CN202586560U - Low temperature rise excitation generator - Google Patents

Abstract

The utility model discloses a low temperature rise excitation generator, it includes three winding and a plurality of magnetic pole, the winding comprises a plurality of coil, the inside current direction of the rotatory drive coil of magnetic pole changes, adjusts the phase difference between two adjacent coils, and when the inside current direction of two adjacent coils was opposite, one of them inside current direction coil head end left and one of them inside current direction coil tail end right linked to each other, and the coil head end of inside current direction right links to each other with another inside current direction coil tail end left simultaneously, and the unchangeable coil of inside current direction is connected with adjacent coil. The utility model discloses a change two adjacent coil connected modes, when two adjacent coil current direction are opposite, two coil internal current can not offset, reduced energy loss and operating temperature, improved the generating efficiency.

Description

Low temperature rise excitation generator

technical field

The utility model relates to a generator, in particular to a low-temperature rise excitation generator.

Background technique

The generator is an electromagnetic device that converts mechanical energy and electrical energy through the medium of electromagnetic field. In order to establish an electromechanical energy conversion system in the motor, two methods are usually used: one is to pass current into the winding of the generator, and use the current to generate a magnetic field to form an excitation system, such as ordinary DC motors and synchronous motors; The generator not only needs to have special windings and corresponding devices, but also needs to continuously provide energy to maintain the current; another kind of generator is to generate a magnetic field by a permanent magnet, using the inherent characteristics of the permanent magnet, after pre-magnetization, no external Any energy can create a magnetic field around it.

Since the advent of generators, the phenomenon of high temperature has always existed. Whether it is a synchronous generator or an asynchronous generator, it has never gotten rid of the dependence on the cooling system, and the working efficiency is usually less than 50%. As shown in Figure 5, an existing three-phase asynchronous generator includes three windings, each winding is composed of twelve coils, and a number of magnetic poles are arranged outside the windings. Since the number of coils and the number of magnetic poles of the windings cannot be guaranteed The corresponding relationship is 1:1, and the connection mode between the coils is a serial synchronous mode. This structure causes the direction of the current generated in different coils of each winding to be unable to change at the same time after the magnetic poles run, that is, The phase difference of the internal currents of different coils is not zero, resulting in high temperature.

Due to the high temperature phenomenon in the operation of the generator, when the generator runs for a period of time, it is easy to have coil burnout, demagnetization, magnet bursting and other phenomena, resulting in the failure of the generator to work normally. Although some asynchronous generator fans, liquid circulation cooling and other methods are used to cool down, they cannot fundamentally solve the problems of working temperature rise and low efficiency of current generators, and such generators are bulky and costly to manufacture.

Contents of the invention

The utility model aims at providing a low-temperature rise excitation generator which reduces the working temperature and improves the power generation efficiency in view of the defects in the above-mentioned background technology.

In order to achieve the above purpose, the utility model discloses a low-temperature rise excitation generator, which includes several windings and several magnetic poles, the winding has several coils, the rotation of the magnetic poles drives the direction of the current inside the coils to change, and the phases of the current phasors are the same The coils are electrically connected to form a new winding.

The utility model discloses a low-temperature rise excitation generator, which comprises three windings and several magnetic poles. The windings are composed of several coils. The rotation of the magnetic poles drives the direction of the internal current of the coil to change, and the direction of the internal current of two adjacent coils changes. On the contrary, the head end of one of the coils whose internal current direction is to the left is connected to the tail end of one of the coils whose internal current direction is to the right, and at the same time, the head end of the coil whose internal current direction is to the right is connected to the tail end of the other coil whose internal current direction is to the left. Coils with constant internal current direction are connected to adjacent coils.

The utility model discloses a low temperature rise excitation generator, which comprises three windings and four magnetic poles, the windings are composed of 1 ₁ coil, 1 ₂ coil, 1 ₃ coil, 1 ₄ coil, 2 ₁ coil, 2 ₂ coil , 2 ₃ coils, 2 ₄ coils, 3 1 coils, 3 ₂ coils, 3 ₃ coils, 3 ₄ coils, 4 ₁ coils, 4 ₂ coils, 4 ₃ coils and _{4 4 coils} , the rotation of the magnetic poles drives the internal current of the coils Direction changes, the 1 ₁ coil, 1 ₂ coil, 1 ₃ coil and 1 ₄ coil internal current phasor phases are different, while the 1 ₁ coil, 2 ₁ coil, 3 ₁ coil and 4 ₁ coil internal current phasor phase Same, the 1 ₂ coil, 2 ₂ coil, 3 ₂ coil and 4 ₂ coil internal current phasor phases are the same, the 1 ₃ coil, 2 ₃ coil, 3 ₃ coil and 4 ₃ coil internal current phasor phases are the same, The 1 ₄ coil, 2 ₄ coil, 3 ₄ coil and 4 ₄ coil have the same internal current phasor phase; the 1 ₁ coil, 2 1 coil, 3 ₁ coil and _{4 1 coil} form the first winding, and the 1 ₂ Coils, 2 ₂ coils, 3 ₂ coils and 4 ₂ coils form the second winding, the 1 ₃ coils, 2 ₃ coils, 3 ₃ coils and 4 ₃ coils form the third winding, the 1 ₄ coils, 2 ₄ coils, The ₃₄ coils and the ₄₄ coils form the fourth winding, and the first winding, the second winding, the third winding and the fourth winding respectively form an independent power supply unit.

