Sɛ yɛbɛte nuances a ɛwɔ mu resistance ne impedance ase a, ɛho hia sɛ yehu sɛ impedance fa AC (alternating current) ho, bere a emu resistance ne DC (direct current) wɔ abusuabɔ kɛse. Ɛmfa ho sɛ ɛsono wɔn nsɛm a ɛfa ho no, wɔn akontaabu di ɔkwan koro no ara akyi, R=V/I, a R yɛ emu resistance anaa impedance, V yɛ voltage, na I yɛ current.
Mfinimfini Nneɛma a Ɛko Tia: Akwanside a Ɛmma Ɛlektrɔn Nsen
Mfinimfini ahoɔden a ɛko tia no fi ɛlɛtrɔnik ne conductor no ionic lattice a ɛbɔ, na ɛdan anyinam ahoɔden ahoɔden ma ɛbɛyɛ ɔhyew. Fa emu ahoɔden a ɛko tia no sɛ akasakasa bi a esiw ɛlɛtrɔnik kwan. Wɔ tebea horow a current a ɛsesa fa resistive element mu no, ɛma voltage no kɔ fam. Saa nsuo a ɛtɔ yi kɔ so ne mprempren no hyia, na ɛkyerɛ abusuabɔ tẽẽ a ɛda mprempren nsuo a ɛsen ne emu ahoɔden a wɔhyia no ntam.
Impedance: Adwene a Ɛtrɛw a Ɛka Mfinimfini Resistance Ho
Impedance gyina hɔ ma asɛmfua a ɛkɔ akyiri a ɛka ɔsɔretia ahorow nyinaa a ɛsɔre tia ɛlɛtrɔnik nsu a ɛsen no ho asɛm. Ɛnyɛ emu mu ahoɔden a ɛko tia nko na ɛka eyi ho, na mmom nea ɛka ho nso. Ɛyɛ adwene a ɛwɔ baabiara a wohu wɔ amansin ne nneɛma a ɛwom nyinaa mu.
Ɛho hia sɛ wohu nsonsonoe a ɛda reactance ne impedance ntam. Reactance titiriw kyerɛ ɔsɔretia a inductors ne capacitors, nneɛma a ɛsono wɔ battery ahorow ahorow mu de ma AC current. Saa nsakrae yi da adi wɔ mfonini ahorow ne anyinam ahoɔden gyinapɛn ahorow a ɛyɛ batere biara su mu.
Sɛ yɛbɛma impedance ayɛ demystify a, yebetumi adan akɔ Randles model no so. Saa nhwɛsoɔ yi a wɔayɛ ho mfonini wɔ Mfonini 1 mu no ka R1, R2, bom ka C. Titiriw no, R1 gyina hɔ ma emu ahoɔden a ɛko tia, bere a R2 ne charge transfer resistance no hyia. Bio nso, C kyerɛ capacitor a ɛwɔ ntoatoaso abien. Nea ɛda nsow ne sɛ, Randles mfonini no taa yi inductive reactance fi mu, efisɛ nkɛntɛnso a enya wɔ battery adwumayɛ so, titiriw wɔ frequency a ɛba fam mu no sua koraa.
Mfonini 1: Randles nhwɛsode a ɛkyerɛ lead acid battery
Ntotoe a ɛfa Internal Resistance ne Impedance ho
Sɛnea ɛbɛyɛ na emu ada hɔ no, wɔakyerɛkyerɛ ntotoho a ɛkɔ akyiri a ɛfa emu resistance ne impedance ho wɔ ase ha.
