Load optimization method for segmented-type LED drive system
A technology for LED drive and load optimization, which is applied to lighting devices, light sources, electrical components, etc., can solve the problems of reducing the number of traversals, not being able to take into account the optimization speed and optimization effect, and achieve the effect of high efficiency
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Embodiment 1
[0077] refer to Figure 3 to Figure 5 , Steps 1 to 4 of Embodiment 1 are further refined.
[0078] The processing procedure of said step 1 is:
[0079] (1.1) Determine N, X and Vn-x according to the requirements of Vac_min, Vac_max, circuit cost and size and the set ΔV;
[0080] (1.2) in to The average distribution method is used to determine Vn-x+1 to Vn within the range;
[0081] (1.3) According to VLED, calculate M and Mn-x+1 to Mn.
[0082] The processing procedure of described step 2 is:
[0083] (2.1) According to f(vac) and A(ac), under the condition of Vac=Vac_certain, the method of scanning m is used to determine the upper limit m_max of m that meets the requirements of PF, THDi and input current harmonic standards;
[0084] (2.2) According to the set phase coefficient redundancy Δm, take m=m_max-Δm, and calculate V1 and M1;
[0085] (2.3) Investigate whether V1 in the range from Vac_min to Vac_max can make the input current iac meet the requirements of PF, T...
Embodiment 2
[0096] refer to image 3 , Figure 4 to Figure 9 , Steps 1 to 4 of Embodiment 1 are further refined.
[0097] The processing procedure of described step 2 is:
[0098] (2.1) According to f(vac) and A(ac), within the range of Vac_min to Vac_max, the method of scanning m is used to determine the upper limit m_max of m that meets the requirements of PF, THDi and input current harmonic standards;
[0099] (2.2) According to the set phase coefficient redundancy Δm, take m=m_max-Δm, and calculate V1 and M1.
[0100] Except for step 2, other steps of this embodiment are the same as those of embodiment 1, and the optimization effect is also similar to that of embodiment 1.
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