WO2003065566A1

WO2003065566A1 - Power generation control device

Info

Publication number: WO2003065566A1
Application number: PCT/JP2003/000505
Authority: WO
Inventors: Masashi Suzuki
Original assignee: Yamaha Hatsudoki Kabushiki Kaisha
Priority date: 2002-01-30
Filing date: 2003-01-22
Publication date: 2003-08-07
Also published as: TWI273048B; TW200302788A; JPWO2003065566A1

Abstract

A power generation control device free from deterioration in operating feeling and riding feeling and from feeling of physical disorder when a power generator is powered on/off according to an engine load. The power generation control device comprising a 3-phase ac generator (1) coupled with an engine crank shaft, a battery (4) coupled with the generator (1) via a regulator circuit (3), and a control circuit (2) for powering on/off the generator according to an engine load, wherein the above control circuit (2) is gradually changed over from an on-state to an off-state or vice versa when the on/off of the generator (1) is switched.

Description

Technical field

The present invention relates to a power generation control device applied to an automobile / motorcycle engine. Light

Fine

Background art

A generator such as an automobile engine has a mouth consisting of a magnet connected to the crankshaft of the engine around a three-phase coil and three-phase AC power is generated by rotation of the mouth. . This generator is connected to the battery via a regulator for obtaining a rectifying action and a constant voltage. Since such a generator is attached to the crankshaft of the engine, it is a load on the engine in the power generation state. Therefore, in the case of operation requiring a high load such as acceleration or running on a hill, it is possible to stop the generator and use the energy corresponding to the load as travel energy effectively to substantially increase the engine output. Considered by the applicant.

However, if the generator is simply switched 〇N / 0FF in response to an increase or decrease in the engine load during traveling, the load fluctuation on the engine becomes sharp, and the driving sensation and the riding sensation deteriorate, resulting in a sense of incongruity.

The present invention has been made in consideration of the conventional technology described above, and has an object to provide a power generation control device that does not cause a deterioration in driving sensation or riding sensation or a sense of incongruity when the generator is turned off according to an engine load. I do. Disclosure of the invention In order to achieve the above object, according to the present invention, a three-phase AC generator connected to a crankshaft of an engine, a battery connected to the generator via a reguille circuit, A power generation control device comprising a control circuit for turning on / off the generator, wherein the control circuit gradually turns from ON to 0FF when switching ON / OFF of the generator or vice versa. O Provide a power generation control device characterized by shifting to

According to this configuration, when the generator is switched from 〇N to 0FF or vice versa, the switching is performed gradually, so that a sudden load change is avoided, and the driving sensation and the riding sensation are not deteriorated or uncomfortable. When accelerating or running uphill, smooth high-output operation can be performed according to the load condition.

In a preferred configuration example, among the three phases of the three-phase generator, only one phase is initially set to 0 F F and then the second phase is set to O F F or vice versa.

According to this configuration, a sudden change in load can be achieved by first switching only one phase from 〇N to 0FF or vice versa without switching all three phases at once, and then switching the remaining phases. Can be avoided.

Another preferred configuration example is characterized in that a zero point of the AC waveform from the generator is detected, a predetermined phase width is turned off from the zero point, and the phase width to be turned off is gradually lengthened or shortened. .

According to this configuration, the ONZOFF switching is gradually performed by the phase control of the AC generator. That is, by cutting the phase of a predetermined width from the zero point of the AC waveform of the three-phase generator and setting the output to 0, the output of the generator decreases, and the width of the phase to be cut is gradually lengthened and the whole is cut. By setting the phase to 0, rapid load fluctuation can be avoided.

In yet another preferred configuration, a half cycle of the AC waveform from the generator is simply It is characterized by gradually increasing or decreasing the ratio of the number of cycles of 0 N to the number of cycles of 0 FF.

According to this configuration, by setting an arbitrary cycle of the AC waveform of the three-phase generator to 0 FF, the generator output decreases, and the number of cycles to be turned off is gradually increased to turn off the entire cycle. By doing so, rapid load fluctuations can be avoided. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a configuration diagram of a generator according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of the phase control according to the embodiment of the present invention.

