which reduces the complexity of coordinate transformation, vector selection and duty cycle calculation in αβγ coordinate, as well as facilitates the realization of digital control. By analyzing the average current model of the
Then, the basic principle and implementation method of SVPWM were elaborated in detail, including the synthesis of space vectors, calculation of duty cycle, and generation of modulation waveforms. Next, by establishing a simulation model, simulation analysis was conducted on the SVPWM vector control ...
is located.Afterwards,the seven-segment SVPWM modulation method is used to realize the SVPWM of a,b,and c three-phase voltages.By using the proposed algorithm,the determination of space vector sector and the calculation of duty cycle in SVPWM is simplified and the calculation time ...
(China University of Mining and Technology,Xuzhou 221008, hina) Abstract:There are always complicated sector identification and duty cycle calculations that would normally involve trigonometric function calculations or look-up tables in the conventional three-level SVPWM algorithms,thus taking up much ...
The complexity was reduced by avoiding the Clark coordinate transformations and trigonometric function calculation in the conventional SVPWM. The simulation of a three-phase asynchronous motor was built by using the novel SVPWM. The results verify the validity of the algorithm.徐传芳...
In order to simplify the calculation of the traditional three-level SVPWM,and improve the simulation efficiency for the practical system,by using the TI TMS320F28335 DSP to achieve three-level SVPWM algorithm as a reference,a three-level inverter SVPWM algorithm on a non-orthogonal coordinate syste...
As a result 499D is regarded as the PWM cycle value in the code programming and pulse width table calculation. For SPWM/THIPWM/SAPWM, all the modulated waveforms can be described with mathematic equations so pulse width tables can be directly pre-calculated for look-up. Here the 2π ...
This value will be used to calculate // phase advance only if PHASE_ADVANCE is defined // This is the calculation from the required phase advance to the actual // value to be multiplied by the speed of the motor. So, if PHASE_ADVANCE is // enabled, a certain amount of shit angle ...
The whole process from reference voltage input to three-phase PWM output had been completed in two clock cycles with only three triggers in FPGA, which effectively improved the calculation speed. In addition, the resource usage of the hardware architecture with different ...
Compared with the prior art, the direct current bus voltage Ud and the actual switching time Ts are not needed, calculation is easy and convenient and response is fast in the electrode control process, the detecting error of the direct current bus voltage Ud and the actual switching time Ts ...