浅谈Microchip 1800W空调控制板RS1－B－0039参考设计

microchip公司的RS1-B-0039是1800W空调控制板参考设计,可以迅速评估和开发多种双马达或单马达控制应用.目标是控制无刷DC(BLDC)马达和无传感器工作的永磁同步马达.设计系统具有用于功率因素修正的前端交叉升压转换器. 升压转换器还有助于在整个输入范围内调整DC总线.两个马达负载能同时控制.三相IPM逆变器能驱动大功率马达和单独的IGBT分立栅极驱动器电路,用来驱动ODU.

参考设计采用不同的控制技术驱动BLDC,PMSM或ACIM马达.它还具有PFC电路以提高轻负载时的效率性能.输入电压160V-265V时开发板最大输出功率为1.8KW.演示板支持1.34KW压缩机和高达120W ODU冷凝器风扇.其它特性包括传感器用来温度检测,步进马达用来控制EEV以及用于交流负载的继电器.参考设计还可以用来其它大功率应用如HVAC,纺织机器,水泵,工业马达等.本文介绍了空调控制板RS1-B-0039参考设计主要特性和指标,框图,电路图,材料清单和PCB设计图.

 

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.

 

图1.空调控制板框图

 

图2.空调控制板底视图

 

图3.空调控制板顶视图

空调控制板RS1-B-0039主要指标:

 

图4. 空调控制板RS1-B-0039电路图(1):输入AC和PFC级

 

图5. 空调控制板RS1-B-0039电路图(2):辅助电源

 

图6. 空调控制板RS1-B-0039电路图(3):逆变器模块功率级

 

图7. 空调控制板RS1-B-0039电路图(4):ODU逆变器电源级

 

图8. 空调控制板RS1-B-0039电路图(5):压缩机和ODU反馈级

 

图9. 空调控制板RS1-B-0039电路图(6):数字MCU级

 

图10. 空调控制板RS1-B-0039电路图(7):应用级

 

图11. 空调控制板RS1-B-0039电路图(8):通信级

 

图12. 空调控制板RS1-B-0039电路图(9):压缩机和ODU-OCP和OVP级

 

图13. 空调控制板RS1-B-0039电路图(10):VAC检测和VDC检测级

空调控制板RS1-B-0039材料清单:

 

变压器参数:

 

图14. 空调控制板RS1-B-0039 PCB设计图:顶层

 

图15. 空调控制板RS1-B-0039 PCB设计图:底层

编辑：jq