FIG. 3 is an explanatory diagram of 0N / 0FF control according to another embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 is a configuration diagram of a power generation control device according to an embodiment of the present invention.

The three-phase AC generator 1 is mounted on an end of a crankshaft of an engine (not shown). The figure shows the three-phase coils U, V, and W on the station side, and the output terminals of these three-phase coils are connected to the regulator 3 via the on / off control circuit 2.

^ o

The Regyu-Ray 3 is a circuit that has a rectifying function to convert AC to DC and a constant voltage function to keep the output at a constant voltage. The AC power generated by the generator 1 is rectified through the regulator 3 to charge the battery 4 and output to the outside.

The ON / OFF control circuit 2 controls ON / OFF of the output of the generator 1 in accordance with the engine load state from an engine load detecting means (not shown). When the engine load is large, such as when accelerating or traveling uphill, the generator output is set to 0 FF and the engine Reduce the load on As a result, the engine output corresponding to the load generated by the power generation of the generator is increased.

Regarding the detection of the engine load, the load on the engine can be detected by detecting the throttle opening, the engine speed, or the operating state using an acceleration sensor, a torque sensor, or the like.

In the present embodiment, the on / off control circuit 2 is configured to gradually shift from the ON state to the 0 FF state or vice versa at the time of on / off switching.

As a method of gradually switching on and off in this way, when switching from 0 N to 0 FF, first turn off only one of the three-phase U, V, and W wirings, and then turn off the remaining two wires. Set one or all of the phases to 0FF. By thus turning off the three-phase coils in order with a time lag, rapid output fluctuation due to switching is prevented.

Switching from OFF to ON is performed in the reverse of the above, and the ON is switched to ON with a phase difference one phase at a time.

As another method of on / off switching, it is possible to gradually switch by phase control. In this method, as shown in FIG. 2, an AC waveform from a generator is extracted, its zero point is detected, and a phase of a predetermined width (shaded portion in the figure) is cut from the zero point to output zero. . By gradually increasing the phase width to be cut stepwise or continuously, the entire output is set to 0 and the output is shifted to 0FF.

When the generator in the 0 F F state is shifted to ON by this phase control, the phase width to be cut is gradually shortened and the original AC waveform is restored, contrary to the above.

FIG. 3 shows another method of ON / OFF switching.

In this example, as shown by the diagonal lines in the figure, By turning off the power, the generator output decreases, and the number of cycles to turn off is gradually increased to set the entire cycle to OFF. In this case, the ON / OFF switching can be performed by gradually increasing or decreasing the ratio of the number of ON cycles to the number of OFF cycles in units of a half cycle of the AC waveform from the generator. Industrial applicability

As described above, according to the present invention, when the generator is switched from ON to OFF or vice versa, the generator is gradually switched, so that a sudden load change is avoided, and the driving sensation and riding sensation are deteriorated and uncomfortable. Without such a problem, smooth high-power operation can be performed according to the load condition during acceleration or running on a slope.

Claims

The scope of the claims

1. A three-phase AC generator connected to the crankshaft of the engine, a battery connected to the generator via a regulator circuit, and turning on / off the generator according to the load of the engine. A power generation control device provided with a control circuit,

The power generation control device, wherein the control circuit gradually shifts from the 0N state to the 0FF state or vice versa when switching ON / OFF of the generator.

2. The method according to claim 1, wherein only one of the three phases of the three-phase generator is turned off first, and then the second phase is turned off or vice versa.

3. The zero point of the AC waveform from the generator is detected, a predetermined phase width is turned off from the zero point, and the phase width to be turned off is gradually increased or shortened. Power generation control device.

4. The power generation control device according to claim 1, wherein the ratio of the number of ON cycles to the number of OFF cycles is gradually increased or decreased in units of a half cycle of an AC waveform from the generator.