ᑕᑯᒃᓴᐅᙱᑦᑐᑦ ᐊᒃᓱᕈᕐᓇᖅᑐᑦ ᒫᓐᓇᓕᓴᕐᓄᑦ ᐆᒻᒪᖅᑯᑎᓄᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᓄᑦ
ᓄᓇᕐᔪᐊᒥ ᐱᔪᒥᓇᖅᑐᒥᒃ, ᐆᒻᒪᖅᑯᑎ ᐃᖏᕐᕋᔪᖅ ᐆᒻᒪᖅᑯᑎᖃᕐᕕᑦᑎᒍᑦ ᐱᐅᔪᒻᒪᕆᐊᓗᒃ, ᓴᓗᒪᔪᖅ ᓯᓅᑉ ᐃᖏᕐᕋᓂᖓ−ᐃᖏᕐᕋᑦᑎᐊᖅᑐᖅ, ᓇᓗᓇᙱᖦᖢᓂ ᐊᓯᔾᔨᖅᑕᕐᓂᖓ ᓴᙱᓂᖓᑕ ᐊᒻᒪ ᐃᖏᕐᕋᓂᖓ. ᑭᓯᐊᓂ, ᒫᓐᓇᓕᓴᐃᑦ ᐅᐊᔭᒨᖅᑐᑦ ᐊᑐᖅᑕᐅᔪᑦ, ᐅᐊᔭᒨᖅᑐᑦ ᐊᑐᖅᑕᐅᓲᑦ, ᑕᒪᑐᒥᙵ ᐱᔪᒥᓇᙱᑦᑎᐊᖅᐳᖅ. ᑲᑉᐳᑎᑐᐊᕌᖓᕕᑦ ᐱᖁᑎᒥᒃ ᐊᓯᔾᔨᖅᑕᖅᑐᒥᒃ ᐆᒻᒪᖅᑯᑎᖃᖅᑐᒥᒃ−ᖃᕆᑕᐅᔭᕐᓄᑦ ᓴᙱᒃᑎᒋᐊᕈᑎᒥᒃ LED−ᒧᑦ ᖃᐅᒻᒪᖅᑯᑎᒧᑦ−ᓇᓗᓇᙱᖦᖢᓂ ᑭᓯᐊᓂ ᐆᒃᑐᕋᖅᑕᐅᔪᓐᓇᖅᖢᓂ ᐊᓯᔾᔨᖅᓯᕙᒃᐳᖅ ᑖᔅᓱᒥᖓ ᐱᐅᔪᒻᒪᕆᖕᒥᒃ ᐆᒻᒪᕆᖕᓂᕆᔭᐅᔪᒥᒃ. ᑖᓐᓇ ᐊᓯᔾᔨᖅᓯᓂᖅ ᓇᓗᓇᐃᖅᑕᐅᕙᒃᐳᖅ ᐱᕐᔪᐊᖑᓪᓗᓂ ᑭᒡᓕᒋᔭᐅᔪᒧᑦ ᖃᐅᔨᒪᔭᐅᓪᓗᓂ ᑲᑎᖦᖢᒋᑦ harmonic distortion, ᐅᕝᕙᓘᓐᓃᑦ THD. ᑕᒪᓐᓇ ᐱᔭᕆᐊᑐᔪᐊᓘᖅᑰᔨᒐᓗᐊᖅᑎᓪᓗᒍ ᐅᐊᔭᓕᕆᔨᓄᑦ, ᑐᑭᓯᐅᒪᓂᖅ ᑐᙵᕕᖏᓐᓂᒃ THD ᐱᒻᒪᕆᐅᕗᖅ ᑭᓇᑐᐃᓐᓇᕐᒧᑦ ᐃᓚᐅᖃᑕᐅᔪᓄᑦ ᓇᓗᓇᐃᖅᓯᓂᕐᒧᑦ, ᐃᓕᐅᖅᑲᐃᓂᕐᒧᑦ, ᐅᕝᕙᓘᓐᓃᑦ ᐊᐅᓚᑦᑎᓂᕐᒥᒃ ᐊᖏᔪᓂᒃ ᖃᐅᒻᒪᖅᑯᑎᓂᒃ. ᖁᕝᕙᓯᒃᑐᒥ ᓂᐱᓕᐅᕆᓂᕐᒧᑦ ᐊᓯᔾᔨᖅᓯᓂᐅᔪᒥ ᑐᕌᖅᑎᑦᑎᔪᓐᓇᖅᐳᖅ ᐆᓇᖅᓯᓗᐊᖅᑐᒥ ᓄᑭᓪᓚᐅᑎᓄᑦ, ᖃᒥᑦᑕᐅᑎᓄᑦ, ᐱᖁᑎᓂ ᐊᔪᓕᖅᑎᑦᑎᓂᐅᔪᒥ, ᐊᒻᒪ ᐅᔾᔨᕐᓇᖅᑐᒥ ᐆᒻᒪᖅᑯᑎᒥ ᐊᑐᕐᓂᖃᑦᑎᐊᙱᓐᓂᐅᔪᒥᑦ. ᓇᖕᒥᓂᕆᔭᐅᔪᓄᑦ ᕼᐋᒻᓚᒋᔭᐅᔪᓄᓪᓗ ᑮᓇᐅᔭᓕᐅᕋᓱᒃᐸᒃᑐᓄᑦ LED−ᓂᒃ ᖃᐅᒻᒪᖅᑯᑎᓂᒃ ᐆᒻᒪᖅᑯᑎᑐᓗᐊᙱᓐᓂᖅᓴᐅᔪᓐᓇᕐᓂᖏᓐᓄᑦ, ᓱᖁᑎᒋᙱᓪᓗᒍ THD ᓱᕋᐃᔪᓐᓇᖅᐳᖅ ᑮᓇᐅᔭᓂᒃ ᐊᑐᙱᓐᓂᖅᓴᐅᔪᒪᓇᔭᖅᑕᖏᓐᓂᒃ. ᑖᓐᓇ ᒪᓕᒃᑕᐅᔪᒃᓴᖅ ᑐᑭᓯᓇᖅᓯᑎᑦᑎᓂᐊᖅᐳᖅ THD−ᒥᒃ, ᑐᑭᓯᓇᖅᓯᑎᑦᑎᓗᓂ ᑭᓲᖕᒪᖔᑦ, ᖃᓄᖅ ᐆᒃᑐᕋᖅᑕᐅᕙᖕᒪᖔᑦ, ᖃᓄᐃᒻᒪᑦ ᐊᐅᓚᑕᐅᕙᖕᒪᖔᑦ LED−ᓄᑦ ᐊᐅᓚᐅᑎᓄᑦ, ᖃᓄᐃᒻᒪᓪᓗ ᐊᑦᑎᒃᑐᒦᑎᑉᐸᒡᓗᒍ ᐋᔩᖃᑎᒌᒍᑕᐅᔪᓐᓇᙱᒻᒪᖔᑦ ᐊᑦᑕᕐᓇᙱᑦᑐᒥᒃ ᑲᔪᓯᓂᖃᑦᑎᐊᖅᑐᒥᒡᓗ ᐅᐊᔭᒨᖅᑐᓂᒃ ᐃᓕᐅᖅᑲᐃᓂᐊᕐᓗᓂ.
