Mgbe ebipụchara ọkụ eletrik, moto ahụ ka kwesịrị ịgbagharị ruo oge ụfọdụ tupu ya akwụsị n'ihi inertia nke ya. N'ọnọdụ ọrụ n'ezie, ụfọdụ ibu chọrọ ka moto kwụsị ngwa ngwa, nke chọrọ njikwa breeki nke moto ahụ.Ihe a na-akpọ breeki bụ inye moto ahụ ike nke na-emegide ntụzịaka nke ntụgharị ka ọ kwụsị ngwa ngwa.A na-enwekarị ụdị ụzọ breeki abụọ: breeki igwe na breeki eletrik.
breeki igwe na-eji ihe arụrụ arụ mechaa breeki. Ọtụtụ n'ime ha na-eji breeki electromagnetic, bụ nke na-eji nrụgide nke isi iyi na-ebute site na ịpị breeki pads (akpụkpọ ụkwụ breeki) iji jiri wiil breeki na-akpata esemokwu.breeki igwe nwere ntụkwasị obi dị elu, mana ọ ga-emepụta ịma jijiji mgbe a na-agba brek, na ike breeki dị ntakịrị. A na-ejikarị ya eme ihe n'ọnọdụ ndị nwere obere inertia na torque.
breeki eletrik na-ebute ike eletrik nke dị n'akụkụ steering n'oge usoro nkwụsị moto, nke na-arụ ọrụ dị ka ike breeki iji kwụsị moto ahụ.Ụzọ breeki eletrik na-agụnye breeki azụ, breeki dị ike, na breeki na-emegharị ahụ.N'ime ha, a na-ejikarị breeki njikọ azụ eme ihe maka braking mberede nke obere voltaji na obere ike; breeki nrụpụta nwere ihe pụrụ iche chọrọ maka ndị ntụgharị ugboro ugboro. N'ozuzu, a na-eji moto obere na obere ike mee ihe maka breeki mberede. Ịrụ ọrụ breeki dị mma, mana ọnụ ahịa ya dị oke elu, na grid ọkụ ga-enwe ike ịnakwere ya. Nzaghachi ike na-eme ka ọ ghara ikwe omume ịgbaji moto ndị nwere ike dị elu.
Dị ka ọnọdụ nke braking resistor si dị, enwere ike ikewa breeki na-eri ike na braking DC na-eri ike na braking AC ume. Ekwesịrị ijikọ resistor breeking na-eri DC ike n'akụkụ DC nke inverter ma ọ dabara na ndị inverters nwere ụgbọ ala DC nkịtị. N'okwu a, ihe mgbochi braking na-eri AC na-ejikọta ya na moto dị n'akụkụ AC, nke nwere oke ngwa ngwa.
A na-ahazi resistor braking n'akụkụ moto iji rie ike nke moto iji nweta nkwụsị ngwa ngwa nke moto ahụ. A na-ahazi ihe nbibi sekit ikuku dị elu n'etiti braking resistor na moto. N'okpuru ọnọdụ nkịtị, ikuku sekit ikuku dị na steeti mepere emepe ma moto ahụ dị mma. Usoro ọsọ ọsọ ma ọ bụ ọrụ ugboro ugboro, n'oge ihe mberede, a na-emeghe oghere sekit nke dị n'etiti moto na ihe ntụgharị ugboro ma ọ bụ grid ike, na-emechi ihe na-agbaji sekit n'etiti moto na braking resistor, na ike oriri. A na-enweta breeki nke moto site na braking resistor. , si otú a na-enweta mmetụta nke ụgbọala ngwa ngwa.Eserese otu ahịrị sistemu bụ nke a:
Eserese Brake Otu Ahịrị Mberede
Na ọnọdụ breeki ihe mberede, yana dịka oge ntughari chọrọ, a na-edozi ihe mkpali ugbu a iji mezie stator current na braking torque nke moto synchronous, si otú a na-enweta njikwa ndakpọ ngwa ngwa na njikwa nke moto.
N'ime ọrụ nyocha ule, ebe ọ bụ na ụlọ ọrụ mmepụta ihe anaghị ekwe ka nzaghachi ike, iji hụ na usoro ike ahụ nwere ike ịkwụsị n'enweghị nsogbu n'ime oge a kapịrị ọnụ (ihe na-erughị 300 sekọnd) na mberede, usoro nkwụsị mberede nke dabeere na ike resistor. Haziri breeki oriri.
Usoro draịva eletrik na-agụnye ihe ntụgharị ọkụ eletrik dị elu, moto dị elu nke nwere ike okpukpu abụọ na-eku ume, ihe na-akpali akpali, 2 set nke braking resistors, na 4 elu-voltage circuit breaker cabinet. A na-eji ihe inverter dị elu mee ihe iji ghọta mgbanwe ugboro ugboro mmalite na iwu ọsọ nke moto voltaji dị elu. A na-eji ngwaọrụ njikwa na ihe mkpali na-enye moto excitation ugbu a, a na-ejikwa igbe nchekwa sekit nke na-agbaji voltaji anọ iji ghọta mgbanwe mgbanwe mgbanwe ọsọ ọsọ ọsọ na breeki nke moto.
N'oge breeki mberede, a na-emepe kabinet dị elu AH15 na AH25, na-emechi igbe ọkụ eletrik AH13 na AH23, na braking resistor na-amalite ịrụ ọrụ. Eserese eserese nke sistemu braking bụ nke a:
Eserese sistemu breeki
The teknuzu paramita nke ọ bụla frasi resistor (R1A, R1B, R1C, R2A, R2B, R2C,) bụ ndị a:
- Ike breeki (kachasị): 25MJ;
- Nguzogide oyi: 290Ω± 5%;
- Oke ọkụ: 6.374kV;
- Enyere ike: 140kW;
- Ibu ibu: 150%, 60S;
- Nke kachasị elu: 8kV;
- Usoro jụrụ oyi: eke eke;
- Oge ọrụ: 300S.
Nkà na ụzụ a na-eji breeki eletrik achọpụta breeki nke moto ndị nwere ike dị elu. Ọ na-emetụta mmeghachi omume armature nke moto synchronous na ụkpụrụ nke ike oriri breeki na breeki moto.
N'oge usoro breeki dum, enwere ike ịchịkwa torque braking site na ịchịkwa mkpali ugbu a. breeki eletrik nwere njirimara ndị a:
- Ọ nwere ike inye nnukwu breeki nke chọrọ maka breeki ngwa ngwa nke unit ahụ wee nweta mmetụta breeki dị elu;
- Oge nkwụsịtụ dị mkpụmkpụ ma nwee ike ịme breeki n'oge usoro ahụ dum;
- N'oge a na-eme breeki, ọ dịghị usoro dị ka breeki na mgbanaka breeki na-eme ka usoro ihe eji eme ihe na-eme ka ọ bụrụ ihe na-eme ka ọ dị elu, na-ebute ntụkwasị obi dị elu;
- Sistemụ breeki mberede nwere ike ịrụ ọrụ naanị ya dị ka sistemu nọọrọ onwe ya, ma ọ bụ enwere ike itinye ya na sistemu njikwa ndị ọzọ dị ka sistemụ subsystem, yana ntinye usoro na-agbanwe agbanwe.
Oge nzipu: Mar-14-2024