為了使脈沖電鍍電源輸出頻率可調(diào)，電壓可調(diào)，正向脈沖開啟時間寬度和負(fù)向脈沖開啟時間寬度可調(diào)的雙峰雙脈沖。特此提出了一種綠色可靠、節(jié)能高效的新設(shè)計(jì)方案，第一個H橋采用ZVZCS PWM DC/DC變換器對輸入的直流電壓進(jìn)行降壓，變成高頻交流脈沖電壓，然后經(jīng)過高頻變壓器的隔離和耦合，再通過橋式整流濾波得到穩(wěn)定的直流電壓，最后經(jīng)過第二個H橋進(jìn)行切換，得到任意頻率，任意占空比的雙峰雙向脈沖。實(shí)驗(yàn)證明應(yīng)用該方案能降低開關(guān)管的開關(guān)損耗，降低元器件的要求，能將電源的效率提高到90%以上，同時由于此電源具有脈沖換向功能，在電鍍時，大大增加了貴金屬的利用效率。

　　Abstract:

　　This paper studied the pulse electroplating power source .In order to output double-peak and bi-direction pulse whose frequency， voltage ，forward direction pulse opening time width and negative direction pulse opening time width were adjustable， we proposed a new program. This program was green and reliable， energy conservation and highly effective. The first H bridge was ZVZCS PWM DC/DC converter .It turned the inputting DC voltage to high frequency AC pulse voltage. Through the isolation and coupling of high-frequency transformer， bridge-style rectification and filter， the high frequency AC pulse voltage became the stable DC voltage. Finally using the second H bridge， we obtained the double-peak and bi-direction pulse of the random frequency and duty-cycle. The experiment proves this program was able to reduce the loss of the switching transistor and the request of the circuit device and could enhance the power source efficiency to 90% above. Because this power source had the pulse commutation function， when electroplating， increased the precious metal use efficiency greatly.