Model: MPU-3 digitize constant power the IF control panel (small chip and 12 pulses).
Mainly by the power regulator, phase-shift control and protection circuits, adaptive phase sequence circuit, the start calculus circuit, inverter frequency tracking, inverter pulse forming pulse amplification and pulse transformers. Its core components used in high-performance, high-density, large-scale dedicated MPU-3 integrated circuits, and I plant the development of high-performance software combination, which made the intelligent control chip - MPU, the control circuit in addition to the board regulator, the rest were digitized, rectified trigger section does not require any adjustment, but also has high reliability, and high pulse symmetry, strong anti-disturbance ability, fast response, and adaptive circuit phase sequence without synchronization transformer dismissed from the on-site commissioning phase modulation sequencer synchronization of work, only to the the six thyristor door of the two three-phase self cathode line access to the control panel terminal rectifier part they can be put into operation. b. inverter sweep zero voltage soft start, start-up performance is better than ordinary zero-voltage soft start circuit, and features automatic repeat start circuit to prevent the IF power occasionally failed to start, start success rate of 100%. Frequency track circuit uses the average of the sampling program, improved anti-jamming capability of the inverter, and only sampled IF voltage signal, without the tank capacitor current signal, eliminating the need for external IF current transformer to determine the sampling current phase troubles. Therefore, commissioning and use of on-site, will not be due to the IF output line or sampling phase current transformer connected in reverse, while the generated the IF power can not start problems. c inverter circuit plus the inverter angle adjustment circuit, and can automatically adjust the load impedance matching, achieve constant power output can be made fast melting frequency power supply, to save time, energy saving, improve the network side power the purpose of the factor (this feature can also be turned off). The main circuit of the inverter part of the interior of the LSI in the MPU, is also a digital circuit. d. MPU-3 type 12 pulse thyristor frequency power supply control board full board only 12 IC 7 thyristor seven trimmer potentiometer, 47 lead terminal, very easy to install. The high degree of integration of the circuit, the failure rate is very low. Applicable to a variety of thyristor parallel resonant intermediate frequency power supply. e MPU-12 pulse thyristor frequency power supply control panel designed to seek a wide range of views, adopt effective measures, makes deb ing extremely convenient. Automatically set most of the parameters set by the circuit internal parameter settings need only 6 of the user to adjust the potentiometer so strong versatility and interchangeability. f The MPU-3 type 12 pulse thyristor frequency power supply control board, which is basically a synthesis of the two sets of single bridge control circuit, the core part of the current balance circuit when unbalanced load or the line voltage current does not cause the two bridges equilibrium, it can automatically adjust the current of the two bridges, so tend consistent. g. MPU-3 type 12 pulse wave constant power control board, the main circuit with double bridge rectifier, can greatly reduce power caused by the operation of grid harmonics and improve the power number and operating efficiency.
CONTACT: ESON ZHAO
