He aha kahiKapena Snubber?

I nā ʻōnaehana uila a me nā ʻōnaehana uila hou, he kuleana koʻikoʻi nā mea hoʻololi e like me nā transistors, thyristors (SCR), IGBTs, a me nā relays. Eia nō naʻe, kū pinepine kēia mau mea i nā piʻi voltage a me nā loli koke o ke au ma muli o nā ukana inductive, hiki ke alakaʻi i ka hōʻino, nā hana hewa, a me ka hoʻopilikia electromagnetic makemake ʻole ʻia (EMI). ʻO kēia kahinā capacitors snubbere komo mai i ka pāʻani.

Ke hoʻomaopopo nei i nā Capacitors Snubber

A capacitor snubberhe capacitor kūikawā i hoʻohana ʻia i nā kaapuni snubber e pale i nā mea hoʻololi mai nā piʻi voltage a me nā kahe transient. Ma ka hāʻawi ʻana i kahi ala ʻē aʻe no ke au, kōkua nā capacitors snubber i ka hōʻemi ʻana i ke kaumaha ma nā ʻāpana hoʻololi, e hoʻonui ana i ko lākou ola, a me ka hoʻomaikaʻi ʻana i ka hilinaʻi o ke kaapuni.

No ke aha e pono ai nā kaapuni Snubber?

Hoʻohana ʻia nā kaapuni Snubber i nā noi like ʻole, me:

• Nā kaapuni lako mana- e kāohi i nā piʻi voltage.
• Nā kaapuni relay a me contactor– e hōʻemi i ka hoʻokumu ʻana o ke arc ma waena o nā pilina.
• Nā kuapo Semiconductor (SCR, IGBT, GTO, a me nā mea ʻē aʻe)- e kaupalena i ka piʻi ʻana o ke au (dV/dt) a me ka piʻi ʻana o ke au (di/dt), e pale ana i ka hoʻāla wahaheʻe a me ka hāʻule ʻana o ka hāmeʻa.

Pehea e hana ai nā kaapuni Snubber?

ʻO ka maʻamau, aia nā kaapuni Snubber i kahi capacitor a i ʻole kahipūnaewele resistor-capacitor (RC)kau ʻia ma luna o kahi hāmeʻa hoʻololi.

• Ka Hoʻopau ʻana i ke Kuʻi Uila:Ke pio kahi SCR a i ʻole transistor, hoʻopuka kahi ukana inductive i kahi spike voltage kiʻekiʻe. Hoʻopili kahi capacitor snubber i kēia ikehu, e pale ana i ke kaumaha voltage nui.
• Mana dV/dt:Hoʻolohi ka capacitor i ka piʻi ʻana o ke voltage ma ke kuapo, e pale ana i ka hoʻā ʻana i manaʻo ʻole ʻia (hoʻāla wahaheʻe) i loko o nā thyristors a me nā semiconductors ʻē aʻe.
• Mana di/dt:ʻO ka hoʻohui ʻana i kahi resistor ma ke ʻano he moʻo me ka capacitor e kaupalena i ke au komo ke huli ka kuapo, e pale ana i ke kaumaha nui ma ka ʻāpana.

Nā ʻano koʻikoʻi o nā Snubber Capacitors

Ua hoʻolālā ʻia nā capacitors Snubber e lawelawe i nā au alapine kiʻekiʻe a me nā pulse hou. ʻO kā lākou mau ʻano koʻikoʻi:

• ʻO ke alapine hana i ʻae ʻia kiʻekiʻe (100 kHz a ʻoi aku paha).
• Haʻahaʻa ka hoʻomehana ponoʻī a me ka pohō haʻahaʻa.
• Ke kū'ē haʻahaʻa o ka moʻo like (ESR) no ka omo pono ʻana i ka ikehu.
• Mana kiʻekiʻe a me ke au no ka lawelawe ʻana i nā ukana transient.

Nā ʻano o nā Capacitors Snubber

Loaʻa nā capacitors Snubber i nā ʻano like ʻole e pili ana i nā pae mana a me nā koi noi:

• Nā Capacitors Keramika- Kūpono no nā noi mana haʻahaʻa.
• Nā Capacitors Kiʻiʻoniʻoni Palakiko- Hoʻohana ʻia i nā kaapuni mana kiʻekiʻe, me nā ʻōnaehana kaʻa uila (EV) a me nā kaohi motika.
• Nā Capacitors Polypropylene Metalized (MPP)– Hoʻolālā ʻia no nā noi alapine kiʻekiʻe, au kiʻekiʻe me ka inductance haʻahaʻa.

Ke koho ʻana i ka Capacitor Snubber kūpono

ʻO ke koho ʻana o kahi capacitor snubber e pili ana i nā kumu e like me:

• Ka waiwai o ka capacitance:ʻO ka maʻamau, mai0.1µF a i 10µF, ma muli o ka hāmeʻa hoʻololi a me ka inductance ukana.
• Ka helu uila:Pono e ʻoi aku ke kiʻekiʻe ma mua o ke ana wela kiʻekiʻe o ke kaapuni.
• ESR a me ka helu o kēia manawa:Pono e haʻahaʻa e lawelawe i nā au ripple me ka ʻole o ka hoʻomehana nui.

Ma hea kahi e hoʻohana ʻia ai nā Snubber Capacitors?

Loaʻa nā capacitors Snubber ma nā ʻoihana like ʻole a me nā noi, e like me:

• Nā ʻāpana lako mana (PSU)
• Nā kaʻa uila (EV) a me nā kaapuni hoʻokele motika
• Nā ʻōnaehana hana hoʻokele ʻoihana
• Nā ʻōnaehana ikehu hou (nā inverters solar, nā turbine makani)

Hopena

He kuleana koʻikoʻi ko nā capacitors Snubber i ka pale ʻana i nā mea hoʻololi mai nā piʻi voltage, ka kaohi ʻana i nā kahe transient, a me ka hoʻomaikaʻi ʻana i ka hana holoʻokoʻa o ke kaapuni. I ka hoʻomau ʻana o ka holomua o nā mea uila mana, e ulu mau ana ke koi no nā capacitors snubber pono a hilinaʻi hoʻi. Inā paha ma nā lako mana, ka automation ʻoihana, a i ʻole nā ​​​​kaʻa uila, kōkua kēia mau capacitors i ka hōʻoia ʻana i ka hana maʻalahi a paʻa i nā kaapuni mana kiʻekiʻe.