ᑭᓲᕙ ᑲᑎᖦᖢᒋᑦ harmonic distortion (THD)? ᐊᔪᕐᓇᙱᑦᑐᑯᓗᒃ ᑐᑭᖓ
ᑲᑎᖦᖢᒋᑦ harmonic distortion (THD) ᐆᒃᑐᕋᐅᑎᐅᕗᖅ ᓇᓗᓇᐃᖅᓯᓪᓗᓂ ᖃᓄᑎᒋᐅᓂᖓ ᐊᓯᔾᔨᖅᓯᒪᓂᖓᑕ ᐱᑕᖃᖅᑐᖅ ᓇᓗᓇᐃᒃᑯᑕᕐᒥ, ᐱᓗᐊᙳᐊᖅᑐᒥ ᐃᓗᓕᖏᓐᓂ ᐆᒻᒪᖅᑯᑎᓄᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᓄᑦ, ᐊᓯᔾᔨᖅᓯᓂᖅ ᒫᓐᓇ ᓴᙱᓂᖓᑕ ᓴᙱᓂᖓᑕ ᐋᖅᑭᒃᓯᒪᓂᖓᓂᒃ ᐱᔪᒥᓇᖅᑐᒥᒃ, ᓴᓗᒪᑦᑎᐊᖅᑐᒥᒃ sine wave-ᒥᒃ ᐋᖅᑭᒃᓯᒪᓂᖓᓂᒃ. ᑕᒪᓐᓇ ᑐᑭᓯᓂᐊᕐᓗᒍ, ᓯᕗᓪᓕᕐᒥ ᑐᑭᓯᔭᕆᐊᖃᖅᐳᒍᑦ ᑐᑭᖓᓂᒃ harmonics-ᓂᒃ. ᐱᓪᓗᐊᑕᐅᔪᖅ ᐆᒻᒪᖅᑯᒻᒧᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᖅ ᑐᙵᕕᒋᔭᐅᓪᓗᓂ ᐊᐅᓚᓂᕐᒧᑦ ᐊᑐᖅᑕᐅᒐᔪᖕᓂᖓ − 50 Hz−ᓂᒃ ᐊᒥᓱᓂ ᓄᓇᕐᔪᐊᒥ (ᐃᓚᒋᔭᐅᓪᓗᑎᒃ ᑕᕆᐅᑉ ᐊᑭᐊᓂ, ᐊᐃᓴᒥ, ᐊᒻᒪᓗ ᐋᔅᑐᕇᓕᐊᒥ) ᐅᕝᕙᓘᓐᓃᑦ 60 Hz−ᓂᒃ ᐅᐊᖕᓇᖓᓂ ᐊᒥᐊᓕᑲᒥ. ᑲᑎᙵᓂᐅᔪᑦ ᓴᙱᓂᐅᔪᑦ ᐅᕝᕙᓘᓐᓃᑦ ᐃᖏᕐᕋᓂᐅᔪᑦ ᓴᙱᓂᖏᓐᓂ ᓈᓴᐅᑎᐅᔪᓂ ᐊᒥᓱᐃᖅᑕᖅᑐᓂ ᑖᔅᓱᒪ ᐱᓪᓗᐊᑕᐅᔪᒥ ᐊᑐᖅᑕᐅᒐᔪᒃᑐᒥ. 50 Hz-ᒧᑦ, ᐱᖓᔪᖓᑦ 150 Hz-ᖑᕗᖅ, ᑕᓪᓕᒪᖓᑦ 250 Hz-ᖑᓪᓗᓂ, 7-ᒋᔭᖓ 350 Hz-ᖑᓪᓗᓂ, ᐊᓯᖏᓪᓗ. THD ᑲᑎᖦᖢᒋᑦ ᓴᙱᓂᖓᑕ (ᐅᕝᕙᓘᓐᓃᑦ ᐊᖏᓂᖓ) ᑕᒪᐃᓐᓄᓕᒫᖅ ᑲᑎᙵᓂᐅᔪᓄᑦ ᐃᓗᓕᖏᓐᓄᑦ, ᑕᐅᑐᒃᖢᒍ ᓴᙱᓂᖓᑕ ᐱᓪᓗᐊᑕᐅᑉ ᐱᒐᔪᖕᓂᖓᑕ. ᐆᒃᑐᕋᐅᑎᐅᓪᓗᐊᑕᖅᐳᖅ ᖃᓄᑎᒋ "ᓂᐱᖅᑯᖅᑐᓂᖓ" ᐅᕝᕙᓘᓐᓃᑦ ᐱᔭᐅᔪᒪᙱᑦᑐᒥᒃ ᐆᒻᒪᖁᑎᒥᒃ ᐃᓚᔭᐅᔪᖃᖅᓯᒪᖕᒪᖔᑦ ᓴᓗᒪᔪᒧᑦ ᓇᓗᓇᐃᒃᑯᑕᕐᒧᑦ. ᐅᖃᐅᓯᐅᒐᔪᒃᐳᖅ ᓇᓕᐊᖕᓂᑐᐃᓐᓇᖅ ᐊᔾᔨᒌᙱᓐᓂᖏᑦ 0 ᐊᒻᒪ 1 ᐊᑯᓐᓂᖓᓂ ᐅᕝᕙᓘᓐᓃᑦ ᐳᓴᓐᑎᑎᒍᑦ 0%-ᒥᑦ 100%-ᒧᑦ. THD 0% (ᐅᕝᕙᓘᓐᓃᑦ 0) ᑭᒡᒐᖅᑐᐃᕗᖅ ᐱᐅᔪᒻᒪᕆᖕᒥᒃ, ᐊᓯᔾᔨᖅᓯᒪᙱᑦᑐᒥᒃ sinus wave-ᒥᒃ. THD 100% (ᐅᕝᕙᓘᓐᓃᑦ 1) ᑐᑭᖃᕋᔭᖅᐳᖅ ᑲᑎᖦᖢᒋᑦ ᓴᙱᓂᕆᔭᐅᔪᑦ harmonics-ᒥ ᓇᓕᒧᒃᓱᖅᐳᑦ ᓴᙱᓂᕆᔭᐅᔪᒧᑦ ᑐᙵᕕᒋᔭᐅᔪᒧᑦ, ᓇᓗᓇᐃᖅᓯᓪᓗᓂ ᐊᖏᔪᒻᒪᕆᖕᒥᒃ ᐊᓯᔾᔨᖅᓯᒪᕐᔪᐊᖅᑐᒥᒃ ᐃᖏᕐᕋᓂᖓᑕ ᐋᖅᑭᒃᓯᒪᓂᖓᓂᒃ. ᐊᑐᕐᓂᖃᑦᑎᐊᖅᑐᒃᑯᑦ, ᐊᑦᑎᖕᓂᖅᓴᐅᒍᓂ THD ᐊᑭᖓ, ᓴᓗᒪᓂᖅᓴᐅᓇᔭᖅᐳᖅ ᐊᑐᑦᑎᐊᕐᓂᖅᓴᐅᓗᓂᓗ ᐆᒻᒪᖅᑯᑎ.
ᖃᓄᖅ THD ᓈᓴᖅᑕᐅᓲᖑᕙ ᑐᑭᓕᐅᖅᑕᐅᕙᒃᖢᓂᓗ?
ᓈᓴᐅᓯᕆᓂᖅ THD-ᒥᒃ ᐃᓚᖃᖅᐳᖅ ᐱᑐᐃᓐᓇᐅᙱᑦᑐᒥᒃ ᓇᓗᓇᐃᒃᑯᑕᕐᒥᒃ ᖃᐅᔨᓴᖅᓯᓂᕐᒥᒃ, ᑭᓯᐊᓂ ᑐᙵᕕᒋᔭᖓ ᓇᓗᓇᙱᑦᑎᐊᖅᐳᖅ. ᐆᒻᒪᖅᑯᑎᐅᑉ ᐱᐅᓂᖓᓂᒃ ᖃᐅᔨᓴᕈᑎ ᐆᒃᑐᕋᐃᕙᒃᐳᖅ ᐅᐊᔭᒨᖅᑐᓂᒃ ᓇᓗᓇᐃᒃᑯᑕᓂᒃ ᐱᓕᕆᕙᒃᖢᓂᓗ ᓈᓴᐅᓯᕆᓂᕐᒥᒃ ᑕᐃᔭᐅᔪᒥᒃ ᓱᒃᑲᔪᒥᒃ Fourier Transform (FFT). ᑕᒪᓐᓇ ᐊᕕᑦᑐᐃᔪᖅ ᐱᔭᕆᐊᑐᔪᒥᒃ, ᐋᖅᑭᑦᓯᒪᑦᓯᐊᖏᑦᑐᒥᒃ ᐃᖏᕐᕋᓂᖓᑕ ᐋᖅᑭᑦᓯᒪᓂᖓᓂᒃ ᐃᒻᒥᒃᑰᓕᖓᑦᓱᑎᒃ ᐱᒍᓐᓇᐅᑎᖏᑕ ᐃᓗᓕᖏᑦ. ᓇᓗᓇᐃᖅᓯᔪᖅ ᐊᖏᓂᖓᓂᒃ ᐱᓪᓗᐊᑕᐅᑉ ᐱᒐᔪᖕᓂᖓ (ᓲᕐᓗ, 50 Hz) ᐊᖏᓂᖏᓪᓗ ᑕᒪᕐᒥᒃ ᑲᑎᙵᓂᖏᑕ (ᓲᕐᓗ, 100 Hz, 150 Hz, 200 Hz, ᐊᓯᖏᓪᓗ). THD ᓈᓴᐅᓯᕆᔭᐅᓕᖅᐸᒃᐳᖅ ᐱᓪᓗᓂ ᑭᑉᐹᕆᒃᑐᖅ ᑐᙵᕕᖓᓂᒃ ᑲᑎᖦᖢᒋᑦ ᑭᑉᐹᕆᒃᑐᑦ ᐊᖏᓂᓕᒫᖏᑦ, ᐊᒡᒍᖅᑕᐅᓪᓗᓂ ᐊᖏᓂᖓᓄᑦ ᑐᙵᕕᐅᑉ. ᖃᐅᔨᔭᐅᔪᖅ ᐊᒥᓱᕈᖅᑎᑕᐅᓪᓗᓂ 100-ᒧᑦ ᐳᓴᓐᑎᒥᒃ ᐱᓂᐊᕐᓗᓂ. ᑐᑭᓕᐅᕐᓗᒍ ᑖᓐᓇ ᐊᑭᖓ ᐱᓪᓗᐊᑕᐅᕗᖅ ᖃᐅᔨᓴᕐᓂᐊᕐᓗᓂ ᐆᒻᒪᖅᑯᑎᐅᑉ ᐱᐅᓂᖓᓂᒃ. THD ᓈᓴᐅᑎᖓ ᖃᓂᒋᔭᖓᓂ 0% ᑐᑭᖃᖅᐳᖅ ᐊᓂᕙᓪᓕᐊᔫᑉ ᒫᓐᓇ ᓴᙱᓂᖓᓘᓐᓃᑦ ᓴᓗᒪᑦᑎᐊᖅᑐᖅ sine wave, ᓴᙱᓂᖓᑕ ᐃᓗᓕᖏᑦ ᐊᔾᔨᑲᓴᑦᑎᐊᖏᑦ ᐃᓯᖅᐸᓪᓕᐊᔪᒧᑦ. ᑕᒪᓐᓇ ᐱᔪᒥᓇᑦᑎᐊᖅᐳᖅ. ᖃᔅᓯᐅᓂᕆᔭᖓ ᑎᑭᐅᑎᒃᐸᑦ 100%−ᒧᑦ ᑐᑭᖃᖅᐳᖅ ᐊᖏᔪᑲᓪᓚᖕᒥᒃ ᓂᐱᓕᐅᕆᓂᕐᒧᑦ ᐊᓯᔾᔨᖅᓯᓯᒪᔪᖃᕐᓂᖓᓂᒃ; ᓇᓗᓇᐃᒃᑯᑕᖅ ᓱᕈᖅᓯᒪᓂᖃᖅᐳᖅ ᖁᑦᑎᒃᑐᒥ ᐊᓯᖏᓐᓂ ᓂᐱᒋᔭᐅᕙᒃᑐᓂ. ᐆᒃᑑᑎᒋᓗᒍ, THD 15% ᑐᑭᖃᖅᐳᖅ ᑲᑎᖦᖢᒋᑦ ᐆᒻᒪᖅᑯᑎᑦ ᐃᓗᐊᓃᑦᑐᑦ ᑲᑎᙵᓂᓕᒫᖏᓐᓂ ᑲᑎᖦᖢᒋᑦ 15% ᐆᒻᒪᖅᑯᑎᐅᑉ ᐃᓗᐊᓃᑦᑐᖅ ᑐᙵᕕᖓᓂ. ᑕᒪᓐᓇ ᓇᓃᓐᓂᕆᔭᖓ ᐊᓯᔾᔨᖅᓯᓯᒪᓂᕆᔭᐅᔪᖅ ᐋᖅᑭᒃᑕᐅᒐᔪᒃᐸᒃᐳᖅ ᐊᖏᓛᖑᔪᓐᓇᖅᖢᓂ ᑭᒡᓕᒋᔭᐅᑎᑕᐅᓪᓗᓂ ᐃᓛᒃᑰᖅᑐᓄᑦ ᐱᖁᑎᓄᑦ, ᑕᒪᒃᑯᐊ ᖁᑦᑎᖕᓂᖅᓴᐃᑦ ᓴᖅᑭᑎᑦᑎᓕᕈᓐᓇᕐᓂᖏᓐᓄᑦ ᐊᑲᐅᙱᓕᐅᕈᑎᒋᔭᐅᔪᓂᒃ ᐊᖏᓂᖅᓴᒧᑦ ᐆᒻᒪᖅᑯᒻᒧᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᓄᑦ.
