It is often required that a three-phased asynchronous motor can run at variable speed, which makes it necessary to use a three-phase inverter driven from a DC-source. Today, most inverters are driven from the network using a simple diode bridge and an electrolytic capacitor. The problem with the simple diode bridge and the electrolytic capacitor is that current is only drawn for short periods, which gives rise to harmonic currents in the network. For small drive systems (motor+inverter), i.e. less than 1.5 kW, a single phase network outlet is often used. The author describes a method whereby the problem with harmonic currents, when using a single phase network connection, can be solved.
|Title of host publication||Conference Proceedings of the IEEE International Symposium on Industrial Electronics|
|Publication status||Published - 1993|
|Event||1993 IEEE International Symposium on Industrial Electronics - Budapest, Hungary|
Duration: 1 Jun 1993 → 3 Jun 1993
|Conference||1993 IEEE International Symposium on Industrial Electronics|
|Period||01/06/1993 → 03/06/1993|