microchip公司的RS1-B-0039是1800W空調控制板參考設計,可以迅速評估和開發(fā)多種雙馬達或單馬達控制應用.目標是控制無刷DC(BLDC)馬達和無傳感器工作的永磁同步馬達.設計系統(tǒng)具有用于功率因素修正的前端交叉升壓轉換器. 升壓轉換器還有助于在整個輸入范圍內調整DC總線.兩個馬達負載能同時控制.三相IPM逆變器能驅動大功率馬達和單獨的IGBT分立柵極驅動器電路,用來驅動ODU.

參考設計采用不同的控制技術驅動BLDC,PMSM或ACIM馬達.它還具有PFC電路以提高輕負載時的效率性能.輸入電壓160V-265V時開發(fā)板最大輸出功率為1.8KW.演示板支持1.34KW壓縮機和高達120W ODU冷凝器風扇.其它特性包括傳感器用來溫度檢測,步進馬達用來控制EEV以及用于交流負載的繼電器.參考設計還可以用來其它大功率應用如HVAC,紡織機器,水泵,工業(yè)馬達等.本文介紹了空調控制板RS1-B-0039參考設計主要特性和指標,框圖,電路圖,材料清單和PCB設計圖.

The Development Board is intended to aid the user in the rapid evaluation and development of a wide variety of dual or single motor control applications. This development system is targeted to control Brushless DC (BLDC) motors, Permanent Magnet Syn-chronous Motors (PMSM) in sensor-less operation.

The system has Front end Interleaved Boost convertor for the Power factor correction. The boost convertor also helps to regu-late the DC Bus over a wide input range. Two motor loads can be controlled simultaneously with the demo board. three-phase IPM inverter that can drive high powered motor and separate discrete gate driver’s & IGBT circuitry intended to drive ODU. The circuit drives a BLDC, PMSM or ACIM motor using different control techniques independent of additional hardware. It also has Power Factor Correction (PFC) circuitry in order to provide efficient performance at light loads.

This development board is designed to target the Air-conditioner application primarily where control of Compressor & ODU is possible simultaneously along with power factor control Stage to meet the regulations. The board is intended for approximately 1.8KW output when running from a 160V to 265V single-phase input voltage range. The Demo board supports 1.34KW compressor and up to 120W ODU Condenser Fan. Additional Features like Sensors for temperature monitoring, Stepper motor control for EEV, and relays for ac loads have been implemented in the demo board to support Air-conditioner design requirements.

The demo board can also be considered for other high-power applications like HVAC, Textile machines, water pumps, indus-trial motors with slight modifications.

圖1.空調控制板框圖

圖2.空調控制板底視圖

圖3.空調控制板頂視圖

空調控制板RS1-B-0039主要指標:

圖4. 空調控制板RS1-B-0039電路圖(1):輸入AC和PFC級

圖5. 空調控制板RS1-B-0039電路圖(2):輔助電源

圖6. 空調控制板RS1-B-0039電路圖(3):逆變器模塊功率級

圖7. 空調控制板RS1-B-0039電路圖(4):ODU逆變器電源級

圖8. 空調控制板RS1-B-0039電路圖(5):壓縮機和ODU反饋級

圖9. 空調控制板RS1-B-0039電路圖(6):數(shù)字MCU級

圖10. 空調控制板RS1-B-0039電路圖(7):應用級

圖11. 空調控制板RS1-B-0039電路圖(8):通信級

圖12. 空調控制板RS1-B-0039電路圖(9):壓縮機和ODU-OCP和OVP級

圖13. 空調控制板RS1-B-0039電路圖(10):VAC檢測和VDC檢測級

空調控制板RS1-B-0039材料清單:

變壓器參數(shù):

圖14. 空調控制板RS1-B-0039 PCB設計圖:頂層

圖15. 空調控制板RS1-B-0039 PCB設計圖:底層

編輯：jq