Minimum DC ripple modulation method for current source converter
A DC ripple and current source technology, applied in the field of modulation, can solve the problems of system dynamic performance reduction, system switching loss increase, increase of DC inductance, etc., to achieve optimal performance, increase switching loss, and prolong system life. Effect
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[0051] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0052] Such as Figure 4 As shown, the minimum DC ripple modulation method of the current source converter of the present invention includes the following steps:
[0053] Step 1: Calculate various parameters of the system, including the AC voltage amplitude V of the converter tm, the initial phase γ of the AC phase A voltage of the converter, the modulation ratio m, and the initial value of the reference current angular displacement θ 0 .
[0054] Step 2: Define ripple |△I| and carrier period T...
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