Afã a Ɛfa Electrical Property Ho |
Nneɛma a Ɛko Tia Nneɛma a Ɛwɔ Mu (R) . |
Impedance (Z) 1. Ɔde ne nsa kyerɛɛ ne so. |
Circuit Dwumadie a Wɔde Di Dwuma |
Wɔde di dwuma titiriw wɔ amansin a ɛyɛ adwuma wɔ direct current (DC) so. |
Wɔde di dwuma titiriw wɔ amansin a wɔayɛ ama alternating current (AC) mu. |
Ɔmansin a Ɛwɔ Hɔ |
Wotumi hu wɔ alternating current (AC) ne direct current (DC) circuits nyinaa mu. |
Ɛyɛ alternating current (AC) circuits nkutoo, a enni DC mu. |
Abɔseɛ |
Efi nneɛma a esiw anyinam ahoɔden a ɛsen no kwan mu. |
Ɛsɔre fi nneɛma a wɔaka abom a ɛko tia anyinam ahoɔden no na ɛyɛ n’ade. |
Nkontaabu mu Nkyerɛkyerɛmu |
Wɔde akontaahyɛde ankasa a ɛyɛ pintinn na ɛkyerɛ, sɛ nhwɛso no, 5.3 ohms. |
Wɔnam akontaahyɛde ankasa ne nneɛma a wɔde wɔn adwene bu so na ɛda adi, a wɔde ‘R + ik’ na ɛyɛ nhwɛso. |
Mpɛn dodow a Wɔde Di Dwuma |
Ne bo kɔ so yɛ nea ɛkɔ so daa ɛmfa ho mpɛn dodow a DC current no ba. |
Ne bo no sakra bere a AC current no mpɛn dodow a ɛsakra no. |
Phase Su a Ɛwɔ Hɔ |
Ɛnkyerɛ phase angle anaa magnitude su biara. |
Nea ɛda nsow ne sɛ ɛyɛ phase angle a ɛyɛ pintinn ne ne kɛse. |
Suban wɔ Electromagnetic Field mu |
Ɛda tumi a ɛyera nkutoo adi bere a ɛda anyinam ahoɔden a ɛwɔ anyinam ahoɔden mu no adi no. |
Kyerɛ tumi a wɔsɛe no ne tumi a wɔde sie ahoɔden wɔ anyinam ahoɔden mu nyinaa. |
Pɛpɛɛpɛ wɔ Battery Mu Resistance Nsusuwii
Sɛ́ ano aduruyɛfo a ne ho akokwaw wɔ batere a wɔde sie a wɔhwɛ so na wɔhwɛ so no, . DFUN a wosi batere mu ahoɔden a ɛko tia susuw so dua no ne nnwumayɛbea nneyɛe a wɔde asi hɔ no hyia, na wonya nhyɛso fi mfiri a wogye tom kɛse te sɛ Fluke anaa Hioki mu. Yɛde akwan a ɛte sɛ saa mfiri yi di dwuma, a wonim no sɛ ɛyɛ pɛpɛɛpɛ na adetɔfo gye tom wɔ baabiara, yɛdi gyinapɛn te sɛ IEE1491-2012 ne IEE1188 so.
IEE1491-2012 kyerɛ yɛn kwan wɔ nteaseɛ mu wɔ emu resistance sɛ dynamic parameter, a ɛhia sɛ wɔkɔ so di akyi de susu deviations firi mfitiaseɛ. Saa bere yi mu no, IEE1188 gyinapɛn no de ahwehwɛde bi si hɔ ma adeyɛ, na ɛtu fo sɛ sɛ emu ahoɔden a ɛko tia no boro gyinapɛn line no 20% a, ɛsɛ sɛ wosusuw ho sɛ wɔbɛsesa battery no anaasɛ wɔde bɛhyɛ deep cycle ne recharge ase.
Sɛ yefi nnyinasosɛm ahorow yi so a, yɛn kwan a yɛfa so susuw emu ahoɔden a ɛko tia no hwehwɛ sɛ yɛde batere no hyɛ frequency ne current a wɔahyɛ da ahyɛ da ase, na yɛde voltage sampling di akyi. Adeyɛ a edi hɔ, a nea ɛka ho ne siesie ne nea wɔde yiyi mu denam amplifier circuit a ɛyɛ adwuma so no ma wosusuw emu ahoɔden a ɛko tia no pɛpɛɛpɛ. Ɛyɛ nwonwa sɛ ɛyɛ ntɛmntɛm, saa kwan yi taa ba awiei wɔ milisekɔn 100 mu, na ɛhoahoa ne ho sɛ ɛyɛ pɛpɛɛpɛ a ɛfata nkamfo a ɛyɛ 1% kosi 2%.
Sɛ yɛde rewie a, pɛpɛɛpɛyɛ wɔ emu ahoɔden a ɛko tia susuw mu no hwɛ hu sɛ wɔhwɛ batere ahorow so yiye, na ɛboa ma ɛtra hɔ kyɛ. Saa akwankyerɛ yi botae ne sɛ ɛbɛboa wɔn a ebia wobehu sɛ ɛyɛ den sɛ wobehu nsonsonoe a ɛda emu ahoɔden a ɛko tia ne nea ɛko tia ntam, na ama ntease nketenkete a wobenya wɔ anyinam ahoɔden su ahorow yi ho no ayɛ mmerɛw. Sɛ wopɛ nsɛm ne nteaseɛ a ɛkɔ akyiri a, wobɛtumi ahwehwɛ nneɛma foforɔ mu afiri DFUN Tech.
