A qa'ida ta PWM kwaikwaiyo (PWM) da aka sani na lokaci mai tsawo, amma amfani a daban-daban na makirci da shi ya zama kwanan nan. Yana da muhimmanci ga da yawa na'urorin amfani a fannoni daban daban: uninterruptible samar da wutar lantarki mai sãɓãnin, mita converters, irin ƙarfin lantarki tsari, yanzu ko gudun awon mita converters, da dai sauransu Wannan abu ne da tabbatar a cikin mota masana'antu da kuma a samar a matsayin memba na iko da aiki na biyu da sabis da kuma iko Motors. A PWM kula ya yi aiki da kyau idan aiki a cikin daban-daban haihuwarka.
Bari mu bincika wasu m misalin da zai nuna yadda za a daidaita cikin motor gudu ta lantarki, da suka hada da PWM kula. Da a ce kana bukatar canza motor gudu a cikin mota ta ciki dumama tsarin. Isasshen amfani kyautata, ko ba haka ba? Musamman a cikin kashe-kakar, a lokacin da wanda yake so ya tsara da ciki zafin jiki a hankali. DC motor shigar a cikin wannan tsarin, ya sa ya yiwu don canja lokacinta, amma shi wajibi ne zuwa tasiri ta EMF. Da taimakon zamani lantarki abubuwa da cewa kallafã sauki yi. A saboda wannan dalili, da ikon samar da kewaye na engine jũya ikon su ɗauko. Kulawa, kana gane shi, PWM gudun iko. Tare da shi, za ka iya canza motor gudu a cikin wani m kewayon.
Ta yaya PWM iko kewaye a cikin AC? A wannan yanayin, a ɗan daban-daban iko kewaye, amma aiki da manufa kasance iri guda. Kamar yadda wani misali, ka yi la'akari da aiki na mita Converter. Irin na'urorin da ake amfani da ko'ina a masana'antu don gudãnar engine gudun. Don fara da uku-lokaci ƙarfin lantarki da aka gãfarta via wata gada Larionov kuma jera smoothed. Kuma kawai sai ciyar da iko bipolar taro ko module-tushen filin-sakamako transistors. Controls ne suka ƙarfin lantarki PWM kula, tattara a kan tushen da microcontroller. Ya haifar da iko hatsaisai, da nisa da mita zama dole ga samuwar wani musamman motor gudu.
Abin baƙin ciki, ban da kyau yi a aikace-aikace inda PWM iko ne kullum bayyana da karfi tsoma baki a cikin ikon kewaye. Wannan shi ne saboda kasancewar inductance a windings na lantarki Motors da kuma layin da kanta. Fafitikar da wannan iri-iri schematics: saitin wani iko da karuwa a AC haihuwarka ko ba free-wheeling diode a layi daya da mota a DC samar da wutar lantarki.
Irin wannan haihuwarka bambanta isasshe high AMINCI a aiki da su m, a filin wasa na daban-daban da wutar lantarki iko. Su ne m isa da kyau gudanar. Recent gyare-gyare na wadannan na'urorin da ake amfani da ko'ina a samar.