BMXERT1604T
在單相電機(jī)中,通常使用輔助起動(dòng)裝置來幫助電機(jī)啟動(dòng)。例如單相感應(yīng)電動(dòng)機(jī)通常配備了啟動(dòng)電容器,啟動(dòng)時(shí)通過啟動(dòng)電容器改變電路中的電流相位差,從而使電機(jī)啟動(dòng)。需要注意的是,單相電機(jī)由于只有單個(gè)相位供電,因此其轉(zhuǎn)矩產(chǎn)生的起伏較大,運(yùn)行不如三相電機(jī)平穩(wěn),且功率相對(duì)較小,通常用于小功率和輕載情況下。
單相電機(jī)具有以下幾個(gè)特點(diǎn):
結(jié)構(gòu)簡(jiǎn)單、成本低廉:?jiǎn)蜗嚯姍C(jī)由于只需要單相電源供電,其結(jié)構(gòu)相對(duì)簡(jiǎn)單,制造成本相對(duì)較低。
使用方便:?jiǎn)蜗嚯姍C(jī)可以通過普通家庭用電進(jìn)行供電,使用方便。
需要輔助裝置啟動(dòng):由于單相電機(jī)只有一個(gè)相位供電,因此啟動(dòng)時(shí)需要使用輔助裝置(如啟動(dòng)電容器)來改變電路中的相位差,幫助電機(jī)啟動(dòng)。
轉(zhuǎn)矩波動(dòng)大:?jiǎn)蜗嚯姍C(jī)由于只有單個(gè)相位供電,因此其轉(zhuǎn)矩產(chǎn)生的起伏較大,運(yùn)行不如三相電機(jī)平穩(wěn)。
適用于小功率和輕載:?jiǎn)蜗嚯姍C(jī)功率相對(duì)較小,適用于小功率和輕載情況下的應(yīng)用,如家用電器、輕工業(yè)設(shè)備等。
與三相電機(jī)相比,單相電機(jī)具有結(jié)構(gòu)簡(jiǎn)單、使用方便、成本低廉等優(yōu)點(diǎn),廣泛應(yīng)用于家庭、商業(yè)和輕工業(yè)等領(lǐng)域,例如水泵、風(fēng)扇、壓縮機(jī)、機(jī)床等。需要注意的是,單相電機(jī)由于只有單個(gè)相位供電,因此其轉(zhuǎn)矩產(chǎn)生的起伏較大,運(yùn)行不如三相電機(jī)平穩(wěn),且功率相對(duì)較小,通常用于小功率和輕載情況下。

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