ᖃᓄᐃᒻᒪᑦ LED ᐊᖁᑎᑦ ᓴᖅᑭᑎᑦᑎᓲᖑᕙᑦ harmonic distortion-ᒥᒃ?
ᐱᓪᓗᐊᑕᐅᔪᖅ ᓂᐱᓕᐅᕆᓂᕐᒧᑦ ᐊᓯᔾᔨᖅᓯᓂᐅᔪᒥ ᐅᓪᓗᒥᐅᓕᖅᑐᖅ ᖃᐅᒻᒪᖅᑯᑎᓄᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᓂ LED−ᒧᑦ ᐊᖁᑎᐅᕗᖅ. LED ᐊᖁᑎ ᐅᐊᔭᒨᖅᑐᖅ ᐆᒻᒪᖅᑯᑎ ᐊᓯᔾᔨᖅᓯᔪᖅ ᐃᓯᖅᐸᓪᓕᐊᔪᒥᒃ AC (ᐊᓯᐊᒎᖔᖅᑐᖅ courant) ᐆᒻᒪᖅᑯᑎᖃᕐᕕᒃ ᐊᑦᑎᒃᑐᒧᑦ ᓴᙱᓂᓕᖕᒧᑦ DC (ᑕᐃᑯᙵᑲᐅᑎᒋ ᐃᖏᕐᕋᔪᖅ) ᐆᒻᒪᖅᑯᑎ ᐱᔭᕆᐊᖃᖅᑐᖅ LED modules. ᐅᓄᕐᓂᖅᓴᐃᑦ ᑖᒃᑯᐊ ᐊᖁᑎᑦ ᑐᑭᓕᐊᕐᓂᖃᙱᑦᑐᑦ ᐅᖁᒪᐃᓐᓂᖏᑦ. ᐊᔾᔨᒋᙱᖦᖢᓂᐅᒃ ᓇᑲᓲᔭᑐᐃᓐᓇᖅ, ᑐᑭᓕᐊᖅᑐᒃᑯᑦ ᓴᙱᓂᖃᖅᖢᓂ ᐃᖏᕐᕋᓂᖃᑦᑎᐊᖅᖢᓂ, ᐆᒻᒪᖅᑯᑎᑐᓗᐊᙱᑦᑐᒥᒃ ᐃᖏᕐᕋᓂᖃᖅᖢᓂ, ᐆᒻᒪᖅᑯᑎᑐᓗᐊᙱᑦᑐᒥᒃ ᐃᖏᕐᕋᓂᖃᐃᓐᓇᖅᐸᙱᖦᖢᓂ. ᐃᓗᐊᒍᑦ, ᓯᕗᓪᓕᖅ ᐊᑐᖅᑕᐅᒐᔪᒃᑐᖅ LED ᐊᖁᑎ ᐋᖅᑭᒋᐊᖅᓯᔾᔪᑎᐅᕗᖅ, ᑕᐃᒪᙵᓕᒫᑲᓴᒃ diode ᐃᑳᕈᑎ. ᑖᓐᓇ ᐅᐊᔭᒨᖅᑐᖅ ᐊᓯᔾᔨᖅᓯᕙᒃᐳᖅ AC waveform pulsating DC−ᒧᑦ. diodes ᑕᕝᕙᓂ ᐃᑳᕈᑎᒥ ᐃᖏᕐᕋᑎᑦᑎᑐᐃᓐᓇᖅᐸᒃᐳᑦ ᓴᙱᓂᖓᑕ ᖄᖏᐅᑎᒑᖓᑕ ᑭᒡᓕᒋᑎᑕᐅᔪᒥᒃ, ᑕᐃᒪᐃᑉᐸᒃᖢᓂ ᖃᓂᒋᔭᖓᓂ ᖁᑦᑎᖕᓂᖅᐹᖓᑕ AC sine wave-ᒥ. ᑕᒪᓐᓇ ᓴᖅᑭᑎᑦᑎᓕᖅᐸᒃᐳᖅ ᐊᖁᑎᒥᒃ ᐊᑐᖅᑎᑦᑎᕙᒃᖢᓂ ᓇᐃᑦᑐᒥᒃ, ᓴᙱᔪᒻᒪᕆᖕᒥᒃ ᓱᒃᑲᓕᔪᒥᒃ ᐃᖏᕐᕋᓂᐅᕙᒃᑐᒥᒃ ᐃᒪᓐᓇᐅᙱᖔᖅᑐᖅ, ᐃᖏᕐᕋᑦᑎᐊᖅᑐᒥᒃ, ᑲᔪᓰᓐᓇᖅᑐᒥᒃ ᐃᖏᕐᕋᓂᐅᔪᒥᒃ. ᑖᓐᓇ ᐆᒻᒪᑎᐅᑉ ᐃᖏᕐᕋᓂᖓ ᐱᑕᖃᑦᑎᐊᖅᐳᖅ harmonic frequencies-ᓂᒃ. ᐃᑭᑦᑕᕐᓂᖓ diodes-ᓄᑦ, ᐃᓚᖃᖅᖢᓂ ᖁᑦᑎᒃᑐᒥᒃ-ᓴᙱᓂᓕᖕᒥᒃ ᐊᓯᔾᔨᖅᓯᓂᕐᒥᒃ ᐊᖁᑎᐅᑉ ᐃᓗᐊᒍᑦ ᐆᒻᒪᖁᑎᒧᑦ ᐊᓯᔾᔨᖅᑎᕆᓂᕐᒧᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᒥᒃ, ᑲᔪᓯᓂᖃᑦᑎᐊᖅᑐᒃᑯᑦ ᓇᑲᑎᕆᕙᒃᐳᖅ ᒫᓐᓇ ᐃᖏᕐᕋᓂᕆᔭᐅᕙᒃᑐᒥᒃ, ᐃᓕᐅᖅᑲᐃᒃᑲᓐᓂᖅᖢᓂ ᑕᒪᒃᑯᓂᖓ ᐊᑐᖅᑕᐅᕙᒃᑐᓂᒃ ᐆᒻᒪᖅᑯᒻᒧᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᒧᑦ. ᑐᑭᓕᐊᕐᓂᖃᙱᓐᓂᖅᓴᐅᒍᓂ, ᐊᒻᒪ ᐋᖅᑭᒃᓯᒪᑦᑎᐊᙱᓐᓂᖅᓴᐅᒍᓂ ᐆᒻᒪᖅᑯᑎᖃᕐᕕᖓ, ᒫᓐᓇ ᐃᖏᕐᕋᓂᖓ ᐋᖅᑭᑦᑎᐊᖅᓯᒪᙱᓐᓂᖅᓴᐅᕗᖅ, ᐊᒻᒪ ᖁᑦᑎᖕᓂᖅᓴᐅᓪᓗᓂ THD.
