admin,plaz allowed me to make another thread about my EPS system! Anyone who wanna make such EPS sys, I could be very happy to offer help!
further more, If you think my EPS inverter sys is steadiness & reliability via our technic discussion we could make further cooperation to develope this market field and our technology!
我的EPS性能指標!
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These days I'm crazy busy,I was in many troubles during the last past 2 months, and now It's seems that my nightmare is coming to the end, becouse I've finished the 0.5KW~3KW EPS series models and all destroyer test numbers shows the sys works well.
Some part test result as follow,
Machine model: BD-S3KW(EPS-3KW)
Temp:23℃
Humi:80%
-------------------------------------------------
1,inverter status empty loade test
battery voltage:54V
output voltage:220V
frequency:50HZ
battery current:0.67A
noise:<40dB
------------------------------------------
2 inverter status full loade test
loade:600W(resistance)+1.7kw(fluorescence lights,Λ=0.6)+1.5kw(air compressor)
soft start: OK
full loade concuss test:OK
efficiency:98%
sine wave distortion: bad distortion of course can work
------------------------------------
3 charge test
totale time<20h ,When the battery charged to 95%
Some part test result as follow,
Machine model: BD-S3KW(EPS-3KW)
Temp:23℃
Humi:80%
-------------------------------------------------
1,inverter status empty loade test
battery voltage:54V
output voltage:220V
frequency:50HZ
battery current:0.67A
noise:<40dB
------------------------------------------
2 inverter status full loade test
loade:600W(resistance)+1.7kw(fluorescence lights,Λ=0.6)+1.5kw(air compressor)
soft start: OK
full loade concuss test:OK
efficiency:98%
sine wave distortion: bad distortion of course can work
------------------------------------
3 charge test
totale time<20h ,When the battery charged to 95%
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500) {this.resized=true; this.width=500; this.alt='這是一張縮略圖，點擊可放大。\n按住CTRL，滾動鼠標滾輪可自由縮放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/40/1145854716.jpg');}" onmousewheel="return imgzoom(this);">Inner structure design in 3D which make us easy to control the details!!!!
500) {this.resized=true; this.width=500; this.alt='這是一張縮略圖，點擊可放大。\n按住CTRL，滾動鼠標滾輪可自由縮放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/40/1145861373.jpg');}" onmousewheel="return imgzoom(this);">
500) {this.resized=true; this.width=500; this.alt='這是一張縮略圖，點擊可放大。\n按住CTRL，滾動鼠標滾輪可自由縮放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/40/1145861373.jpg');}" onmousewheel="return imgzoom(this);"> 0
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@zack
Innerstructuredesignin3Dwhichmakeuseasytocontrolthedetails!!!![圖片]500){this.resized=true;this.width=500;this.alt='這是一張縮略圖，點擊可放大。\n按住CTRL，滾動鼠標滾輪可自由縮放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/40/1145861373.jpg');}"onmousewheel="returnimgzoom(this);">
Main inverter sys module struture! And We own the patent right,which make the after service very convenience and easy!!
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500) {this.resized=true; this.width=500; this.alt='這是一張縮略圖，點擊可放大。\n按住CTRL，滾動鼠標滾輪可自由縮放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/40/1145862459.jpg');}" onmousewheel="return imgzoom(this);"> 0
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the finished product appearance!
500) {this.resized=true; this.width=500; this.alt='這是一張縮略圖，點擊可放大。\n按住CTRL，滾動鼠標滾輪可自由縮放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/40/1145862646.jpg');}" onmousewheel="return imgzoom(this);">
500) {this.resized=true; this.width=500; this.alt='這是一張縮略圖，點擊可放大。\n按住CTRL，滾動鼠標滾輪可自由縮放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/40/1145862646.jpg');}" onmousewheel="return imgzoom(this);"> 0
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@zack
thefinishedproductappearance![圖片]500){this.resized=true;this.width=500;this.alt='這是一張縮略圖，點擊可放大。\n按住CTRL，滾動鼠標滾輪可自由縮放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/40/1145862646.jpg');}"onmousewheel="returnimgzoom(this);">
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@zack
都有.目前是按照載波16KHZ頻率設計.xzszrs兄,假如我把SPWM載頻提高到100KHZ可以大幅度降低變壓器體積.你說呢?
我說嘛,變壓器輸入的是兩種信號成分:工頻和載頻,輸出的是工頻,也就是說傳遞的功率信號是工頻,所以它必需按照工頻變壓器的標準設計,另一方面,它又要考濾載頻的輸入損耗,包擴銅損和鐵損,這里忽略銅損,主要考濾鐵損,鐵損隨載頻的升高并不是線性減小的,在5K以下下降曲線較陡,5K-20K下降緩慢,20K以上還會從某個點緩慢增加.所以說提高載頻很難大幅度減小工頻變壓器的體積.提高載頻到一定成度就只能白白地增加開關損耗了.SPWM工頻變壓器是工頻變壓器,但又比工頻變壓器要求高,要減小體積除了要合理選擇載頻外,更要選擇高導磁率高飽和點的鐵芯,
要大幅度減小EPS整機的體積只有做高頻機,徹底地革除工頻主變!
要大幅度減小EPS整機的體積只有做高頻機,徹底地革除工頻主變!
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@xzszrs
我說嘛,變壓器輸入的是兩種信號成分:工頻和載頻,輸出的是工頻,也就是說傳遞的功率信號是工頻,所以它必需按照工頻變壓器的標準設計,另一方面,它又要考濾載頻的輸入損耗,包擴銅損和鐵損,這里忽略銅損,主要考濾鐵損,鐵損隨載頻的升高并不是線性減小的,在5K以下下降曲線較陡,5K-20K下降緩慢,20K以上還會從某個點緩慢增加.所以說提高載頻很難大幅度減小工頻變壓器的體積.提高載頻到一定成度就只能白白地增加開關損耗了.SPWM工頻變壓器是工頻變壓器,但又比工頻變壓器要求高,要減小體積除了要合理選擇載頻外,更要選擇高導磁率高飽和點的鐵芯, 要大幅度減小EPS整機的體積只有做高頻機,徹底地革除工頻主變!
我指的變壓器設計是采用鐵氧體磁心的EE-70的高頻變壓器.
假如任然按照工頻設計顯然會硅剛片飽和,損耗增加,溫度直線上升!
必須按照200KHZ的頻率設計高頻變壓器.
結果主要考慮是否會帶載性能下降.
假如結果只能帶一些容阻性負載,那也沒多大意義.
假如任然按照工頻設計顯然會硅剛片飽和,損耗增加,溫度直線上升!
必須按照200KHZ的頻率設計高頻變壓器.
結果主要考慮是否會帶載性能下降.
假如結果只能帶一些容阻性負載,那也沒多大意義.
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