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CY2000-type phase selector switch on the control system application


12kV (35kv) 31.5kA really narrow breaker restructuring orange power system to the 220V AC input stream and stored in the skeleton boost high-voltage capacitors lI}, once the controller receives the selection phase of a 23 - Jiangsu Electric (2006No.6) output power control cabinet on the v-~ [ ,],[3CY2000 type phase selector switch on the control system application analysis and selection phase of 3.1 Laboratory control system labs closing phase selector switch on the control precision is generally 3 to 5. Potential angle, using specially designed phase selection switch. The CY2000-based phase selection control switch on the control precision of 0.1. Potential angles,Beats By Dre Headphones, but also to ensure the overall system accuracy. CY2000-based phase selection control with phase selection switch is composed of phase selection control system. Figure 5: 1 - CY2000-site monitoring and control room-type selection phase controller 2 a reference phase voltage transformer 3 a control box 4 a phase selection switch 5 to switch this life phase selection control system in Figure 5 the actual 3.2 application problems and solutions in theory, phase selection switch for both the single-phase or three-phase test takes only one phase. General design A, C phase selector switch installation phase, B phase through such single-phase tests the flexibility to choose A, B phase or B, C phase; test phase, B phase as a pre-combined with the flexibility to choose A phase or C phase phase selection. Follow-up phase and phase selection phase synchronous action. But the actual switch A, C phase closing time will be different, thus the general election phase controller has two outputs, it is closing time for the follow-up phase difference adjustment. It is very important closing switches generally do not have the breaking capacity. Closing phase selector switch in the switch command received after the white security until the PLC in the pre-breaking lift switch to prevent pre-switch switch switch points before breaking off and cause injury. Thus phase selection control system and test the control system to the main controller ~ WPLC coordination. As the phase selection circuit three-phase laboratory are equipped with phase selection switch, PLC signal only with the move, which will be elected to three-phase controller output to be one of the pre-phase is set to co-phase. And because there is no phase selection control switch to protect themselves, thus setting the PLC should ensure self-protection in the selection and control, program-controlled pre-release before breaking breaker. The fundamental solution is: use with a phase selection function of the timing controller instead of PLC, the master system and the test phase selection control system as a whole, such as BE3200, CY2000-32 high-precision multi-channel timing controller. But difficult to accept the higher cost, which adopts PLC control system with phase selection should choose the appropriate combination of closing the auxiliary contact switch (contactor), the phase selection control system can switch on the white security to prevent former level before the switch-off closing switch-off and cause injury. References [1] CY2000 synchronization controller technology conditions [G]. Xi'an Chuangyuan Electrical Technology Co., Ltd.. [2] CY2000 phase selection controller instructions [G]. Xi'an Chuangyuan Electrical Technology Co., Ltd.. Revised draft date :2006-09-22 (on the next page 8) In sync pulse rate code,tods shoes outlet, according to the differential encoded data to find the appropriate phase word and fill in the register to complete the phase [3]. 3.4DDS implement other digital modulation with quadrature output of the DDS chip can also be done directly MSK, GMSK, Ⅱ / 4-2DQPSK and multiple QAM. Part of the input data to generate modulated data format conversion (converted to the corresponding modulation frequency, phase or amplitude information on the value of A), and shape, interpolation for the higher rate of base-band waveform data, while also providing system modulation parameters . 4 Conclusion based direct digital frequency synthesis (DDS) digital transfer a 24,Beats By Dre Studio, one system of a preliminary study, as opposed to analog modulation, digital modulation with high resolution, fully digital programmable, low phase noise, error rate and low. Select the connection using multiple carrier signals modulated signal and can achieve a variety of modulation of any switch. References [1] COMS125 delete zCompleteDDSSynthesizerAD9850 [G]. ANALOGDEVICES. [2] CHEN Zhi,MBTシューズ 販売店, Wang Lung. Direct digital frequency synthesis technology FM [J]. Telecommunications technology,Salvatore Ferragamo outlet, 1998,38 (2) :31-34. [3] Bear handsome, Lu Rongde, Huang Jinping, et al. Based on DDS technology to achieve a variety of digital modulation [J]. Control Technology, 2001,20 (8) :56-59. Revised draft date :2006 -09-15
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