DocumentCode :
11680
Title :
Dead-Time Effect Compensation Based on Additional Phase Current Measurements
Author :
Lewicki, Arkadiusz
Author_Institution :
Dept. of Electr. & Control Eng., Gdansk Univ. of Technol., Gdansk, Poland
Volume :
62
Issue :
7
fYear :
2015
fDate :
Jul-15
Firstpage :
4078
Lastpage :
4085
Abstract :
This paper proposes a new method of dead-time effect compensation. The proposed solution is based on additional phase current measurements realized by analog-to-digital converters. These measurements are carried out at the time instants specified by a pulsewidth-modulation (PWM) strategy. This makes it possible to estimate inverter currents at the commutation instants and, finally, to estimate the voltage error caused by dead time. This voltage error is compensated during the next switching period by modification of a reference voltage. The proposed solution can be used to compensate the voltage error in multilevel multiphase voltage source inverters. The experimental research studies were carried out on three-phase two-level and three-level neutral-point-clamped inverters supplying 55- and 160-kW motors, respectively. The results of the experimental investigations are presented in this paper.
Keywords :
PWM invertors; PWM power convertors; analogue-digital conversion; electric current measurement; phase measurement; analog-to-digital converters; dead-time effect compensation; inverter currents; multilevel multiphase voltage source inverters; neutral-point-clamped inverters; phase current measurements; power 160 kW; power 55 kW; pulsewidth-modulation strategy; reference voltage; voltage error; Current measurement; Inverters; Phase measurement; Pulse measurements; Transistors; Vectors; Voltage measurement; Dead-time effect; digital control of voltage source inverter; digital control of voltage-source inverter (VSI); multilevel inverters; pulse width modulation; pulsewidth modulation (PWM);
fLanguage :
English
Journal_Title :
Industrial Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0278-0046
Type :
jour
DOI :
10.1109/TIE.2015.2389756
Filename :
7005536
Link To Document :
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