scholarly journals Novel Dead-Time Compensation Strategy for Wide Current Range in a Three-Phase Inverter

Electronics ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 92 ◽  
Author(s):  
Jeong-Woo Lim ◽  
Hanyoung Bu ◽  
Younghoon Cho
Keyword(s):  
Dead Time ◽  
Compensation Voltage ◽  
Voltage Source ◽  
Current Phase ◽  
Phase Voltage ◽  
Compensation Strategy ◽  
High Modulation ◽  
Voltage Controller ◽  
Three Phase ◽  
Dead Time Compensation

This paper proposes a novel three-phase voltage source inverter dead-time compensation strategy for accurate compensation in wide current regions of the inverter. In particular, an analysis of the output voltage distortion of the inverter, which appears as parasitic components of the switches, was conducted for proper voltage compensation in the low current region, and an on-line compensation voltage controller was proposed. Additionally, a new trapezoidal compensation voltage implementation method using the current phase was proposed to simplify realizing the trapezoidal shape of the three-phase compensation voltages. Finally, when the proposed dead-time compensation strategy was applied, the maximum phase voltage magnitude in the linear modulation voltage regions was defined to achieve smooth operation even at high modulation index. Simulations and experiments were conducted to verify the performance of the proposed dead-time compensation scheme.

scholarly journals Novel Dead-Time Compensation Strategy for Wide Current Range in a Three-Phase Inverter

2018 ◽  
Author(s):  
Jeong-Woo Lim ◽  
Hanyoung Bu ◽  
Younghoon Cho
Keyword(s):  
Dead Time ◽  
Compensation Voltage ◽  
Voltage Source ◽  
Current Phase ◽  
Phase Voltage ◽  
Compensation Strategy ◽  
High Modulation ◽  
Voltage Controller ◽  
Three Phase ◽  
Dead Time Compensation

This paper proposes a novel three-phase voltage source inverter dead-time compensation strategy for accurate compensation in wide current regions of the inverter. In particular, an analysis of the output voltage distortion of the inverter, which appears as parasitic components of the switches, has been conducted for proper voltage compensation in the low current region, and an on-line compensation voltage controller has been proposed. Also, a new trapezoidal compensation voltage implementation method using the current phase is proposed to simplify realizing the trapezoidal shape of the three-phase compensation voltages. Finally, when the proposed dead-time compensation strategy is applied, the maximum phase voltage magnitude in the linear modulation voltage regions is defined to achieve smooth operation even at high modulation index. Simulations and experiments were conducted to verify the performance of the proposed dead-time compensation scheme.

Study and Simulation of Dead-Time Compensation for the Voltage Source SVPWM Inverter

2013 ◽  
Vol 300-301 ◽  
pp. 1200-1204
Author(s):  
Shao Chang Chen ◽  
Hui Ying He ◽  
Chao Li ◽  
Chuan Hui Wang
Keyword(s):  
Dead Time ◽  
Time Effect ◽  
Voltage Source ◽  
System Control ◽  
Current Clamp ◽  
Compensation Strategy ◽  
Phase Current ◽  
Zero Current ◽  
The Dead ◽  
Dead Time Compensation

The dead-time effect of the SVPWM inverter was analyzed as well as its effect on the control system performance (distortion of phase voltage and zero-current clamp phenomenon of phase current, etc).Then, basing on the analysis about the generation of the dead-time effect, the error voltage vector compensation strategy was raised. In order to verify the correctness and reasonableness of the compensation strategy, simulation system was constructed in use of Matlab/Simulink software to implement analysis and research. Simulation results show that the zero-current clamp phenomenon of phase current was basically eliminated after using the dead-time compensation. Then spectrum analysis was made for the phase current waveform, which showed that the compensation strategy weakened the fifth and seventh harmonic waveform brought by the dead for the inverter, significantly improved sinusoidal and system control performance of the phase current, and proved the theoretical correctness and experimental feasibility.

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