Integrated device of high-frequency PWM rectification and inversion as well as control method thereof

A technology of rectification, inversion and control method, which is applied in the field of power electronics and can solve the problems of wasting energy, resistance heating, and low system efficiency.

CN101615861AInactive Publication Date: 2009-12-30NORTHEASTERN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2009-12-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an integrated device of high-frequency PWM rectification and inversion as well as a control method thereof, belonging to the technical field of power electronic technology. The integrated device comprises a main circuit unit, a drive and power amplifying unit, a PWM unit, a central control unit, an HMI unit, a voltage current mutual inductor, a power parameter measuring unit and a power unit, wherein the main circuit unit is connected with the voltage current mutual inductor and the drive and power amplifying unit; the drive and power amplifying unit is respectively connected with the power unit and the PWM; the PWM is respectively connected with the power unit and the central control unit; and the central control unit is respectively connected with the power parameter measuring unit and the HMI unit. In the starting process of a permanent magnet synchronous generator, steps direct current is converted into alternating current, and high-frequency alternating current generated by the permanent magnet synchronous generator in stable running is converted into direct current when the permanent magnet synchronous generator stably operates, thereby realizing energy double-flow.
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Description

technical field

[0001] The invention belongs to the technical field of power electronics, and in particular relates to a high-frequency PWM rectification and inverter integration device and a control method thereof. Background technique

[0002] Micro gas turbine power generation system is a new type of distributed power generation system developed rapidly in recent years. Its output power range is generally between 20KW and 500KW. It has the advantages of cleanness, reliability, multi-purpose and realization of combined cooling, heating and power. In addition, it can also be used as a mobile high-performance power supply to provide high-performance, stable and reliable power energy for power consumption systems in various special environments and special conditions. When the system is working, the power turbine drives the rotor of the permanent magnet generator to rotate at high speed on the air bearing to generate high-frequency alternating current, which is controlled and...

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Embodiment Construction

[0154] The block diagram of the device system structure of the present invention is as attached figure 1 shown. It consists of a main circuit unit, a drive and power amplification unit, a pulse modulation unit (PWM), a central control unit, a human-machine interface unit (HMI), a voltage and current transformer, a power parameter measurement unit, and a power supply unit. Among them, the main circuit unit includes power switching device IGBT, anti-parallel diode, absorber and DC filter capacitor; PWM control unit includes digital signal processor (DSP), programmable logic device CPLD, RS485 interface circuit; central control unit includes programmable Logic controllers (PLCs).

[0155] The main circuit unit is connected to the voltage and current transformer, drive and power amplification unit; the drive and power amplification unit are connected to the power supply unit and PWM control unit respectively; the PWM control unit is connected to the power supply unit and the cen...