JP2002138945A - Motor type power generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor type power generator which produces less noise and no pollution by using a small motor. SOLUTION: A dead weight 4 in an arm 2 is pulled to a center side by a spring 6 in an early stage of rotation, and the flywheel can be rotated even with a starting torque due to a small effect of a flywheel 1. A small motor and the power generator are connected by a pulley and a belt, whereby the power generator is rotated simultaneously with start of the small motor. The dead weight 4 in the flywheel mounted in the power generator moves by a centrifugal force from an inner periphery to an outer periphery in proportion to increase of the number of rotation. When the small motor reaches a constant speed rotation by which a maximum torque is generated, the dead weight 4 moves to an outermost side, thereby maximizing the effect of the flywheel. Thus, even if an electric load of an output of the power generator increases and a magnetic resistance of the power generator itself increases, the rotation is continued by the flywheel effect.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor-driven generator for generating a low-noise, non-polluting power by turning a generator with a small-power small motor.

[0002]

2. Description of the Related Art Conventionally, as a mobile generator, an engine generator using gasoline or light oil as fuel is generally used.
This is due to the noise of the engine and the generation of carbon dioxide and the like when generating power, which has caused problems of noise pollution and environmental pollution. Recently, fuel cells using hydrogen as a fuel have been developed, but are still expensive in terms of cost.

[0003]

SUMMARY OF THE INVENTION The present invention uses a low-power, small-sized motor to turn a generator to produce a low-noise, non-polluting, lightweight mobile generator, which has the disadvantages of conventional engine generators. It is intended to solve problems such as carbon dioxide.

[0004]

The present invention uses a flywheel whose center of gravity moves from the inner circumference to the outer circumference depending on the number of revolutions on the generator side as a means for rotating the generator with a small-power small motor. The magnetic resistance when the output power load is increased is offset by the centrifugal force effect. This enables a large-sized generator to be turned by a small-sized, small-power motor so that low-noise, pollution-free mobile power generation can be performed.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of the inside of a flywheel attached to the generator side. A guide 3 is provided on the left and right inside the arm 2, and a movable weight 4 is provided along the guide 3. The weight 4 is provided with a spring 6 or rubber between the center 4 and the boss 5 on the center side.

When the small motor is started, the starting torque is small, so that a large flywheel cannot be turned. At the initial stage of rotation, the weight 4 inside the arm 2 is pulled toward the center by the spring 6 and rotates with a small starting torque because the effect of the flywheel is small. When the switch 18 provided at the output of the storage battery is turned on, the storage battery voltage is converted into an alternating current by the inverter 15 and supplied to the small motor. Since the small motor and the generator are connected by a pulley and a belt, the generator rotates when the small motor starts. The weight 4 inside the flywheel 1 attached to the generator moves from the inner circumference to the outer circumference by centrifugal force in proportion to an increase in the rotation speed. When reaching a constant speed rotation at which the maximum torque of the small motor is reached, the weight 4 moves to the outermost side and maximizes the flywheel effect. Thus, even if the power load of the generator output increases and the magnetic resistance of the generator itself increases, the rotation is continued by the flywheel effect.

Since the power output of the generator is three-phase 200V, it is converted to single-phase 100V by the conversion transformer 14 and supplied to the load electrical equipment. A part of the power generation output always charges the storage battery by the charger 16. As a result, it is possible to minimize the voltage drop of the storage battery and generate power for a long time by charging the storage battery once.

[0008]

According to the light, small and movable motor type generator of the present invention, the noise and the pollution are lower than those of the conventional engine type generator. Can greatly contribute to the reduction of CO2. Therefore, the demand is large and the industrial value seems to be high.

[Brief description of the drawings]

FIG. 1 is a sectional view showing the inside of a flywheel according to the present invention.

FIG. 2 is a side view of the generator.

FIG. 3 is a block diagram of a generator system.

[Explanation of symbols]

 1 Flywheel 2 Arm 3 Guide 4 Weight 5 Boss 6 Spring 11 Pulley 12 Generator 13 Small motor 14 Conversion transformer 15 Inverter 16 Charger 17 Storage battery 18 Switch

Claims (2)

[Claims] 1. A motor-driven generator equipped with a flywheel, characterized in that the center of gravity of the flywheel moves from the inner circumference to the outer circumference according to the number of rotations, and the centrifugal effect is gradually increased. 2. A small-power AC motor is rotated by converting DC of a storage battery into AC, and a small-power small motor is used to rotate a generator to extract AC power, and a part of the power is used for charging the storage battery. 2. The motor-type generator according to claim 1, wherein a decrease in storage battery voltage is minimized.