Further, a rectification unit is also included, and the first winding, the second winding, the third winding and the fourth winding are connected in parallel to output power through the rectification unit.

To sum up, the utility model changes the connection mode of two adjacent coils, and when the current directions of the two adjacent coils are opposite, the internal currents of the two coils will not cancel, which reduces energy loss and operating temperature, and improves power generation efficiency.

Description of drawings

Fig. 1 is a schematic diagram of the combined structure of the winding and the magnetic pole of the utility model.

Fig. 2 is a structural schematic diagram of the coil connection of the winding of the present invention shown in Fig. 1 .

FIG. 3 is a schematic diagram of another winding structure of the present invention.

Fig. 4 is a structural schematic diagram of the coil connection of the winding of the present invention shown in Fig. 3 .

Fig. 5 is a structural schematic diagram of the coil connection of the conventional generator winding.

Detailed ways

In order to further understand the features, technical means, and specific objectives and functions of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

The low-temperature rise excitation generator of the utility model includes several windings and several magnetic poles, the windings have several coils, and the rotation of the magnetic poles drives the internal current direction of the coils to change continuously, detects the phase of the current phasor in the coils, and adjusts the electrical connection The phase difference between the coils is such that the phase difference between the electrically connected coils is zero, and a new winding is formed by electrically connecting the coils with the same phase of the current phasor.

first embodiment

As shown in Figures 1 and 2, the low-temperature rise excitation generator of the present invention includes three windings 100 and eight magnetic poles 200. The windings 100 are composed of twelve coils, and the rotation of the magnetic poles 200 drives the direction of the current inside the coils to continuously Changes, through detection, it is found that the magnetic pole 200 rotates one cycle, and the internal current cycle changes of the twelve coils are as follows:

→ ← ○ → ← ○ → ← ○ → ← ○

○ → ← ○ → ← ○ → ← ○ → ←

← ○ → ← ○ → ← ○ → ← ○ →

→ ← ○ → ← ○ → ← ○ → ← ○

○ → ← ○ → ← ○ → ← ○ → ←

← ○ → ← ○ → ← ○ → ← ○ →

→ ← ○ → ← ○ → ← ○ → ← ○

○ → ← ○ → ← ○ → ← ○ → ←

← ○ → ← ○ → ← ○ → ← ○ →

→ ← ○ → ← ○ → ← ○ → ← ○

○ → ← ○ → ← ○ → ← ○ → ←

← ○ → ← ○ → ← ○ → ← ○ →

Among them, "→" indicates that the direction of the current inside the coil is to the left, "←" indicates that the direction of the current inside the coil is to the right, "○" indicates that the direction of the current inside the coil remains unchanged, and the current phase difference between adjacent coils is changed to make the current phase of adjacent coils The difference is zero, the head end of one of the coils whose internal current direction is to the left is connected to the tail end of one of the coils whose internal current direction is to the right, and at the same time the head end of the coil whose internal current direction is to the right is connected to the end of the other coil whose internal current direction is to the left The coils with the same internal current direction are connected to the adjacent coils arbitrarily.

When the utility model is implemented, when the current directions of two adjacent coils are opposite, by changing the head-to-tail connection mode of the two adjacent coils, the internal currents of the two coils will not be offset, reducing energy loss and operating temperature, and improving power generation efficiency.

second embodiment

As shown in Figure 3 and Figure 4, the low temperature rise excitation generator of the present invention includes three windings 100 and four magnetic poles (not shown in the figure), and the winding 100 consists of 1 ₁ coil, 1 ₂ coil, 1 ₃ coil, 1 ₄ coils, 2 ₁ coils, 2 ₂ coils, 2 3 coils, 2 ₄ coils, 3 _{1 coils, 3 2 coils} , 3 ₃ coils, 3 ₄ coils, 4 ₁ coils, 4 ₂ coils, 4 ₃ coils and _{4 4 coils} It is composed of sixteen coils. The rotation of the magnetic poles drives the internal current direction of the coils to change continuously. It is found through detection that when the magnetic poles rotate for one cycle, the internal currents of the 1 ₁ coil, 1 ₂ coil, 1 ₃ coil and 1 ₄ coil The phasor cumulative phase difference is 72°, and the internal current phasor phases of the 1 ₁ coil, 2 ₁ coil, 3 ₁ coil and 4 ₁ coil are the same, and the 1 ₂ coil, 2 ₂ coil, 3 ₂ coil and 4 _{2 coil} The phases of the internal current phasors of the coils are the same, the phases of the internal current phasors of the 1 ₃ coils, 2 ₃ coils, 3 ₃ coils and 4 ₃ coils are the same, and the internal current phasors of the 1 ₄ coils, 2 ₄ coils, 3 ₄ coils and 4 ₄ coils are The current phasors are in the same phase.

