Title :
A novel compensation method of dead time based on DSP
Author_Institution :
Dept. of Mech. & Electr. Eng., Guidaojiaotong Polytech. Inst., Shenyang, China
Abstract :
Traditional control method of SVPWM with dead time reduces the output voltage and distorts the waveform of phase current. This paper presents a novel method to compensate the dead time effects by combine the 180 °conduction type and 120°conduction type. In this method an arbitrary space voltage vector is synthesized with the twelve basic voltage vectors. As a result, the effects of dead time and the short of pipes are avoided or weakened so that the speed performance of PMSM is improved significantly. The novel control algorithm without dead time reduces the waveform distortion and harmonic content of output voltage and it improves the utilization of the DC bus voltage. Theoretical analysis and the experimental results demonstrate the effectiveness of the proposed control method.
Keywords :
compensation; digital signal processing chips; machine control; permanent magnet machines; pulse width modulation; synchronous machines; vectors; waveform analysis; DSP; PMSM; SVPWM; arbitrary space voltage vector; dead time; novel compensation method; output voltage; permanent magnet synchronous machines; phase current waveform; space vector pulse width modulation; traditional control method; Aerospace electronics; Distortion; Electron tubes; Inverters; Space vector pulse width modulation; Switches; Voltage control; 12 basic voltage vectors; PMSM; SVPWM; combine of two conduction type; dead time effects;
Conference_Titel :
Control and Decision Conference (CCDC), 2015 27th Chinese
Conference_Location :
Qingdao
Print_ISBN :
978-1-4799-7016-2
DOI :
10.1109/CCDC.2015.7162540
