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    Measuring the small-signal response of diode rectifier loads using a DSP controlled switching converter system

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    Author
    Laird, H.
    Round, S.
    Duke, R.
    Date
    2002
    Permanent Link
    http://hdl.handle.net/10092/1692

    The assumption that non-linear rectifier loads contribute only to the steady state of a power system is commonly made in the design and analysis of power conditioners such as the shunt active filter. This tacitly assumes that the non-linear rectifier load is less sensitive than the AC system. This paper presents experimental measurements of the sensitivity of non-linear rectifiers made by injecting a perturbing current into the point of coupling of the rectifier. The perturbing current is generated with a DSP controlled switching power converter typically used in shunt active filters. The DSP system also measures the change in the load current. Results are presented for both single-phase and three-phase rectifiers. These show that both these rectifiers are sensitive to the perturbing current, that the response is measurable with relatively unsophisticated hardware and that the response has a well defined pattern in the frequencies that occur.

    Subjects
    rectifier
     
    small signal
     
    shunt-active filter
     
    power conditioning
     
    measurements
     
    Fields of Research::290000 Engineering and Technology::290900 Electrical and Electronic Engineering::290901 Electrical engineering
    Collections
    • Engineering: Conference Contributions [1920]
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