ᖃᓄᐃᓕᐅᖅᑐᖃᓲᖑᕙ ᐃᓗᐊᓂ LED ᐊᖁᑎᐅᑉ ᓴᖅᑭᑎᑦᑎᓂᐊᕐᓗᓂ ᓂᐱᓕᐅᕆᓂᕐᒥᒃ?
ᑕᒪᓐᓇ ᑕᐅᑐᙳᐊᕐᓗᒍ, ᑕᐅᑐᙳᐊᕐᓗᒍ AC ᐆᒻᒪᖅᑯᑎᖃᕐᕕᐅᑉ ᓴᙱᓂᖓ ᒪᔪᕋᔮᖅᑰᔨᓪᓗᓂ. ᑐᑭᓕᐊᖅᑐᒥᒃ ᐆᒻᒪᖅᑯᑎᖃᕐᓂᖅ ᓲᕐᓗ ᐅᖅᑰᓴᐅᑎᑎᑐᑦ ᐃᖏᕐᕋᓂᖃᑦᑎᐊᕋᔭᖅᑐᖅ ᖁᒻᒧᑦ ᐊᒻᒧᓪᓗ ᖃᖅᑲᒧᑦ. ᑐᑭᓕᐊᙱᑦᑐᒥᒃ LED ᐊᖁᑎ, ᑭᓯᐊᓂ, ᓲᕐᓗ ᐱᓱᔪᒃᑐᖅ ᓱᒃᑲᔪᐊᓗᖕᒥᒃ, ᐅᖁᒪᐃᑦᑐᒥᒃ ᐊᓪᓗᕆᐊᖅᐸᒃᖢᓂ ᖃᖅᑲᐅᑉ ᖄᖓᓂ. diode ᐃᑳᕈᑎ ᐋᖅᑭᒋᐊᖅᓯᔾᔪᑎ ᐃᖏᕐᕋᑎᑦᑎᓲᖅ ᑭᓯᐊᓂ AC ᓴᙱᓂᖓ ᖁᑦᑎᖕᓂᖅᓴᐅᒍᓂ ᓴᙱᓂᖓᑕ ᑐᖅᑯᖅᑕᐅᓯᒪᔪᒥᑦ ᐊᖁᑎᐅᑉ ᐃᓯᖅᐸᓪᓕᐊᔪᓄᑦ ᓴᙱᓂᓕᖕᓄᑦ. ᑕᒪᓐᓇ ᕿᓚᒥᑯᓗᒃ ᑕᐃᒪᐃᓲᖑᕗᖅ ᐱᐅᔪᓂᒃ ᐱᐅᙱᑦᑐᓂᒡᓗ ᖁᕝᕙᓯᖕᓂᖅᐹᓂᒃ ᓯᓈᑉ ᐃᖏᕐᕋᓂᖓᓂᒃ. ᑕᐃᒪᐃᓐᓂᕆᔭᖓ ᒫᓐᓇᓕᓴᖅ ᐃᖏᕐᕋᓂᖓᑕ ᐋᖅᑭᒃᓯᒪᓂᖓ ᐃᓚᖃᖅᖢᓂ ᑐᐊᑦᑐᒥᒃ, ᖁᒻᒧᐊᒃᑐᒥᒃ ᑎᒡᓕᖕᓂᖓᓂᒃ ᓵᑦᑐᑯᓘᙱᖦᖢᓂ, ᓯᕕᑐᔪᐊᓘᙱᖦᖢᓂ. ᑖᒃᑯᐊ ᐱᕐᔪᐊᖑᔪᑦ, ᐃᖏᕐᕋᐃᓐᓇᖅᑐᑦ ᑎᓪᓕᕐᓂᐅᔪᑦ ᐃᒪᐃᑦᑑᕗᑦ, ᐱᒐᔪᖕᓂᖓᓂ, ᐃᓗᓕᖃᖅᑐᑦ ᐅᓄᖅᑐᒻᒪᕆᐊᓗᖕᓂᒃ ᓂᐱᓕᐅᕆᔾᔪᑎᓂᒃ. ᑐᙵᕕᓪᓗᐊᑕᖓ 50 Hz-ᒧᑦ ᐃᓗᓕᖓ ᓴᙱᔫᑐᐃᓐᓇᕆᐊᓕᒃ, ᑭᓯᐊᓂ ᐅᔾᔨᕐᓇᖅᑐᒥᒃ ᐆᒻᒪᕆᖕᓂᖃᕐᓂᐊᕐᒥᔪᖅ 150 Hz-ᒥ (ᐱᖓᔪᖓᓐᓂ harmonic), 250 Hz-ᒥ (ᑕᓪᓕᒪᖓᓐᓂ harmonic), 350 Hz-ᒥ (7-ᒋᔭᖓᓂ), ᐊᓯᖏᓐᓂᒡᓗ. ᑖᒃᑯᐊ ᐃᖏᕐᕋᓂᐅᔪᑦ ᐅᑎᖅᐸᓪᓕᐊᕙᒃᐳᑦ ᐊᖁᑎᒥᑦ ᐃᒡᓗᕐᔪᐊᑉ ᐅᐊᔭᖏᓐᓄᑦ ᓯᓚᒻᒧᓪᓗ ᐆᒻᒪᖅᑯᑎᒧᑦ ᓄᑭᓪᓚᐅᑎᒧᑦ. ᐃᑲᔫᑎᖃᖅᐸᙱᓚᑦ ᐊᑑᑎᖃᑦᑎᐊᖅᑐᓄᑦ ᐃᖅᑲᓇᐃᔮᓄᑦ; ᐃᒪᓐᓇᖔᕐᓕ, ᑭᒡᒐᖅᑐᐃᕗᑦ ᐊᑐᑦᑎᐊᙱᖦᖢᑎᒃ ᐆᒻᒪᖅᑯᑎᓂᒃ ᐊᐅᓚᑲᑕᒃᑐᓂᒃ ᐅᐊᔭᒨᖅᑐᓂᒃ, ᐆᓇᖅᓯᑎᑦᑎᓪᓗᑎᒃ ᐊᒻᒪ ᐸᒡᕕᓵᕆᓪᓗᑎᒃ.
ᖃᓄᐃᒻᒪᑦ ᑲᑎᖦᖢᒋᑦ ᓂᐱᓕᐅᕆᓂᖅ ᐱᒻᒪᕆᐊᓘᕙ ᖃᐅᒻᒪᖅᑯᑎᓄᑦ ᐃᓕᐅᖅᑲᐃᓂᕐᒧᑦ?
ᐱᒻᒪᕆᐅᓂᖓ THD ᐱᒋᐊᖅᓯᒪᕗᖅ ᑲᑎᑉᐸᓪᓕᐊᔪᓂᒃ ᓱᕋᒃᑎᕆᔪᓂᒡᓗ ᐊᒃᑐᐃᓂᐅᔪᓂᒃ ᐃᖏᕐᕋᓂᐅᔪᓄᑦ ᐅᐊᔭᒨᖅᑐᓕᒫᓄᑦ. ᐊᑕᐅᓯᖅ LED ᐊᖁᑎ ᖁᑦᑎᒃᑐᒥᒃ THD−ᖃᖅᑐᖅ ᒥᑭᑦᑐᑯᓗᖕᒥᒃ ᐊᒃᑐᖅᓯᓂᖃᑐᐃᓐᓇᕆᐊᓕᒃ. ᑭᓯᐊᓂ, ᒫᓐᓇᓕᓴᐅᔪᒥ ᐃᒡᓗᕐᔪᐊᒥ, ᕼᐊᓐᓇᓚᖏᓐᓃᑦᑐᓂᒃ ᑕᐅᓴᖏᓐᓃᑦᑐᓂᒡᓘᓐᓃᑦ ᑕᐃᒪᐃᑦᑐᓂᒃ ᐊᖁᑎᑕᖃᕈᓐᓇᖅᐳᖅ−LED−ᓂ ᖃᐅᒻᒪᖅᑯᑎᓂ, ᖃᕋᓴᐅᔭᕐᓂ, ᖃᕋᓴᐅᔭᓂ, ᐊᒻᒪ ᐊᒥᓱᐊᓗᖕᓂ ᐊᓯᖏᓐᓂ ᐱᖁᑎᓂ. ᐃᖏᕐᕋᓂᐅᔪᑦ ᑕᒪᒃᑯᓇᙵᑦ ᑐᑭᓕᐊᙱᑦᑐᓂᑦ ᓴᙱᓂᓕᖕᓂᑦ ᑲᑎᖦᖢᑎᒃ ᓄᑭᓪᓚᐅᑎᓄᑦ ᐊᒻᒪ ᓯᐊᒻᒪᒃᑎᕆᔾᔪᑎᓄᑦ. ᑕᒪᓐᓇ ᑲᑎᑉᐸᓪᓕᐊᓂᖅ ᓴᖅᑭᑎᑦᑎᓕᖅᐸᒃᐳᖅ ᐱᐅᙱᑦᑐᓂᒃ ᓴᖅᑭᑦᑐᓂᒃ. ᐃᕐᖐᓐᓇᖅ ᐆᓇᖅᓯᓗᐊᕐᓂᖅ. ᑲᑎᙵᓂᐅᔪᑦ ᐃᖏᕐᕋᓂᐅᔪᑦ, ᐱᓗᐊᙳᐊᖅᑐᒥ ᐱᖓᔪᖓᓐᓂ ᑲᑎᙵᓂᐅᔪᒥ ᐊᒻᒪ ᐊᒥᓱᓂ (ᑕᐃᔭᐅᔪᑦ "ᐱᖓᓱᐃᓕᖅᑲᖓᔪᑦ" harmonics), ᓄᖅᑲᖅᑎᑦᑎᕙᙱᓚᑦ ᓄᑭᓪᓚᐅᑎᐅᑉ ᓴᕕᒐᐅᔭᖓᓂ ᑕᐃᒪᐃᑉᐸᖕᓂᖏᓐᓂ. ᐃᒪᓐᓇᖔᕐᓕ, ᑲᑎᑉᐸᓪᓕᐊᓕᖅᐸᒃᐳᑦ, ᐱᑎᑦᑎᓪᓗᓂ ᓄᑭᓪᓚᐅᑎᐅᑉ ᓄᑭᓪᓚᐅᑎᖓᓂᒃ ᐊᖏᔪᑲᓪᓚᖕᒥᒃ ᐃᖏᕐᕋᓂᖃᓕᖅᐸᒃᖢᓂ ᓇᓃᓐᓂᖏᑦ ᓇᓕᒧᒌᑦᑎᐊᕋᓗᐊᖅᑎᓪᓗᒋᑦ. ᐆᓇᖅᓯᓗᐊᓕᕈᓐᓇᖅᑐᖅ, ᐃᑭᑐᐃᓐᓇᕆᐊᖃᒻᒪᕆᒃᑐᖅ. ᓄᑭᓪᓚᐅᑎᑦ ᐋᖅᑭᒃᑕᐅᓯᒪᖕᒥᔪᑦ ᐆᒻᒪᖅᑯᑎᖃᖅᑎᑦᑎᔪᓐᓇᖅᖢᑎᒃ ᐊᑐᖅᑕᐅᓪᓗᐊᑕᖅᑐᒃᑯᑦ; ᑲᑎᙵᓂᐅᔪᑦ ᐃᖏᕐᕋᓂᐅᔪᑦ ᐱᑎᑦᑎᕙᒃᐳᑦ ᐊᖏᒡᓕᒋᐊᖅᑎᑦᑎᔪᒥ ᐃᖏᕐᕋᓂᐅᔪᒥ ᐊᓯᐅᔨᓂᐅᔪᒥ ᐊᒻᒪ hysteresis ᐊᓯᐅᔨᓂᐅᔪᒥ ᓂᐱᖅᑲᕐᓇᐅᑎᖏᓐᓂ, ᓴᖅᑭᑎᑦᑎᓪᓗᓂ ᐆᓇᖅᓯᓗᐊᕐᓂᐅᔪᒥ, ᐊᑐᕐᓂᖃᑦᑎᐊᙱᓐᓂᐅᔪᒥ, ᐊᒻᒪ ᕿᓚᒻᒥᐅᓂᖅᓴᒥ ᐊᑯᓂᐅᓂᐅᔪᒥ. ᐅᐊᔭᒨᖅᑐᑦ ᖃᒥᑦᑕᐅᑎᖏᑦ ᐊᒻᒪ ᐃᑭᔾᔭᐃᒃᑯᑎᖏᑦ ᐊᒃᑐᖅᑕᐅᔪᓐᓇᕐᒥᔪᑦ, ᖃᒥᑦᑎᐊᙱᑐᐃᓐᓇᕆᐊᖃᕐᓂᖏᓐᓄᑦ ᐃᖏᕐᕋᓂᖃᑦᑎᐊᙱᖦᖢᑎᒃ, ᖁᐊᖅᓵᕐᓇᖅᑐᒦᑎᑦᑎᙱᖦᖢᑎᒃ.
ᖃᓄᖅ ᖁᑦᑎᒃᑐᒥ THD ᐊᒃᑐᖅᓯᕙᒃᐸ ᐆᒻᒪᖅᑯᒻᒧᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᒥᒃ ᐊᑐᕐᓂᖃᑦᑎᐊᕐᓂᕐᒥᒃ ᐊᓯᖏᓐᓂᒡᓗ ᐊᑐᖅᑕᐅᕙᒃᑐᓂᒃ?
ᐅᖓᑖᒍᑦ ᑎᒥᒃᑯᑦ ᐅᓗᕆᐊᓇᕐᓂᐅᔪᑦ ᐆᓇᖅᓯᓗᐊᕐᓂᕐᒧᑦ, ᖁᑦᑎᒃᑐᒥ THD ᐱᐅᔪᓐᓃᖅᑎᑦᑎᕐᔪᐊᓲᖑᕗᖅ ᑕᒪᐃᓐᓂᒃ ᐃᖏᕐᕋᑦᑎᐊᕐᓂᕆᔭᐅᔪᒥᒃ ᐆᒻᒪᖅᑯᑎᖃᐅᑎᒧᑦ. ᐃᖏᕐᕋᓂᐅᔪᑦ ᑭᒡᒐᖅᑐᐃᕗᑦ ᐊᑐᑦᑎᐊᙱᓐᓂᕐᒥᒃ ᐆᒻᒪᖅᑯᑎᒥᒃ−ᐊᑑᑎᖃᙱᑦᑐᑦ ᑭᓯᐊᓂ ᓱᓕ ᐊᐅᓚᑎᑕᐅᔪᑦ, ᓅᑎᑕᐅᔪᑦ, ᐊᒻᒪ ᓄᖑᑉᐸᓪᓕᐊᓪᓗᑎᒃ ᐆᓇᖅᓯᕙᓪᓕᐊᓪᓗᑎᒃ ᓄᑭᓪᓚᐅᑎᓄᑦ, ᐅᐊᔭᓄᑦ, ᐊᓯᖏᓐᓄᓪᓗ ᐱᖁᑎᓄᑦ. ᑕᒪᓐᓇ ᐊᖏᒡᓕᒋᐊᖅᑎᑦᑎᕙᒃᐳᖅ ᑲᑎᖦᖢᒋᑦ ᐆᒻᒪᖅᑯᒻᒥᒃ ᐱᔭᐅᕙᒃᑐᒥᒃ ᐆᒻᒪᖅᑯᑎᒥᑦ, ᓴᖅᑭᑎᑦᑎᓕᖅᐸᒃᖢᓂ ᐊᑭᑐᓂᖅᓴᓂᒃ ᐆᒻᒪᖅᑯᑎᓄᑦ ᐊᑭᓕᖅᓱᒐᒃᓴᓂᒃ, ᐱᓗᐊᙳᐊᖅᖢᓂ ᑮᓇᐅᔭᓕᐅᕋᓱᒃᐸᒃᑐᓄᑦ ᓴᓇᕝᕕᖕᓄᓪᓗ ᐊᑐᖅᑎᐅᕙᒃᑐᓄᑦ ᐊᑭᓕᒐᒃᓴᖅᑖᖅᑎᑕᐅᑐᐃᓐᓇᕆᐊᖃᖅᖢᑎᒃ ᐊᑦᑎᒃᑐᒧᑦ ᐆᒻᒪᖅᑯᒻᒧᑦ ᐱᔾᔪᑕᐅᔪᒧᑦ, ᑕᒪᓐᓇᓗ ᐊᒃᑐᐊᓂᖃᓪᓚᕆᒃᖢᓂ ᓇᓕᒧᒌᙱᓐᓂᕐᒧᑦ ᐊᓯᔾᔨᖅᓯᓯᒪᓂᕐᒧᑦ. ᐊᓯᔾᔨᕈᑎᖓ ᐅᓚᕕᓴᐃᓲᖑᒋᕗᖅ ᐊᐅᓚᑦᑎᑦᑎᐊᕐᓂᕐᒥᒃ ᐊᓯᖏᓐᓂᒃ ᐊᒃᑐᖅᑕᐅᓴᕋᐃᑦᑐᓂᒃ ᐅᐊᔭᒨᖅᑐᓂᒃ ᐊᑦᑕᑕᖅᑎᑕᐅᔪᓂᒃ ᑖᔅᓱᒧᖓᔅᓴᐃᓐᓇᖅ ᐆᒻᒪᖅᑯᑎᖃᐅᑎᒧᑦ. ᓴᙱᓂᖓᑕ ᐊᓯᔾᔨᖅᐸᓪᓕᐊᓂᖓ, ᑕᐃᒪᐃᑎᑕᐅᓪᓗᓂ ᑲᑎᙵᓂᐅᔪᓄᑦ ᐃᖏᕐᕋᓂᐅᔪᓄᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᒃᑯᑦ impedance-ᑯᑦ, ᐱᑎᑦᑎᔪᓐᓇᖅᐳᖅ 0-ᐃᑳᕐᕕᐅᕙᒃᑐᓂᒃ ᓴᙱᓂᖓᑕ sine wave-ᒥ ᓅᑎᑦᑎᓗᓂ ᓂᐱᖅᑯᖅᑐᓗᐊᓕᕐᓗᓂᓘᓐᓃᑦ. ᐅᓄᖅᑐᑦ ᐅᐊᔭᒨᖅᑐᑦ ᐊᑐᓲᖑᕗᑦ ᑖᒃᑯᓂᖓ 0-ᓂᒃ ᐃᑳᕐᕕᖕᓂᒃ ᖃᖓᙳᕌᖓᑦ ᐊᒻᒪ ᐊᐅᓚᑦᑎᔾᔪᑕᐅᓪᓗᑎᒃ. ᓴᙱᓂᖓ ᐊᓯᔾᔨᖅᓯᒪᑎᓪᓗᒍ ᐊᔪᓕᕈᑕᐅᔪᓐᓇᖅᐳᖅ, ᓴᖅᑭᑎᑦᑎᓕᕐᓗᓂ ᐊᓯᔾᔨᖅᑕᖅᑐᓂᒃ ᐃᓕᖅᑯᓯᕆᔭᐅᔪᓂᒃ ᖃᕆᑕᐅᔭᓄᑦ, ᐃᓗᐊᖅᓴᐃᓂᕐᒧᑦ ᐱᖁᑎᓄᑦ, ᓴᓇᕝᕕᖕᓄᓪᓗ ᐊᐅᓚᑦᑎᓂᕐᒧᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᓄᑦ. ᐃᒪᓐᓇᐅᕗᖅ, ᖁᑦᑎᒃᑐᒥ THD ᑕᒪᐃᓐᓂᓕᒫᖅ ᐆᒻᒪᖅᑯᑎᐅᑉ ᐊᕙᑎᖓᓂ "ᓂᐱᖅᑯᖅᑐᔪᐊᓘᕗᖅ" ᐊᒻᒪ ᑕᑎᒋᔭᒃᓴᐅᙱᖦᖢᓂ, ᐊᒃᑐᐃᓪᓗᓂ ᑭᓱᓕᒫᓂᒃ ᖃᐅᒻᒪᖅᑯᑎᓂᒃ ᐱᖁᑎᓄᑦ ᑲᑉᐳᑎᓯᒪᔪᓄᑦ ᐊᑭᓐᓇᒧᑦ ᖃᓂᒋᔭᖓᓄᑦ.
