Patent ID: 7528569
Filing Date: 2009-05-05
Classification: B62D,H02M

Abstract:
1. An inverter circuit comprising: an inverter, including a plurality of pairs of a high-side switching element and a low-side switching element that are connected in series with each other to form a pair of input terminals connected with positive and negative terminals of a dc power source, for providing ac output power at a plurality of output terminals; a command signal processing section for providing a command signal to set a prescribed amount of the ac output power; a pulse generating section for generating pulse signals for controlling said inverter according to the command signal to turn on or off with timing that includes a dead time to prevent short circuiting the dc power source, whereby said inverter has a dead zone of operation; and a command signal compensation section for modifying the command signal according to changes in the dc power source voltage level to thereby control a level of the dead zone to a preset level corresponding to that which would be expected for a predetermined constant dc power source voltage level.