Uniform PWM modulation method and system on the basis of natural commutation
A technology of natural commutation and modulation method, which is applied in the field of unified PWM modulation method and system based on natural commutation, can solve the problems of lack of engineering implementation method, etc. Effect
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[0017] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.
[0018] See figure 1 It is a flowchart of a unified PWM modulation method based on natural commutation.
[0019] Step S10: Calculate the per-unit value of the three-phase modulation wave. According to the inverter voltage loop or voltage and current double loop control output three-phase modulation wave ( , , ):
[0020] =
[0021] = (1)
[0022] =
[0023] among them, Is the peak value of the output line voltage.
[0024] Step S11: Calculate the real-time maximum value and real-time minimum value of the three-phase modulation wave voltage according to the per ...
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