Honda Motor Co., Ltd.

Yasuhiro Nakada

Minoru Maedako

Toshio Inoue

Kenji Shibata

Kenji Kamimura

Shinsaku Nakayama

Tetsuya Matsuhisa

Yasunori Yamamoto

Takayuki Enomoto

Takeyoshi Yamamoto

Wataru Fukumoto

Provided is an electric moving machine including: a plurality of wheels provided to a vehicle body; traveling motors each provided for the corresponding wheel and configured to drive the corresponding wheel; and a driving-unit control device configured to control driving of each of the traveling motors, in which the driving-unit control device, in a case in which an error is detected in one or some of the traveling motors during traveling, stops the traveling motors with an error detected, determines a combination of traveling motors to improve a balance of driving force in a traveling direction which broke due to the stopping of the traveling motors, and controls, based on the combination, driving of each of the traveling motors with no error detected.

Electric moving machine

An electric device includes a first receptacle to which a first plug is connected, a second receptacle to which a second plug is connected, and a cover member configured to open/close the second receptacle. In a state in which the first plug is connected to the first receptacle, opening of the cover member is restricted by interference between the first plug and the cover member. In a state in which the second plug is connected to the second receptacle, connection of the first plug to the first receptacle is restricted by interference between the first plug and the cover member.

Electric device and wiring cable

The present invention provides a batteryless engine system comprising a first detection unit configured to detect a rotation speed of an internal combustion engine, a second detection unit configured to detect a voltage of a capacitor in which charges are accumulated, and a control unit operated by a power supplied from a generator and configured to control supply of a power from the generator to an injector, a fuel pump, and an ignition device based on the rotation speed detected by the first detection unit and the voltage detected by the second detection unit in a starting period of the internal combustion engine by a recoil starter.

Engine system

A rising temperature of components of an electric generator is restrained without deteriorating the quality of electricity output and the user-friendliness of the electric generator. AVR () and a temperature detecting means () is provided in a generator housing. While the detected temperature is greater than the limitation starting temperature, the output voltage is decreased by decreasing the control target value (for the AVR ()) in accordance with the temperature. A range between the power generation stopping temperature as an upper-limit temperature of a generator component and the limitation starting temperature set to be a lower than the power generation stopping temperature is defined as a voltage droop range. In the voltage droop range, the control target value is decreased in accordance with a target voltage base value preset in a relationship with the temperature so that the decrease degree becomes greater in proportion to a rising temperature.

Output control device of electric generator

In a self-excited generatorincluding an automatic voltage regulator (AVR), a condensive load protection device includes: a field current control driverwhich is connected to the field windingin series and controlled to be ON/OFF by a drive circuitof the AVRto supply a field current to the field winding; and a condensive load protecting rotor short-circuit driverwhich is connected in parallel to the field winding, and supplies a short-circuit current to the field windingby being turned ON, and a bootstrap circuitis connected as a drive power supply of the field current control driver and the condensive load protecting rotor short-circuit driver, and the bootstrap circuitincludes a capacitance portionin which charges are accumulated when the field current control driveris ON.

Condensive load protection device of self-excited generator

A generator () includes a generator winding () and an excitation winding (), and a field winding (). To converge an output voltage of the generator winding () to a target, a field current is varied by increasing/decreasing an energization duty ratio of a switching device () connected to the field winding (). In a duty ratio zero determination unit () and a duty ratio zero continuation determination unit (), when an output duty ratio continues for a predetermined time with duty ratio zero, a duty ratio increase amount restriction unit () restricts an upper limit of the duty ratio to a predetermined upper limit when the field current increases. A duty ratio restriction unit () for restricting the duty ratio by a maximum value determined based on a voltage of a smoothing capacitor () in place of the determination of the duty ratio being zero may be provided.

Output control apparatus of generator

When a distortion of an output waveform of an alternating-current generator is improved, an output voltage control apparatus of a generator, which has versatility, is obtained. An output voltage control apparatus of a generator (), including a generator winding () and an excitation winding () wound around a stator side, a field winding () wound around a rotor (), and a rectifier () for rectifying a current generated by the excitation winding () and supplying the rectified current to the field winding (), the output voltage control apparatus includes a field current drive means () for comparing an output voltage generated to the generator winding () with a reference wave whose distortion ratio is 0% and flowing a field current to the field winding () by adjusting a drive timing of a PWM signal output by a drive unit () based on a result of the comparison.

Output voltage control apparatus of generator

Provided is a connection mechanism which connects a switch portionof a generatorto an assembling terminalof a junction boxhaving plural female terminalsconnected to a generator circuitvia a relay connector, wherein the relay connectorforms a defining wallinside a cylindrical body so that a fitting portionis provided at one side of the defining wallso as to be fitted to the switch portion, and plural relay terminals are attached to the other side so as to be connected to the plural female terminals, and wherein holesare provided in the defining wall so as to respectively face the front ends of the relay terminals. Accordingly, the switch portionand the assembling terminalare integrally and directly connected to each other via the relay connector

Electrical connection mechanism for connecting an electrical part to a junction box

Output waveform of the generator is improved through stabilization of field current by removing flywheel diode used to be required for automatic voltage regulator. Output electric current of excitation windingis rectified by rectifierand is supplied to field windingof rotor. Impedance adjustment circuitis provided to circuit where field current flows. Target electric current determination unitdetermines target electric current (target field current) used to control output voltage of power generation windingto the reference voltage. Impedance adjustment circuitincreases or decreases the impedance of field current circuit so that the field current detected by electric current detectorconverges with target electric current.

The present invention provides a solar cell that can be utilized as a stable electric power source for cloudy weather. An output voltage Vof the solar cellis lowered by a DC-DC converter. When a battery Vis charged with an output of the converter, the converteris stopped and the power of only the battery Vis supplied to a low-voltage inverter circuit. The electric power supplied from the converteris increased by boosting the output voltage of the converteras well as starting to supply electric power from the battery V. While the electric power of the converteris increased, the performance of the solar cellis judged. When the performance is decreased, the output voltage from the converteris lowered and the amount of electric power supplied from the batteryis increased relatively.

Growing community of inventors

Saitama, Japan

Yasuhiro Nakada