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Motor speed-regulation system energy-saving controller based on super-capacitor energy storage and control method

A supercapacitor and motor speed regulation technology, applied in the direction of AC motor control, control system, electrical components, etc., can solve the problems of low operating efficiency of the motor speed regulation system, inability to effectively realize energy storage and reuse, and achieve storage and reuse, and improve operational efficiency

Inactive Publication Date: 2014-03-19
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the existing motor speed control system has low operating efficiency and cannot effectively realize energy storage and reuse, the present invention proposes an energy-saving controller and control method for the motor speed control system based on supercapacitor energy storage

Method used

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  • Motor speed-regulation system energy-saving controller based on super-capacitor energy storage and control method
  • Motor speed-regulation system energy-saving controller based on super-capacitor energy storage and control method
  • Motor speed-regulation system energy-saving controller based on super-capacitor energy storage and control method

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specific Embodiment approach 1

[0022] Specific implementation mode 1. Combination figure 1 Describe this embodiment, the energy-saving controller of the motor speed regulation system based on supercapacitor energy storage described in this embodiment, it includes a diode rectifier bridge 1, a first DC filter capacitor 2, an inverter 3, a bidirectional DC / DC power converter 5 and supercapacitor module 6,

[0023] The bidirectional DC / DC power converter 5 includes a second DC filter capacitor 7, an n-fold IGBT bridge circuit 8 and n filter inductors 9, wherein the n filter inductors include the first filter inductor L 1 , the second filter inductance L 2 ...the nth filter inductor Ln, where n is a positive integer, the DC bus voltage detection circuit 10, the supercapacitor voltage detection circuit 11, the current detection circuit 12, the A / D converter 13, the DSP controller 14 and the FPGA15,

[0024] The three-phase AC input terminal of the diode rectifier bridge 1 is connected to the three-phase grid, ...

specific Embodiment approach 2

[0034] Embodiment 2. The difference between this embodiment and the energy-saving controller of the motor speed regulation system based on supercapacitor energy storage described in Embodiment 1 is that the n-fold IGBT bridge circuit 8 includes 2n full control circuits 16, n is a positive integer, two full-control circuits 16 are connected to form a bridge arm, and the midpoint of each bridge arm is connected to a filter inductor L k , where, k=1~n, k is a positive integer;

[0035] Each of the full control circuits 16 includes an IGBT T 1 and diode D 1 , IGBT T 1 The collector of the diode D is connected 1 Cathode of IGBT T 1 The emitter of the diode D is connected 1 the anode.

[0036] In this embodiment, each IGBT is connected in antiparallel to each diode.

specific Embodiment approach 3

[0037] Embodiment 3. The difference between this embodiment and the energy-saving controller of the motor speed regulation system based on supercapacitor energy storage described in Embodiment 1 is that the supercapacitor module 6 includes two sets of capacitors and the two sets of capacitors are connected in parallel. , each capacitor group is composed of a plurality of capacitors connected in series.

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Abstract

The invention relates to a motor speed-regulation system energy-saving controller based on super-capacitor energy storage and a control method, and belongs to the field of motor energy-saving speed regulation, aiming at solving the problems of an existing motor speed regulation system that the operation efficiency is low and the energy can be effectively stored and reused. The motor speed regulation system energy-saving controller consists of a bi-directional DC / DC (direct-current / direct-current) power converter and a super-capacitor energy storage module, the high-voltage end of the bi-directional DC / DC power converter is connected with a direct-current bus of the alternating current-direct current-alternating-current structural motor driving device, and the low-voltage end of the bi-directional DC / DC power converter is connected with the super-capacitor energy storage module. The bi-directional DC / DC power converter adopts a multiple structure and comprises an IGBT (insulated bipolar gate transistor) bridge-type circuit, a filter inductance device, a current detection circuit, a direct-current bus voltage detection circuit, a super-capacitance voltage detection circuit, an A / D (analog / digital) converter, a DSP (digital signal processor) controller and an FPGA (field programmable gate array). The motor speed regulation system energy-saving controller can be applied to the fields of oil pumping machines, elevators, hoisters and the like.

Description

technical field [0001] The invention relates to an energy-saving controller and a control method of a motor speed regulation system, belonging to the field of motor energy-saving speed regulation. Background technique [0002] The frequency converter usually adopts AC-DC-AC converter topology, which is composed of diode rectifier bridge, DC bus filter capacitor and inverter. When the motor brakes and runs, it will generate regenerative electric energy. In order to prevent the regenerative electric energy from pumping up the bus voltage and burning out the device, the bus is usually connected in parallel with a chopper circuit to discharge the electric energy through a resistor. This is in the application of frequent braking operation of the motor causing a waste of energy. For this reason, scholars have proposed to connect the regenerative energy feedback unit of the inverter topology in anti-parallel at the traditional diode rectifier, or directly use the PWM rectifier to ...

Claims

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Application Information

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IPC IPC(8): H02P27/08H02J3/28
Inventor 安群涛孙力赵克魏鑫刘瑞博
Owner HARBIN INST OF TECH
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