JZ-22020B JZ11020C高频开关电源模块
JZ-22020B型高频开关电源模块采用了先进的无源PFC技术和脉宽调制软开关技术的控制技术（PWM），使得模块效率提高，谐波减小。模块采用交流三相三线制380VAC平衡输入方式，不存在中线电流损耗。模块交流输入经过尖峰抑制电路和EMI吸收电路，经全桥整流滤波电路将三相交流电压整流为脉动的直流电压，由高频脉宽调制变换器变换将脉动的直流电压成高频方波电压，再由输出整流滤波电路，得到稳定的输出电压和电流，在电网电压和负载发生变化时反馈调整电路控制脉宽调制电路，使得输出电压和电流保持稳定。
JZ-22020Bhigh-frequency switch power-supply module is produced with theadvanced techniques of PFC and PWM. Its efficiency is enhanced andits harmonic is minished. The moduleinputs current with the equilibrium ACternary-phase 3-line380VAC so that there is no wastage inmiddle line. It input current throughpeak-restrictingcircuitry andEMI absorber circuit, and full bridge rectifier-filtercircuit whichchange the ternary-phase ACvoltage into pulsed DCvoltage, then trough high-frequency pulsed modulatorwhich change the pulsed DCvoltage into high-frequency quadrate-wavevoltage. At last, though output rectifier-filtercircuit,the stabilized voltage and current is outputted. Even when theelectric network’ voltage and load change, the voltageand current can keep stable because the feedback-modulatingcircuit controlpulse-modulating circuit.
三、技术指标 TechniqueIndexes
1. 工作环境温度： -10～45℃
Surroundingtemperature: -10～45℃
2. 工作环境湿度： ≤90％PH无结露
Surroundinghumidity: ≤90％PHWithout dew
3. 工作环境高度： ≤2000m海拔
Surroundingheight: ≤2000mAbovesea level
4. 交流输入电压: 380V±20％
ACinput voltage: 380V±20％
5. 交流输入频率: 50/60±2％
ACinput frequency: 50/60±2％
6. 整定输出电压: 243VDC
Rectifiedoutput voltage: 243VDC
7. 输出电压范围: 180～300VDC
Outputvoltage range: 180～300VDC
8. 整定输出电流: 20ADC
Rectifiedoutput current: 20ADC
9. 输出电流范围: 2～20ADC连续可调
Outputcurrent range: 2～20ADCContinuous adjustable
10. 稳压精度: ≤±0.2％
Precisionof stabilizing voltage ≤±0.2％
11. 稳流精度: ≤±0.2％
Precisionof stabilizing current: ≤±0.2％
12. 纹波系数: ≤±0.2％
Ripplecoefficient: ≤±0.2％
13. 并机不均流度： ≤±5％(单只模块电流大于2A)
Disequilibrium degreeof parallel-connected modules:
≤±5％(Singlemodule’scurrent ＞2A)
14. 输入欠压保护： 304±2VAC
Inputvoltage belowlimit protection: 304±2VAC
15. 输入过压保护： 456±2VAC
Inputvoltage overlimit protection: 456±2VAC
16. 输出过压保护： 300±2V
Outputvoltage overlimit protection: 300±2V
17. 输出限流保护： 20±0.2A
Outputcurrent limit protection: 20±0.2A
18. 模块过热保护： 85±5℃
Moduleoverheat protection: 85±5℃
19. 效率： 90％
Efficiency: 90％
20. 冷却方式： 温控风冷
Coolingway: Temperature-controlledwind cooling
四、模块特点 ModuleCharacteristics
1. 交流输入范围宽：380V±20％
Wide range of input AC:380V±20％
2. 先进的无源PFC技术:更好地抑制高次谐波，功率因数可达0.95。Advanced PFC technique:high-frequency harmonic can be restricted better, and power factorcan be 0.95
3. 智能温控风冷方式：增加风机的使用寿命,使模块运行更可靠。
Intelligent temperature-controlledwind cooling: the usage life of fan is prolonged, which makesmodule running more safely.
4. 先进的无级调流技术：可以根据负载电流或电池容量，无级调节限流值。
Advanced stepless modulatingtechnique: it can steplessly modulate current limit valuesaccording to load current or battery’s capacitance.
5. 先进的自主均流电路：采用先进的专用均流芯片，在小电流下仍达到很好的均流效果。
Advancedself-controlled currentdividing circuit: with advancedcurrentdividing chip, the current can be divided welleven when it is very low.
6. 多级保护电路：输入级采用双臂逐个脉宽保护电路，输出限流和过电流双重保护，确保整个系统在异常情况下可靠保护。
Multi-protectioncircuit: output steps are composed ofdouble-arm gradualpulse protection circuit,and with the double-protection of output current limit andovercurrent, it can be ensured that the whole system is protectedwell under abnormal conditions.
7. 独立工作能力：模块在脱离监控的情况下，可以独立或并机正常工作。
Independent running ability: modulescan run normally by itself or connected to other machines inparallel without being monitored.
五、模块结构和功能 ModuleConfiguration AndFunctions
1．1 前面板说明 Front Panelinstruction
1. 前面板如图一。
Front panel: seeFig.1
2. 输入缺相指示灯（红色）：当模块输入缺相时，此指示灯被点亮，模块保护，无输出。当输入正常时，此指示灯熄灭，模块输出正常。
Indicatorlightof AC loss (red): it is lightened when moduledoes not input with all phase, and it does not output to protectthe module. The light goes out when module inputs normally, and italso outputs normally.
3. 输入过压指示灯（红色）：当模块输入电压高于465±2VAC时，此指示灯被点亮，模块保护，无输出。当输入正常时，此指示灯熄灭，模块输出正常。
Indicatorlightof V-In Over-L (red): it is lightened when the input voltage ismore than 465±2VAC,and the module does not output to protect itself. The light goesout when module inputs normally, and it also outputsnormally.