ᑭᓲᕙ ᐱᐅᔪᖅ THD ᖁᕝᕙᓯᖕᓂᖓ LED ᐊᖁᑎᓄᑦ ᖃᐅᒻᒪᖅᑯᑎᓄᓪᓗ?
ᐊᑲᐅᙱᓕᐅᕈᑕᐅᔪᑦ ᐱᔾᔪᑕᐅᓪᓗᑎᒃ ᖁᑦᑎᒃᑐᒥ THD−ᒧᑦ, ᓴᓇᕝᕕᖕᒥ ᒪᓕᒃᑕᐅᕙᒃᑐᑦ ᐊᒻᒪ ᐱᐅᓛᑦ ᐱᓕᕆᔾᔪᓯᑦ ᓴᖅᑭᓯᒪᓕᖅᐳᑦ ᓇᓗᓇᐃᖅᓯᓇᓱᒃᖢᑎᒃ ᓈᒻᒪᒋᔭᐅᔪᓂᒃ ᑭᒡᓕᒋᔭᐅᔪᓂᒃ. ᒫᓐᓇᓕᓴᕐᓄᑦ ᖃᐅᒻᒪᖅᑯᑎᓄᑦ ᐱᖁᑎᓄᑦ, ᐊᑐᖅᑕᐅᒐᔪᒃᐳᖅ ᐅᐊᔭᒨᖅᑐᓄᑦ ᐊᑐᖅᑕᐅᔭᕆᐊᓕᖕᓄᑦ ᓄᑖᓄᑦ ᑮᓇᐅᔭᓕᐅᕋᓱᒡᕕᖕᓄᑦ ᐊᒻᒪ ᓴᓇᕝᕕᖕᓄᑦ ᐃᓕᐅᖅᑲᖅᑕᐅᔪᓄᑦ ᐱᔭᕆᐊᖃᖅᑎᑦᑎᓪᓗᑎᒃ ᐊᖏᓛᖑᔪᓐᓇᖅᑐᒥᒃ ᑲᑎᖦᖢᒋᑦ ᑲᑎᙵᓂᖏᑕ ᐊᓯᔾᔨᖅᑕᕐᓂᖏᑦ ᐃᓛᒃᑰᖅᑐᓄᑦ LED ᖃᐅᒻᒪᖅᑯᑎᓄᑦ ᐅᕝᕙᓘᓐᓃᑦ ᐊᖁᑎᓄᑦ ᑐᖔᓃᓪᓗᓂ 20%, ᐊᒻᒪ ᐃᒪᓐᓇᐅᒐᔪᒃᖢᓂ ᐱᑐᐃᓐᓇᐅᙱᓐᓂᖅᓴᖅ ᑐᕌᒐᕆᔭᐅᔪᖅ ᑐᖔᓃᓪᓗᓂ 15% ᐅᕝᕙᓘᓐᓃᑦ 10% ᐋᖅᑭᒃᑕᐅᓯᒪᓪᓗᓂ. THD 15% ᑐᖔᓃᑉᐸᑦ ᐱᐅᓂᕋᖅᑕᐅᒐᔪᒃᐳᖅ, ᓇᓗᓇᐃᖅᓯᓪᓗᓂ ᐊᖁᑎᐅᑉ ᓴᓇᓯᒪᓂᖓ ᐃᓚᖃᕐᓂᖓᓂᒃ ᐊᑑᑎᖃᑦᑎᐊᖅᑐᓂᒃ harmonic filtering-ᒥᒃ. THD 10% ᑐᖔᓂ ᐱᐅᑦᑎᐊᖅᑐᖅ. ᑕᒪᓐᓇ ᑐᑭᖃᖅᐳᖅ ᐊᖁᑎ ᓴᓗᒪᓂᖅᓴᒥᒃ, ᓱᐴᖅᑐᕐᓂᖅᓴᒥᒃ ᐃᖏᕐᕋᓂᖃᓕᖅᐳᖅ, ᒥᒃᖠᒋᐊᖅᑎᑦᑎᓪᓗᓂ ᐊᒃᑐᖅᓯᓂᕆᔭᖓᓂᒃ ᐆᒻᒪᖅᑯᑎᖃᕐᕕᒋᔭᐅᔪᒥᒃ. ᐸᕐᓇᐃᓂᐊᓕᕌᖓᕕᑦ ᐊᖏᔪᐊᓗᖕᒥᒃ LED ᓄᑖᙳᕆᐊᖅᑎᑦᑎᓂᕐᒥᒃ ᓄᑖᒥᒡᓘᓐᓃᑦ ᐃᒡᓗᓕᐅᕐᓂᐊᕐᓗᓂ, ᐱᕐᔪᐊᖑᕗᖅ ᓇᓗᓇᐃᖅᓯᑦᑎᐊᕐᓂᖅ ᖃᐅᒻᒪᖅᑯᑎᓂᒃ ᐊᑦᑎᒃᑐᒥᒃ THD−ᖃᖅᑐᓂᒃ. ᐊᑭᑐᓂᖅᓴᐅᕌᕐᔪᒍᓐᓇᕋᓗᐊᖅᑎᓪᓗᒋᑦ ᐊᑭᑭᑦᑐᒻᒪᕆᖕᓂᑦ, ᖁᑦᑎᒃᑐᒥᑦ THD−ᒥᑦ ᐊᑐᖅᑕᐅᖔᕈᓐᓇᖅᑐᓂᑦ, ᐊᑯᓂᐅᔪᒧᑦ ᐃᑲᔫᑎᑦ ᐊᖏᔪᑲᓪᓚᐅᕗᑦ. ᓇᓗᙱᑦᑎᐊᕋᓱᒃᐸᒃᐳᑦ ᐊᑕᖏᖅᖢᒍ ᐆᒻᒪᖅᑯᒻᒧᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᖅ ᐊᐅᓚᑦᑎᐊᕋᓗᐊᕐᒪᖔᑦ ᑲᔪᓯᓂᖃᑦᑎᐊᖅᑐᒃᑯᑦ, ᖁᐊᖅᓵᕐᓇᙱᑦᑐᒃᑯᑦ, ᑕᑎᒋᔭᒃᓴᐅᔪᓐᓇᖅᑐᒃᑯᓪᓗ, ᐱᑕᖃᖅᑎᑦᑎᙱᖦᖢᓂ ᐊᑭᑐᔪᓂᒃ ᐸᒡᕕᓇᖅᑐᓂᒃ ᐹᓪᓚᒃᑐᓂᒃ, ᓄᑭᓪᓚᐅᑎᓄᑦ ᐆᓇᖅᓯᓗᐊᖅᑎᑦᑎᓂᕐᒥᒃ, ᐆᒻᒪᖅᑯᑏᓪᓗ ᐱᐅᓂᖏᓐᓄᑦ ᐃᓱᒪᒋᔭᒃᓴᓂᒃ ᐊᒃᑐᖅᓯᑐᐃᓐᓇᕆᐊᓕᖕᓂᒃ ᑕᒪᐃᓐᓂᑦᑎᐊᖅ ᐃᓂᒋᔭᐅᔪᒥᒃ. ᑮᓇᐅᔭᓕᐅᕋᓱᐊᕐᓂᖅ ᐊᑦᑎᒃᑐᒥᒃ-THD LED ᐊᖁᑎᓂᒃ ᐱᕈᖅᑎᑦᑎᓂᐅᕗᖅ ᖃᓄᐃᙱᑦᑎᐊᕐᓂᕐᒧᑦ ᐊᑯᓂᐅᔪᒧᓪᓗ ᐆᒻᒪᖅᑯᑎᓄᑦ ᓇᑉᐸᖅᑎᖅᑕᐅᓯᒪᔪᓕᒫᓄᑦ.
