias ISZM modszereket a hajtas mind motoros, mind generatoros uzemere. Irodalmi es kutatasi szinten foglalkoztunk a haromszintű invereterek alkalmazasaval is. Kifejlesztettunk es uzembe helyeztunk egy halozatbarat frekvenciavalto berendezest. A motor oldali inverter mezőorientalt szabalyozasu, mig a halozat oldali inverter biztositja a kozbenső egyenfeszultseg szabalyozasat, valamint a halozati aram kozel szinuszos alakjat, illetve a halozati meddő teljesitmeny zerus erteket. Uzembe helyeztunk egy CEGELEC gyartmanyu halozatbarat hajtasvezerlő berendezest is, amely regebben kerult a tanszekre. A hajtas vezerlese mikroprocesszoros, kezelese szamitogepes iranyitasu. A szimulacios programokat es a berendezeseket felhasznaltuk a nappali tagozatos hallgatok gyakorlatainal es onallo laboratoriumhoz, valamint tudomanyos munkahoz. A meresi es kutatasi eredmenyek tobb diplomatervben, ill. meresi jegyzőkonyvben, illetve 15 cikkben foglaltuk ossze. A laboratoriumi meresi utasitas elkeszult. Jelentős előreleptunk az irodalmi es elmeleti kutatomunkaban az aramgeneratoros taplalasu es ISZM vezerlesű halozati aramiranyitok teruleten. Az eredmenyekről ket cikkben szamoltunk be. | The simulation programs for network pollution free PWM rectifier of ac drives (for single or three phase networks and for several control algorithms of the motor and network side inverters) were worked out. The drives were investigated for both the motor and the generator operation modes as well for current two-point PWM methods and for different carrier-based PWM ones. The PWM methods of three-level inverters were summarized and investigated. A 7 kVA drive with PWM rectifier was developed and put into operation. The flux oriented control is used on motor side inverter while the network side converter controls the dc side voltage and ensures the network nearly sinusoidal current and the reactive power zero value as well. Similar ancient CEGELEC product equipment was also put into operation. This drive has microprocessor system and can be PC controlled. The simulation programs and the test equipments were used for the investigation and the test measurements in the ordinary student laboratory practice, at the preparation for Master and Doctor degrees, and for other scientific efforts as well. The results are presented in more diploma works and test reports as well as in 15 papers. The instruction for student laboratory practice was prepared. The PWM methods of network rectifiers with current source supply were summarizes and investigated. The results are given in two papers.