Adjust the phase difference between the coils in the winding 100 so that the phase difference of the electrically connected coils is zero; at this time, the 1 ₁ coil, 2 ₁ coil, 3 ₁ coil and 4 ₁ coil form the first winding 300 , the 1 ₂ coils, 2 ₂ coils, 3 ₂ coils and 4 ₂ coils form the second winding 400, the 1 ₃ coils, 2 ₃ coils, 3 ₃ coils and 4 ₃ coils form the third winding 500, the 1 ₄ coils, ₂₄ coils, ₃₄ coils and ₄₄ coils form the fourth winding 600, and the first winding 300, the second winding 400, the third winding 500 and the fourth winding 600 respectively form the independent power supply unit of the present utility model , the first winding 300, the second winding 400, the third winding 500 and the fourth winding 600 can also output power in parallel through the rectifier unit.

When the utility model is implemented, when the current directions of the two adjacent coils are opposite, by changing the head-to-tail connection mode of the two adjacent coils, the internal currents of the two coils will not be offset, reducing energy loss and operating temperature, and improving power generation efficiency; Different coils with the same internal current phasor are combined to form an independent power supply unit, which separates one generator into multiple independent generators, further improving the function of the product.

To sum up, the utility model changes the connection mode of two adjacent coils, and when the current directions of the two adjacent coils are opposite, the internal currents of the two coils will not cancel, which reduces energy loss and operating temperature, and improves power generation efficiency.

The above-mentioned embodiment only expresses one implementation mode of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the scope of the present utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present utility model should be based on the appended claims.

Claims (4)

1. A low-temperature rise excitation generator is characterized in that: it comprises some windings and some magnetic poles, the windings have some coils, and the rotation of the magnetic poles drives the direction of the internal current in the coils to change, and the phase of the current phasor is the same as that of the coils. connection to form a new winding. 2. A low-temperature rise excitation generator, characterized in that: it comprises three windings and several magnetic poles, the windings are composed of several coils, the rotation of the magnetic poles drives the internal current direction of the coil to change, and the internal current direction of two adjacent coils On the contrary, the head end of one of the coils whose internal current direction is to the left is connected to the tail end of one of the coils whose internal current direction is to the right, and at the same time, the head end of the coil whose internal current direction is to the right is connected to the tail end of the other coil whose internal current direction is to the left. Coils with constant internal current direction are connected to adjacent coils. 3. A low-temperature rise excitation generator, characterized in that it includes three windings and four magnetic poles, the windings are composed of 1 ₁ coil, 1 ₂ coil, 1 ₃ coil, 1 ₄ coil, 2 ₁ coil, 2 ₂ coil , 2 ₃ coils, 2 ₄ coils, 3 1 coils, 3 ₂ coils, 3 ₃ coils, 3 ₄ coils, 4 ₁ coils, 4 ₂ coils, 4 ₃ coils and _{4 4 coils} , the rotation of the magnetic poles drives the internal current of the coils Direction changes, the 1 ₁ coil, 1 ₂ coil, 1 ₃ coil and 1 ₄ coil internal current phasor phases are different, while the 1 ₁ coil, 2 ₁ coil, 3 ₁ coil and 4 ₁ coil internal current phasor phase Same, the 1 ₂ coil, 2 ₂ coil, 3 ₂ coil and 4 ₂ coil internal current phasor phases are the same, the 1 ₃ coil, 2 ₃ coil, 3 ₃ coil and 4 ₃ coil internal current phasor phases are the same, The 1 ₄ coil, 2 ₄ coil, 3 ₄ coil and 4 ₄ coil have the same internal current phasor phase; the 1 ₁ coil, 2 1 coil, 3 ₁ coil and _{4 1 coil} form the first winding, and the 1 ₂ Coils, 2 ₂ coils, 3 ₂ coils and 4 ₂ coils form the second winding, the 1 ₃ coils, 2 ₃ coils, 3 ₃ coils and 4 ₃ coils form the third winding, the 1 ₄ coils, 2 ₄ coils, The ₃₄ coils and the ₄₄ coils form the fourth winding, and the first winding, the second winding, the third winding and the fourth winding respectively form an independent power supply unit. 4. The low-temperature rise excitation generator according to claim 3, further comprising a rectification unit, and the first winding, the second winding, the third winding and the fourth winding are connected in parallel to output power through the rectification unit.

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