Patent ID: 9007013
Filing Date: 2015-04-14
Classification: B60L,H02P,Y02T

Abstract:
1. An inverter control method for an eco-friendly vehicle which generates a pulse width modulation (PWM) signal according to a switching frequency and a sampling frequency and controls ON/OFF driving of a switching element, wherein a controller changes and sets the switching frequency according to a current motor speed, changes and sets a sampling frequency according to the switching frequency, and controls on/off driving of a switching element according to the switching frequency corresponding to the current motor speed and the sampling frequency wherein the switching frequency is compared with a predetermined reference frequency, such that when the switching frequency is lower than the predetermined reference frequency, double-sampling control is performed in which a frequency which is two times the switching frequency that is set according to the current motor speed is used as the sampling frequency, and when the switching frequency exceeds the predetermined reference frequency, single-sampling control is performed in which a frequency which is equal to the switching frequency is used as the sampling frequency.