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A DEAD-TIME CONTROL METHOD FOR POWER ELECTRONICS CONVERTERS AND A CIRCUIT FOR THE APPLICATION OF THIS METHOD
A DEAD-TIME CONTROL METHOD FOR POWER ELECTRONICS CONVERTERS AND A CIRCUIT FOR THE APPLICATION OF THIS METHOD
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机译：电力电子变换器的时滞控制方法及该方法的电路
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摘要
This invention relates to a dead time control method (100) comprising the steps of: converting the DC link voltage, output current and output voltage to digital values with an ADC (Analog to Digital converter) (102); calculating the hysteresis band for adaptive hysteresis current control using the values read by the ADC and updating the band value via recalculating it at each sampling time (103); calculating the IrefH and IrefL values using the hysteresis band and Iref (l03a); generating the PWM signal by hysteresis current control (104), generating two auxiliary control signals as VP, VN (105); in the region where VP = 1 and VN = 0, applying of the drive signal of Ti without setting dead time wherein Ti is the conduction duration of an upper switch, and not applying the drive signal of T2 wherein T2 is the turn off duration of said upper switch and is the conduction duration of a lower switch (106); Applying the driving signal of T2 without setting dead time in the region where VP = 0 and VN = 1, and not applying the driving signal of Ti (107); applying the driving signals of Ti and T2 via setting dead time in the region where VP = 1 and VN = 1, (108); and relates to also circuits (2, 2', 2") on which this method (100) is applied for hysteresis current control in power electronics converters.
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