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СͨñƵ첽綯ͻеɵıƵٴͳϵͳУ綯λܸ·ʱ綯ܴƶ״̬򵱵綯Ӹٵ(ͣ)ʱƵʿͻĻеԣܴ״̬ϵͳĻеܾ綯תɵܣܻͨ͵Ƶֱ·Сʱ״̬ʱƵûȡĴʩⲿм·ĴܵĵѹƶеΪʱⲿͿܶԱƵ𻵣ⲿǾӦÿǿˡ

ͨñƵУõĴʽ֣

(1)ɢֱ·Ϊõġƶ衱У֮Ϊƶ״̬

(2)ʹ֮֮Ϊƶ״̬(ֳƶ״̬)һƶʽֱƶҪ׼ȷͣǰƶIJת

鼮ר̸۹йرƵƶӦãǽЩʱйڡƶ¡죬ṩһ͵ƶСƶתЧʸߵŵ㣬ҲСܺƶԵȾɿԸߵȺô

ܺƶ

ֱ·еƶյܵķʽΪܺƶ

ŵǹ򵥶ԵȾ(ƶȽ)ɱȱЧʵͣرƵƶʱҪĴƶ

һͨñƵУСʱƵ(22kW)ɲԪֻɲ衣ʱƵ(22kW)ɲԪɲˡ

ƶ

ʵƶҪѹͬƵͬơƵDzԴ似ΪͬƵͬλĽ͵Ӷʵƶ

ƶŵУܻϵͳЧʡȱǣ

(1)ֻڲ׷ϵȶѹ(ѹ10%)ſԲֻƶʽΪڷƶʱѹʱ2msܷʧܣ

(2)ڻʱԵгȾ

(3)Ƹӣɱϸߡ

ƶʽ(ݷƶ)

·ԭ

ֲͨIJɿŽ˲·ͨõĵݣʱ·ýӴɿع趼С硢·ɹģIGBT硢翹LC(Լ㼸ɸݱƵڵĹϵͳ)ɡ䲿ɹģIGBTɡ·IGBTʵɡ

1) 綯״̬

CPUĽѹֱ·ѹdʵʱأVT1Ƿ񷢳źţһd뽻ѹӦֱѹֵ(380VAC530VDC)ߵһֵʱCPUضVT3ͨVT1嵼ͨʵֶԵCij̡ʱĵ翹LCѹӶȷCڰȫΧڡCϵĵѹ쵽Σֵ(˵370V)ϵͳԴڷ״̬ܲͨ䲿ֻ͵ֱ·ʱȫ·ãʵܺƶ(ƶ)VT3Ĺض뿪ͨӶʵֵRĶһDzֵġ

(2) 綯綯״̬

CPUϵͳٳʱVT3嵼ͨʹڵ翹Lгһ˲ʱҸĵѹټϵCϵĵѹʵִӵݵֱ·̡CPUͨԵCϵĵѹֱ·ĵѹļ⣬VT3ĿƵԼռձ,ӶƷȷֱ·ѹdֹߡ

ϵͳѵ

(1)翹ѡȡ

(a)ǿǵԣϵͳijֹϣµصλܸɼ䣬ʱһַ״̬

ֱܻͨ·ʹdߣܿʹƵڳ״̬ʱĵܴѡȡ翹߾Ҫͨʱĵ

(b)ڷ·УΪʹ´γǰѾܶĵͷųѡȡͨо(Ƭ)DzܴﵽĿĵģѡƳɵоٿǵĵֵ˴󣬿ɼожز֪ôоʹУ۸Ҳ϶ܵ͡

Ա߽硢·һ翹

(2)ϵѵ

(a)Ƶֱ·Уѹdһ㶼500VDCCѹ400VDCɼ̵ֳĿƾͲƶ(ƶ)ĿƷʽˡڵ翹˲ʱѹΪC˲ʱѹΪc=d-LΪȷݹڰȫΧ(400V)͵ЧĿƵ翹ϵĵѹLѹLȡڵ͵˲ʱ仯ʡ

(b)ڷУ÷ֹCŵĵͨ翹ֱ·ѹߣϵͳֹѹ

ҪӦó

ڱƵƶʽ(ݷƶ)еԽԣЩû豸ص㣬׷Ҫ䱸ϵͳűƵӦؿӦüзչǰ;Ҫڿеĵ(˻װ)б(Ͳ˫Ͳ)ػеҵ֮Ҫװõij϶ѡá


 

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