ᐱᓪᓗᐊᑕᐅᓂᖏᑦ ᑲᑎᖦᖢᒋᑦ harmonic distortion (THD)
ᐅᓇ ᑭᑉᐹᕆᒃᓯᓕᖅᓯᒪᔪᖅ ᓇᐃᒡᓕᒋᐊᖅᑎᑦᑎᕗᖅ ᑕᐅᑐᒃᑕᐅᓪᓗᐊᑕᖅᐸᒃᑐᓂᒃ ᐊᒃᑐᐊᓂᓕᖕᓂᒃ THD−ᒧᑦ ᐱᔾᔪᑎᖃᖅᖢᑎᒃ LED−ᓂᒃ ᖃᐅᒻᒪᖅᑯᑎᓂᒃ.
| ᑕᐅᑐᒐᖅ | ᑐᑭᖓ / ᓇᓗᓇᐃᔭᐅᑎ | ᐊᒃᑑᑎᔪᑦ / ᐱᒻᒪᕆᐅᓂᖏᑦ ᖃᐅᒻᒪᖅᑯᑏᑦ |
|---|---|---|
| ᐱᓪᓗᐊᑕᖅ ᐊᑯᓚᐃᓐᓂᖓ | ᐆᒻᒪᖁᑎᐅᑉ ᖃᓄᑎᒋᐅᓂᖓ (ᓲᕐᓗ, 50 Hz ᐅᕝᕙᓘᓐᓃᑦ 60 Hz). | ᐱᔭᐅᔪᒪᔪᖅ, ᓴᓗᒪᔪᖅ sine wave-ᖑᓂᕋᖅᑕᐅᔪᖅ ᐱᖁᑎ ᐋᖅᑭᒃᑕᐅᓯᒪᓪᓗᓂ ᐊᑐᖅᑕᐅᓂᐊᕐᓗᓂ. |
| ᓂᐱᙳᐊᑦ | ᓴᙱᓂᖏᑦ ᐅᕝᕙᓘᓐᓃᑦ ᐃᖏᕐᕋᓂᐅᔪᑦ ᓈᓴᐅᑎᑎᒍᑦ ᐊᒥᓱᐃᖅᑕᖅᑐᑦ ᐱᓪᓗᐊᑕᐅᑉ ᓴᙱᓂᖓᑕ (ᓲᕐᓗ, 150 Hz, 250 Hz). | ᐊᐅᓚᑕᐅᔪᑦ ᑐᑭᓕᐊᙱᑦᑐᒃᑯᑦ ᐆᒻᒪᖅᑯᑎᑐᖅᑐᓄᑦ ᓲᕐᓗ LED drivers; ᑭᒡᒐᖅᑐᐃᔪᑦ ᐊᑐᑦᑎᐊᙱᓐᓂᕐᒥᒃ ᐆᒻᒪᖅᑯᑎᒥᒃ ᐊᒻᒪ ᐱᐅᔪᓐᓃᖅᑎᑦᑎᓪᓗᑎᒃ. |
| ᑲᑎᖦᖢᒋᑦ ᓂᐱᙳᐊᑦ ᐊᓯᔾᔨᖅᑕᕐᓂᖏᑦ (THD) | ᐆᒃᑐᕋᐅᑎ ᑲᑎᖦᖢᒋᑦ ᐆᒻᒪᖅᑯᑎᑦ ᑲᑎᙵᓂᓕᒫᖏᓐᓂ ᑕᐅᑐᒃᖢᒋᑦ ᑐᙵᕕᖏᑦ, ᐅᖃᐅᓯᐅᓪᓗᓂ ᐊᔾᔨᒌᙱᓐᓂᖏᑦ ᐳᓴᓐᑎᖓᒍᓪᓘᓐᓃᑦ. | ᓇᓗᓇᐃᒃᑯᑕᓪᓗᐊᑕᖅ ᐆᒻᒪᖅᑯᑎᐅᑉ ᐱᐅᓂᖓᓂᒃ. ᐊᑦᑎᖕᓂᖅᓴᖅ THD ᑐᑭᖃᖅᐳᖅ ᓴᓗᒪᓂᖅᓴᒥᒃ ᐆᒻᒪᖅᑯᑎᒥᒃ ᐊᒃᓱᕈᕐᓇᙱᓐᓂᖅᓴᐅᓗᓂᓗ ᐆᒻᒪᖅᑯᑎᓄᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᓄᑦ. |
| ᑐᑭᓕᐊᙱᑦᑐᒃᑯᑦ ᐃᓕᐅᖅᑲᐃᓂᖅ | ᐆᒻᒪᖅᑯᑎ ᐆᒻᒪᖅᑯᑎ ᐊᔾᔨᖃᙱᖦᖢᓂ ᓴᙱᓂᖓᓄᑦ, ᓄᑭᓪᓚᐅᑎᒥᒃ ᐊᑐᖅᖢᓂ ᕿᓚᒥᑯᓗᒃ. | LED−ᒧᑦ ᐊᖁᑏᑦ ᐊᑐᖅᑕᐅᒐᔪᒃᐸᒃᑐᑦ ᑐᑭᓕᐊᙱᖦᖢᑎᒃ ᓴᙱᓂᓕᖕᓄᑦ; ᓴᓇᓯᒪᓂᖏᑦ ᖃᐅᔨᔾᔪᑕᐅᕙᒃᐳᑦ ᖃᓄᑎᒋ ᓂᐱᓕᐅᕆᔪᓐᓇᕐᓂᖏᓐᓂ ᓴᖅᑭᑎᑦᑎᓂᖏᓐᓂ. |
| ᐊᑦᑎᒃᑐᖅ THD (ᓲᕐᓗ, <15%) | ᓇᓗᓇᐃᖅᓯᔪᖅ ᓴᓇᓯᒪᑦᑎᐊᖅᑐᒥᒃ ᐊᖁᑎᒥᒃ ᐱᐅᔪᒥᒃ ᓴᙱᓂᖓᑕ ᐃᓗᓕᖏᓐᓂᒃ ᐋᖅᑭᒋᐊᖅᓯᓂᕐᒥᒃ ᐊᒻᒪ ᓱᕈᔾᔭᐃᒃᑯᑎᒥᒃ. | ᒥᑭᑦᑐᒥᒃ ᐊᒃᑐᖅᓯᓇᔭᖅᑐᖅ ᐆᒻᒪᖅᑯᑎᖃᐅᑎᒥᒃ, ᐅᖅᑰᓯᓗᐊᙱᓐᓂᖅᓴᐅᓗᓂ, ᐊᑐᑦᑎᐊᕐᓂᖅᓴᐅᓗᓂ ᐊᑐᖅᑕᐅᕙᒃᑐᖅ, ᒪᓕᑦᑎᐊᕐᓂᖅ ᐊᑐᖅᑕᐅᔭᕆᐊᓕᖕᓂᒃ. |
| ᖁᕝᕙᓯᒃᑐᖅ THD (ᓲᕐᓗ, >30%) | ᓇᓗᓇᐃᖅᓯᔪᖅ ᐋᖅᑭᒃᓯᒪᑦᑎᐊᙱᓐᓂᖓᓂᒃ, ᐊᑭᑭᑦᑐᒥᒃ ᐊᖁᑎᒥᒃ ᓱᕈᔾᔭᐃᒃᑯᑎᖃᓗᐊᙱᖦᖢᓂ. | ᐆᓇᖅᓯᓗᐊᖅᑐᑦ ᓄᑭᓪᓚᐅᑎᑦ ᐊᒻᒪ ᓄᑭᓪᓚᐅᑎᑦ, ᖃᒥᑦᑕᐅᑎᑦ ᖃᒥᑦᑕᐅᑎᖏᑦ, ᐆᒻᒪᖅᑯᑎᒥᒃ ᐊᑐᓗᐊᕐᓂᖅ, ᐸᒡᕕᓵᕆᓂᖅ ᐊᓯᖏᓐᓂᒃ ᐱᖁᑎᓂᒃ. |
ᐃᓱᓕᔾᔪᑎᒋᓗᒍ, ᑲᑎᖦᖢᒋᑦ ᓂᐱᓕᐅᕆᓂᖅ ᐱᕐᔪᐊᖑᕗᖅ ᑭᓯᐊᓂ ᑕᑯᔭᐅᒐᔪᙱᖦᖢᓂ ᖃᐅᒻᒪᖅᑯᑏᑦ ᐱᐅᓂᖏᓐᓂᒃ. ᐆᒃᑐᕋᐅᑎᐅᔪᖅ "ᐅᐊᔭᒨᖅᑐᑦ ᓂᐱᖏᑦ" ᐃᓕᔭᐅᔪᑦ ᐆᒻᒪᖅᑯᑎᓄᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᓄᑦ ᑐᑭᓕᐊᙱᑦᑐᒃᑯᑦ ᐱᖁᑎᓄᑦ ᓲᕐᓗ LED drivers. ᐃᓚᖓᒍᑦ THD ᓱᖁᑎᒃᓴᙱᖦᖢᓂ ᒫᓐᓇᓕᓴᕐᓄᑦ ᐅᐊᔭᒨᖅᑐᓄᑦ, ᖁᑦᑎᒃᑐᒦᓐᓂᖏᑦ ᓱᕋᐃᔪᓐᓇᖅᐳᑦ ᐃᖏᕐᕋᑦᑎᐊᕐᓂᕐᒧᑦ, ᐊᑦᑕᕐᓇᖅᑕᐃᓕᒪᓂᕐᒧᑦ, ᐊᒻᒪ ᐱᖁᑎᑦ ᐊᑯᓂᐅᔪᓐᓇᕐᓂᖏᓐᓄᑦ. ᑭᓇᑐᐃᓐᓇᕐᒧᑦ ᓇᓗᓇᐃᖅᓯᔪᓄᑦ ᐃᓕᐅᖅᑲᐃᔪᓄᓪᓘᓐᓃᑦ LED−ᓂᒃ ᖃᐅᒻᒪᖅᑯᑎᓂᒃ, ᓯᕗᓪᓕᖅᐸᐅᑦᑎᐅᔾᔨᓂᖅ ᖃᐅᒻᒪᖅᑯᑎᓂᒃ ᐊᖁᑎᓂᒡᓗ ᐊᑦᑎᒃᑐᒥᒃ THD−ᐃᒪᓐᓇᐅᒐᔪᒃᐸᒃᖢᓂ 15% ᑐᖔᓃᒐᔪᒃᖢᓂ−ᐱᒻᒪᕆᐊᓘᕗᖅ ᓇᓗᙱᑦᑎᐊᕈᒪᓂᕐᒧᑦ ᐊᑐᖅᑕᐅᑦᑎᐊᕈᓐᓇᖅᑐᒥᒃ, ᑲᔪᓯᓂᖃᑦᑎᐊᖅᑐᒥᒃ, ᖁᐊᖅᓵᕐᓇᙱᑦᑐᒥᒡᓗ ᐆᒻᒪᖅᑯᒻᒧᑦ ᐃᓕᐅᖅᑲᐃᓂᕐᒥᒃ ᑲᔪᓯᑎᑦᑎᔪᒥᒃ ᐊᑕᖐᑦᑎᐊᖅᑐᒥᒃ ᐱᓂᐊᕐᓂᕋᖅᑕᐅᓯᒪᔪᒥᒃ LED−ᒧᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᓄᑦ.
