Research And Design On Integrative Three-Phase Inverter For Gyroscope

The high-performance gyroscope power with good voltage and frequencystability is the part in order to guarantee the Gyrocompass worked safely and reliably.In view of the deficiencies of bulkiness, circuit complicatedness, bad frequencyprecision, the convenience in debugging and maintenance for the present domesticgyroscope power supply, a small, light gyroscope power with high voltage andfrequency stability is discussed in this paper.The subject has adopted the SPWM technology, controlling IPM by themicrocontroller to achieve the Invertion from DC to AC. The control circuit has two8-digit micro-processors. One of the CPUs is used as the main controller and the otheris used as the SPWM Signal Generator. This method improved the stability of thepower output voltage and the output frequency. And it turns the analog circuit into aanalog-digital one thus to reduced the complexity of the circuit and realized theminiaturization and lightweight of the gyroscope inverter.The content in this paper as follows:1)First, the research status of inverter is generally presented in this paper. Afterthat, the theory background for inverter design is discussed in detail.2)Worked out a holistic design scheme for the gyroscope power in the paper,designed the main circuit and the control circuit. The main circuit consists of the filtercircuit, the discharge circuit, the inverter circuit which consists of IPM- PS21563.thecontrolling circuit consists of the Keyboard circuit, the display circuit, the faulttreatment circuit, the indication circuit and the SPWM driver.3)Obtain the pulse width time by the combination of digital natural samplingbased spwm and C Program. With the assemble program, the microcontroller outputDriving SPWM signals automatically to control the Tubes of the inverter, achievingthe invertion from DC to AC. By controlling the operation of the power by MCU, itcan deal with various troubles in time, which improves the stability and theintelligentized degree of the power system and makes the system easier to use andmaintain.4)The property of the gyroscope power is validate by experiment. The stabilityof the gyroscope power output (voltage, frequency, current, ect.) meets the techniquerequest of the gyroscope power for Gyrocompass well.