| Abstract |
Static inverters, converting variable DC voltage into fixed single or three phase AC voltage are often used in UPS sets, on-board AC supplies for ships and aircraft, and high speed motor drives. Specification just by kVA rating and power factor not fully exploits the inverter's capabilities. Specific boundaries can be drawn in the kW-kVAr plane to show more exactly these capabilities under full or limited performance conditions. Such boundaries are imposed by thermal limits, the input DC voltage range, the allowed output harmonics, or commutation mechanisms. This paper qives some guidelines in calculation of kW-kVAr boundaries for single phase or three phase constant output voltage inverters. |
