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Double salient motor system for non-position sensor and control method thereof

A doubly salient motor and control circuit technology, applied in the direction of single motor speed/torque control, electronic commutator, etc., to simplify the structure of the analog system, reduce costs, and save research funds

Inactive Publication Date: 2009-08-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no effective method for position sensorless control of doubly salient motors at home and abroad

Method used

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  • Double salient motor system for non-position sensor and control method thereof
  • Double salient motor system for non-position sensor and control method thereof
  • Double salient motor system for non-position sensor and control method thereof

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Embodiment Construction

[0012] Such as figure 1 shown. A sensorless doubly salient motor system consisting of a doubly salient motor, an excitation winding, a main power circuit and a control circuit, wherein the main power circuit includes a power supply and an IPM, and the two output ends of the power supply are respectively connected to the two inputs of the IPM The three output terminals of the IPM are respectively connected to the three input terminals of the doubly salient pole motor, and the output terminals of the doubly salient pole motor are connected to the input terminals of the excitation winding. The control circuit includes an isolation circuit, a fault detection circuit, three Phase current sampling circuit, excitation current sampling circuit, PWM control circuit, overcurrent and overvoltage protection circuit, ADC module, position detection circuit, speed calculation circuit, logic control circuit, capture unit, speed loop, current loop, hysteresis comparator and PI regulator, wher...

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Abstract

The invention discloses a rotor-position sensor doubly salient motor system and a control method thereof, belonging to the field of doubly salient motor systems and the control method thereof. The system consists of a doubly salient motor, an excitation winding, a main power circuit and a control circuit, wherein, the main power circuit comprises a power supply and an IPM; and the control circuit comprises an isolation circuit, a failure detection circuit, a three-phase current sampling circuit, an excitation current sampling circuit, a PWM control circuit, an over-current and over-voltage protection circuit, an ADC module, a position detecting circuit, a rotation speed calculation circuit, a logic control circuit, a capture unit, a speed loop, a current loop, a hysteresis comparator and a PI regulator. The control method indirectly controls the current of the doubly salient motor by adopting a dual-loop control type of internal loop for current and external loop for rotation speed and comparing the given rotation speed for reference with the fed practical rotation speed. The method has simple system, firmer structure, reliable operation and high efficiency.

Description

technical field [0001] The invention relates to a doubly salient motor system and a control method thereof, in particular to a position sensorless doubly salient motor system and a control method thereof. Background technique [0002] For the electrically excited doubly salient motor drive system, real-time and accurate rotor position information is a necessary prerequisite for its reliable operation. Obtaining position information by using shaft position sensors or other types of detection position detectors will not only increase the size of the motor, increase the cost and complexity of the system, but more importantly, reduce the robustness of the system structure and affect the reliable operation of the entire system . Therefore, how to remove the position detector and directly use the voltage and current information of the motor to indirectly determine the rotor position, so as to make the system structure stronger, the operation more reliable, efficient, and lower co...

Claims

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Application Information

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IPC IPC(8): H02P6/06H02P6/18
Inventor 张乐周波张永帅
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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