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Permanent magnet drive motor for solar tracking system

A permanent magnet drive, sun tracking technology, applied in the field of permanent magnet drive motor, low torque fluctuation surface-mounted or built-in permanent magnet drive motor, can solve the problem of low precision, narrow speed regulation range, affecting motor efficiency, wide speed regulation Stable and low noise, etc., to achieve the effect of high-precision and smooth operation, reduced torque fluctuation, and reduced torque fluctuation

Active Publication Date: 2010-12-15
苏州和鑫电气股份有限公司 +1
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AI Technical Summary

Problems solved by technology

The armature excitation of the permanent magnet brushless DC motor (PMBLM) currently being developed at home and abroad is a "non-circular jumping" rotating magnetic field, which has large torque fluctuations, low precision, and narrow speed regulation range, which affects the efficiency of the motor. , wide speed regulation, stable and low-noise operation

Method used

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  • Permanent magnet drive motor for solar tracking system
  • Permanent magnet drive motor for solar tracking system
  • Permanent magnet drive motor for solar tracking system

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Embodiment Construction

[0024] Aiming at the defects of high power consumption, low efficiency, and large torque fluctuation in the sun tracking drive motor, the invention provides a permanent magnet drive motor for the sun tracking system, which can effectively track the rotation of the sun's altitude angle and azimuth angle, run according to the sun's motion track, and track The sun is from east to west and the sun's declination angle, so that the sun's light is always irradiated vertically on the surface of the object, ensuring the maximum solar radiation energy, ensuring that the solar cell array is facing the sun at any time during the day, and realizing automatic sun-facing for 8 hours a day Track in real time. The performance optimization technology of the sun tracking drive motor of the present invention can reduce permanent magnet eddy current loss by 50%, reduce torque fluctuation by 40%, increase output torque by 10%, and increase power density by 12%.

[0025] Such as figure 1 As shown, ...

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Abstract

The invention relates to a permanent magnet drive motor for a solar tracking system, which comprises an enclosure, a stator and a rotor which are arranged in the enclosure, wherein, the stator comprises a stator core and a stator winding which are fixed on an inner wall of the enclosure, and the stator core comprises a stator magnetic yoke, a stator slot and stator teeth; the rotor comprises a rotating shaft and a rotor core, and a permanent magnet slot is uniformly arranged along the periphery of the rotor core; the permanent magnet slot is internally inlaid with radial magnetized rectangular strip magnetic steel, the radial magnetized rectangular strip magnetic steel and a pole piece form a permanent magnet pole, and an excircle of a rotor pole piece is in a concentric or excentric arc curved surface shape to form uniformly or non-uniformly symmetrical air gap; semi-circle grooves are arranged on two ends of the permanent magnet slot in which one of two pieces of adjacent radial magnetized rectangular strip magnetic steel is arranged; and rectangular supporting bars are radially inserted in the permanent magnet slot in which the V-shaped radial magnetized rectangular strip magnetic steel is arranged. The permanent magnet drive motor has the characteristics of high efficiency, high output power, high reliability, low moment fluctuation and the like.

Description

technical field [0001] The invention relates to a permanent magnet drive motor, in particular to a surface-mounted or built-in permanent magnet drive motor for a sun tracking system with high efficiency, high output, high power density, high reliability and low torque fluctuation, and belongs to the technical field of motors. Background technique [0002] The sun tracking system is designed for the application of solar photovoltaic power generation that needs to track the sun in real time. The basic function is to make the photovoltaic array rotate with the sun to achieve high-precision sun tracking. The stability and reliability of the sun tracker has always been the main problem that it has not been applied on a large scale, and the performance of the driving motor is one of the keys. At present, the sun tracking drive motors at home and abroad basically adopt permanent magnet DC motors, which have high power consumption, low efficiency, poor electromagnetic compatibility...

Claims

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Application Information

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IPC IPC(8): H02K1/27H02K21/14
Inventor 林德芳胡岗
Owner 苏州和鑫电气股份有限公司
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