| Abstract |
Inverter fed AC drives up to 1 kW could not gain market shares outside industrial applications. The reason is the cost disadvantage compared to conventional collector motor drives. The only way to get an approach to lower cost, better performance and higher reliability is to reduce the expense by the means of microelectronics. It will be shown, that it is possible to decrease the part count of an inverter near one magnitude by integration of drive electronics for the power transistors and on the control side by the integration of all control needed for an inverter in a single chip. During this approach a phenomenon relied to the destruction mechanism of MOS- transistors was found, which will be described first. |