ᐊᐱᖅᑯᑕᐅᒐᔪᒃᑐᑦ ᑲᑎᖦᖢᒋᑦ ᓂᐱᙳᐊᑦ ᐋᖅᑭᑦᑎᐊᖅᓯᒪᙱᓐᓂᖏᓐᓄᑦ
ᑭᓲᕙ ᐊᑦᑕᕐᓇᙱᑦᑐᖅ ᓈᒻᒪᒋᔭᐅᔪᕐᓘᓐᓃᑦ THD ᖁᕝᕙᓯᖕᓂᖓ LED−ᒧᑦ ᖃᐅᒻᒪᖅᑯᑎᒧᑦ?
ᑕᒪᐃᓐᓄᑲᓴᒃ ᑮᓇᐅᔭᓕᐅᕋᓱᒡᕕᖕᓄᑦ ᓴᓇᕝᕕᖕᓄᓪᓗ ᖃᐅᒻᒪᖅᑯᑎᓄᑦ ᐊᑐᖅᑕᐅᔭᕆᐊᓕᖕᓄᑦ, ᑲᑎᖦᖢᒋᑦ harmonic distortion (THD) ᑐᖔᓃᑉᐸᑦ 20% ᐃᓱᒪᒋᔭᐅᔪᖅ ᓈᒻᒪᒋᔭᐅᔪᖅ, THD ᑐᖔᓃᓪᓗᓂ 15% ᐱᔭᐅᔪᒪᓂᖅᓴᐅᓪᓗᓂ ᓇᓗᓇᐃᖅᓯᓪᓗᓂᓗ ᐱᐅᑦᑎᐊᖅᑐᒥᒃ ᐊᖁᑎᒥᒃ. ᐃᓚᖏᑦ ᐱᐅᓂᖅᐹᑦ ᓂᐅᕕᐊᒃᓴᐃᑦ ᑎᑭᐅᑎᔪᓐᓇᒻᒪᕆᒃᐳᑦ THD 10% ᑐᖔᓂ. ᐊᑦᑎᖕᓂᖅᓴᐅᒃᐸᑦ THD, ᐊᒃᓱᕈᕐᓇᙱᓐᓂᖅᓴᐅᓇᔭᖅᐳᖅ ᐆᒻᒪᖅᑯᑎᓄᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᓄᑦ ᐱᐅᓂᖅᓴᐅᓗᓂᓗ ᐊᑕᖏᕐᓗᒍ ᐆᒻᒪᖅᑯᒻᒧᑦ ᐱᐅᓂᖓ.
ᖁᑦᑎᒃᑐᒥ THD ᓱᕋᐃᔪᓐᓇᖅᐸ ᐊᓯᖏᓐᓂᒃ ᐱᖁᑎᓂᒃ ᐃᒡᓗᕐᔪᐊᖁᑎᓐᓂ?
ᐄ, ᑐᕌᖓᓗᐊᙱᑦᑐᒥᒃ. ᖁᑦᑎᒃᑐᒥ THD, ᐱᓗᐊᙳᐊᖅᑐᒥ ᐊᒥᓱᓂ ᑐᑭᓕᐊᙱᑦᑐᓂ ᐆᒻᒪᖅᑯᑎᖃᕐᓂᐅᔪᓂ, ᐱᑎᑦᑎᔪᓐᓇᖅᐳᖅ ᐊᖏᔪᑲᓪᓚᖕᒥ ᓴᙱᓂᖓᑕ ᐊᓯᔾᔨᕐᓂᖓᓂ. ᑖᓐᓇ ᐊᓯᔾᔨᖅᓯᒪᔪᖅ ᓴᙱᓂᖓᑕ ᐊᐅᓚᓂᖓ ᐅᓚᕕᓴᐃᔪᓐᓇᖅᐳᖅ ᖃᖓᒃᑰᕐᓂᖓᓄᑦ ᐊᐅᓚᓂᖓᓄᓪᓗ ᐊᓯᖏᓐᓄᑦ ᐊᒃᑐᖅᑕᐅᓴᕋᐃᑦᑐᓄᑦ ᐅᐊᔭᒨᖅᑐᓄᑦ ᐱᖁᑎᓄᑦ, ᓲᕐᓗ ᖃᕆᑕᐅᔭᓄᑦ, ᐃᓗᐊᖅᓴᐃᓂᕐᒧᑦ ᐊᑐᖅᑕᐅᕙᒃᑐᓄᑦ, ᐋᖅᑭᒃᑕᐅᔪᓐᓇᖅᑐᓄᓪᓗ ᐊᑐᖅᑕᐅᕙᒃᑐᓄᑦ ᐊᐅᓚᑦᑎᔾᔪᑕᐅᕙᒃᑐᓄᑦ (PLCs). ᓱᕋᒃᑕᐅᓪᓗᐊᑕᖅᑐᖅ, ᑭᓯᐊᓂ, ᐆᓇᖅᓯᓗᐊᕐᓂᖓᓄᑦ ᓄᑭᓪᓚᐅᑎᑦ, ᓴᕕᒐᐅᔭᐃᑦ, ᐊᒻᒪ ᐊᐅᓚᐅᑎᑦ.
ᖃᓄᖅ ᒥᒃᖠᒋᐊᖅᑎᑦᑎᔪᓐᓇᖅᐳᖓ THD-ᒥᒃ ᖃᐅᒻᒪᖅᑯᑎᓄᑦ ᐃᓕᐅᖅᑲᐃᓂᕐᓄᑦ?
ᐊᑑᑎᖃᓛᖑᔪᖅ ᒥᒃᖠᒋᐊᖅᑎᑦᑎᓂᐊᕐᓗᓂ THD-ᒥᒃ ᓇᑭᙶᕐᓂᖓᓂᑦ: ᓂᕈᐊᕐᓗᑎᑦ LED ᐊᖁᑎᓂᒃ ᖃᐅᒻᒪᖅᑯᑏᓪᓗ ᐋᖅᑭᒃᑕᐅᓯᒪᓪᓗᐊᑕᖅᑐᑦ ᐊᑦᑎᒃᑐᒥ ᓂᐱᖅᑯᖅᑐᓗᐊᙱᑦᑐᓄᑦ. ᕿᓂᖅᐸᒡᓗᑎᑦ ᐱᖁᑎᓂᒃ THD-ᒧᑦ ᐊᑐᖅᑕᐅᔭᕆᐊᓕᖕᓂᒃ 15% ᑐᖔᓃᑦᑐᓂᒃ. ᐃᓕᐅᖅᑲᖅᑕᐅᕙᒌᖅᑐᓂ, ᐊᔪᕐᓇᙱᑐᐃᓐᓇᕆᐊᓕᒃ ᐃᓕᐅᖅᑲᐃᓗᓂ harmonic ᓱᕈᔾᔭᐃᒃᑯᑎᓂᒃ, ᑭᓯᐊᓂ ᑕᒪᓐᓇ ᐱᔭᕆᑐᔫᒐᔪᒃᐳᖅ ᐊᑭᑐᓪᓗᓂᓗ ᓂᕈᐊᖅᓯᑐᐃᓐᓇᕐᓗᓂ ᐊᑦᑎᒃᑐᒥᒃ THD−ᒥᒃ ᐱᒋᐊᕐᓂᖓᓂ.
