Method for fixing turn-on angle and optimizing turn-off angle of switched reluctance generator

A technology of switched reluctance and turn-off angle, which is applied in the field of switched reluctance generator with fixed turn-on angle and optimized turn-off angle, which can solve the problems of lack of versatility, lack of theoretical basis, and changes.

Inactive Publication Date: 2009-10-14
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0003] ①At present, domestic and foreign scholars' research on the angle control of switched reluctance generators is mainly focused on optimizing the opening and closing angles to obtain the maximum output power through simulation and experiments. This optimization method relies on experience accumulation and practice, and to a certain extent lack of theoretical basis
[0004] ②The traditional angle optimization method requires multiple simulations and experiments to obtain results,

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  • Method for fixing turn-on angle and optimizing turn-off angle of switched reluctance generator
  • Method for fixing turn-on angle and optimizing turn-off angle of switched reluctance generator

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Embodiment Construction

[0039] The method of the present invention is divided into the following steps: 1. initialization inductance parameter L max , K, θ 1 , θ 2 , θ 4 , θ 6 , and the opening angle corresponding to the origin of the coordinates is determined accordingly. Note that the origin of the coordinates should be in the rising section of the inductance (see attached Figure 7 ). 2. Judging whether the initialization is reasonable, if it is reasonable, calculate the cut-off angle range, otherwise return to step 1 and re-initialize, the process of this step is shown in the appendix Figure 6 . 3. Calculate D, f(x 1 ), f(x 2 ), f(D), f′(x 1 ), f′(x 2 ), f'(D). 4. Find the cut-off angle corresponding to the maximum average electromagnetic power. When D changes between the origin and the axis of symmetry, if it falls in the middle of the cut-off angle interval (see appendix Figure 8Figure a), use Calculation 1 to solve the cut-off angle; if it falls on the left side of the cut-off an...

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Abstract

The invention discloses a method for fixing a turn-on angle and optimizing a turn-off angle of a switched reluctance generator, belonging to the technical field of control of the switched reluctance generators. The method is as follows: 1. a phase current expression is firstly derived according to a voltage equation of the switched reluctance generator, an average electromagnetic power expression in a cycle is calculated by integration based thereon, and a factor which is only related to the turn-on angle and the turn-off angle is separated therefrom. 2. The turn-on angle is then fixed, the turn-off angle changes in a reasonable range, the factor is taken as a single-variable function of the turn-off angle, and the turn-off angle which is corresponding to the maximum value is solved by three situations according to the features of a high order derivative thereof. The method is based on the theory, simple and easy to operate and good in universality.

Description

technical field [0001] The invention relates to a method for optimizing the cut-off angle by fixing the opening angle of a switched reluctance generator, and belongs to the technical field of switched reluctance generator control. Background technique [0002] The control of switched reluctance generator is usually divided into three types: current chopping control, voltage PWM control and angle position control. [0003] ①At present, domestic and foreign scholars' research on the angle control of switched reluctance generators is mainly focused on optimizing the opening and closing angles to obtain the maximum output power through simulation and experiments. This optimization method relies on experience accumulation and practice, and to a certain extent Lack of theoretical basis. [0004] ②The traditional angle optimization method requires multiple simulations and experiments to obtain the results, which is complicated and requires a lot of work. [0005] ③The conclusion ...

Claims

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Application Information

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IPC IPC(8): H02P9/00
Inventor 姚瑱邓智泉曹鑫蔡骏庄铮
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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