| Nowadays, along with the development of power electronics technology, three-phase converters system have been used in various occations. For the three-phase boost voltage source converter, most control methods cannot embrace high power factor, low switching loss and easy implementation. In this thesis, to solving the problems and shortcomings of the current control methods of three-phase converters, an improving space vector current control methods has been proposed. This method can achieve high power factor, low switching loss and easy implementation.Based on a lot of literatures consulted in this thesis, the comprehensive overview of three-phase boost voltage source converters and its control methods, and the brief analysis of hysteresis current cuntrol and space vector current control have been expressed at first. Then, by analyzing the simplified space vector current control, indicate that this method is the most practical strategy. But the imperfect aspect still exist: for dynamic-state, when the error current is larger, there still has margin of current tracking performence to improving; for stable stage, dur to the impact of the control delay, the voltage and current of AC side appear phase shifting. Thus, this improving method is proposed. When the current error is larger, the control strategy will be replaced, so that improving the dynamic performance; increase the predictive link before generate the reference current to compensate the error caused by the control delay, so that improving the steady-state performance. More over, this thesis illustrate the characters and advantages of this method theoretically.To verify the above theory from practical area, the prototype equipment has been constructed, hardware and software have been designed, the processor use DSP, the switching devices use IGBT. Finally, the large number of experiment results fully verified the improving method is superior to conventional methods and consistent with the stated theory.
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