JP2008109830A - Permanent magnet generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems wherein whether electricity, having more torque than the amount of electricity used for medium speed and a drive motor can be generated, since it is desired to generate electric power by rotating a generator with a motor, and whether the generator can be readily manufactured manually, by making a magnetic plate for preventing scattering to be eliminated. <P>SOLUTION: Since the number of stationary coils and that of rotating magnet poles are the same, the electricity that exceeds the amount of electricity used for driving the motor can be generated, when many poles are built. Thin strong magnets of fan shapes are used, so that it becomes easy to do manual work; and since assembling of repelling magnets are very much facilitated, thinner magnets are desired; and in this way, more torque can be obtained in a power generation current; and according to this structure, separation-preventing structure becomes simpler, when magnetic poles are assembled on the rotating shaft, since adjacent poles attract one another; and the magnets are prevented from jumping out, by merely pressing down the magnets with a fixing disk and a T-shaped partition plate of a compression disk lid. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

In a distributed winding coil, a permanent magnet generator that generates electric power by repelling the same poles of permanent magnets to push magnetic flux to the coil side and rotating it to cut the magnetic flux.

In the past, rectangular magnets were used, and in order to prevent the magnets from scattering, they were surrounded by a magnetic plate and the magnetic flux was transmitted from the magnetic plate to the coil. Concentrated winding is used for the coil.

  JP 2002-238191 A

Problems to be solved by the invention

It was impossible to manufacture and process a long and long permanent magnet rotor with a rectangle of strong magnets.

How can we eliminate the magnetic plate or prevent it from scattering?

If the voltage increases too much, the torque of the current does not come out much.

Means for solving the problem

The thickness of the strong magnet is reduced, the shape is fan-shaped, the magnetic force is applied to the coil side and the rotating shaft side, a clearance of 10 mm or more is provided on the rotating shaft side, and the clearance on the coil side is as close as possible to 0 mm. The length of the magnet is measured by dividing the circumference in the coil by the number of coils in one phase wire. Fig. 1 Fig. 2

A compressed magnet was fixed in the partition of the stainless steel plate, and the magnetic flux was pushed out to the coil side. FIG.

In order to increase the voltage too much, the three-phase one-phase coil connection is divided into a right-handed coil and a left-handed coil.

The invention's effect

The permanent magnet rotor is made into a fan-shaped thin magnet so that it can be manually inserted into the mounting bracket. Since the weight of each magnet is light to prevent scattering, the end of the rotor I found that the discs that hold the plate and the strips attached on the partition plate do not scatter, and because the magnetic plate is not used, the process and production costs are low. 1 and FIG.

Since the strong magnet was thin and fan-shaped and compressed, torque was generated in the generated current. The thinner the magnet, the more torque was generated in the current.

Since the permanent magnet generator coil uses three-phase distributed winding, the number of times the magnetic flux cuts the fixed coil of one rotation of the magnet rotating shaft when generating power with a six-pole generator is 108 times of power generation.

In the case of a 6-pole generator, if the coil is divided into a right-handed winding and a left-handed winding, the 1-phase coil becomes 3 right-handed coils and 3 left-handed coils, and the remaining 2 phase wires are connected in the same way. , FIG.
When three coils are connected, the rotation speed of the rotary shaft to increase the voltage to 200V is 830 rpm. The rotation speed of the rotating shaft to increase the voltage to 300V is about 1320.

If you want to increase the voltage at a certain number of revolutions, increase the number of coil connections, and if you want to decrease the voltage, decrease the number of coil connections.

Two commercial motors or two permanent magnet generators can be driven to rotate with two sets of permanent magnet generator output lines. When connecting directly from a generator to a commercial motor, the same as the generator. If you fix a commercially available motor for coil connection, the capacity will increase.

When the generated electricity is put into an inverter and a commercially available motor is turned, the coil is used as it is on the market. Also, when the permanent magnet generator is turned, the coil remains as it is and two output lines are connected to each other with UVW. use

In order to rotate like a brushless DC motor, it is not necessary to switch each coil by a semiconductor element by energization control.

6-pole stator coil connection method Numbered with 1-phase wire marked with ○, 2-phase wire marked with ◎, and 3-phase wire marked with □, Fig. 3
For left-handed connection of 1-phase wire ○, the neutral point is 19 and the output line is output from 24 → 7 → 12 → 31 → 36.
For the right-handed connection of the 1-phase wire ○, the neutral point is No. 30 and the output line is output from No. 1 to 25 → 18 → 13 → 6.
For the left-handed connection of 2-phase wire ◎, the neutral point is No. 23 and the output line is output from No. 4 from 28 → 11 → 16 → 35.
For the two-phase wire ◎ right-handed connection, the neutral point is No. 34 and the output line is output from No. 5 to 29 → 22 → 17 → 10.
Three-phase wire □ left-handed connection, with neutral point No. 27 and output line from No. 8 to 32 → 15 → 20 → 3,
For the three-phase wire □ right-handed connection, the neutral point is No. 2 and the output line is output from No. 9 to 33 → 26 → 21 → 14.

Drawing that compresses a strong magnet, presses both ends, and presses it with a band to prevent it from popping out. The order in which the magnetic poles are arranged in the fan-shaped magnet. Stator coil, double star connection. Fan permanent magnet pole layout

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotating shaft stainless steel pipe Collar 2 Stator 3 Coil 4 Stator yoke 5 Copper wire 6 Rotor 7 Rotating shaft 8 Compression fixed disk 9 Strong permanent magnet 10 Positive pole 11 Negative pole 12 Fixing bracket 13 Magnetic flux 14 Star connection right output line 15 Star Connection left output line 16 Neutral point 17 Cooling fan 18 Compression and fixing lid 19 Permanent magnet fan type 20 Lid outer cover 21 T-shaped partition plate, pop-out prevention 22 Neutral point right-hand winding 23 Neutral point left-hand winding

Claims (4)

A distributed winding three-phase wire stator coil is made on the stator yoke, and a thin fan-shaped strong magnet is arranged on the rotating shaft so that the same number of magnets are arranged in a row to match the length of the stator yoke. The fan-shaped outer peripheral magnetic force is directed to the coil side and the fan-shaped inner peripheral magnetic force is directed to the rotating shaft. The repulsive magnets arranged in this way are compressed and fixed until the interval is about 1 mm. If the coil side is a plus pole, it will be one plus magnet pole. In the case of 6 poles, 6 magnet poles can be made parallel to the rotation axis. Arrange to attract. Since the number of magnet poles is the same as the number of stator coils for one three-phase wire, an even number of coils and magnet poles can be added. Distributed winding three-phase coil connection is divided into right-handed winding and left-handed winding, and two sets of star connections are made with right-handed star connection and left-handed star connection. Since each line can be taken, use two output lines or connect two lines one at a time. Use neutral points for right-handed or left-handed connections. Stainless steel is used for the anti-scattering and pole-pole partition plate.

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