Honda Motor Co., Ltd.

Wataru Matsuyama

Minoru Maedako

Tetsuya Matsuhisa

Kenji Shibata

Takafumi Kotani

Kana Miyagi

Makoto Yamanaka

Hiroya Takahashi

Takayuki Enomoto

Yuichi Onoe

Masahiro Takahashi

In a generator including an engine, a rotating electric machine, and a cooling fan that rotates integrally with a rotor of the rotating electric machine, the cooling fan includes a plurality of fans disposed at an interval in an axial direction of the fan, and a cylindrical body that extends in the axial direction of the cooling fan with a cylindrical cross section in an inner peripheral space of an upstream fan and is disposed more on the upstream side than a downstream fan.

Portable generator having axially spaced cooling fans

A rotor has an opposing surface opposed to a stator, the opposing surface has flat surfaces extending in a tangential direction of a circle centered on an axial center of the rotor at a predetermined angular interval centered on the axial center, and a magnet is disposed on this flat surface.

Rotating electrical machine

A working machine is provided which can suppress the adhesion of rain water, snow, and melting snow to an electrical connecting portion between a battery containing portion side and a battery side. An electrically driven snowplow as a working machine includes a battery pack incorporating a battery, a battery containing portion disposed so as to allow the battery pack to be inserted and removed in a direction inclined from a vertical direction, and an electrode portion configured to be connected with an output terminal of a battery disposed on an upper surface of the battery containing portion.

Working machine

A generator system, including first and second generators each having an inverter circuit outputting AC, a connection circuit connecting the generators through a power line, a master-slave determining unit determining one of the generators as a master generator, and to determine other of the generators as a slave generator, a data acquiring unit acquiring an output data of the master generator, and a synchronization controlling unit controlling switching operation of the inverter circuit of the slave generator based on the output data of the master generator to synchronize an output data of the slave generator with the output data of the master generator, wherein the master-slave determining unit determines one of the generators that starts earlier as the master generator, and when the generators start simultaneously, to determine one of the generators as the master generator in accordance with a predefined rule.

Generator system

A power generator system, including a first generator and a second generator, a detector detecting a power of the first generator, a determinator determining whether a parallel operation of the first generator and the second generator is necessary based on a detection value detected by the detector when the first generator is operating and the second generator remains unstarted, a power supply unit supplying a starting power to the second generator to start the second generator when it is determined that the parallel operation is necessary, and a generator controller controlling operation of the second generator so as to operate synchronously in parallel with the first generator after the second generator is started.

Power generator system

An engine-generator starting apparatus a three-phase winding equipped with a generating unit that rotates relative to rotation of a crankshaft of an engine, and an electronic control unit that controls supply of electric current the three-phase winding to rotate the crankshaft and start the engine. In the apparatus, the electronic control unit controls to supply first current to the three-phase winding to make the engine crankshaft of rotate reverse, the first current is of a level for stopping the piston connected to the crankshaft at a position in a compression stroke. Then it controls to supply second current (that is greater than the first current) to the three-phase winding to make the crankshaft of the engine rotate forward when a predetermined time period has elapsed, and control to ignite fuel supplied to the engine after the second current is supplied to the three-phase winding.

Engine-generator starting apparatus

An engine generator, including an engine having a piston reciprocating inside a cylinder, a generator unit having a three-phase winding, driven by the engine to generate power and operating as an engine starter motor during engine starting, a power converter circuit connected to the generator unit, a battery supplying power to the generator unit through the power converter circuit during engine starting, an engine speed detection unit detecting an engine speed, a connection switching unit switching a connection configuration of the winding to one of a wye-connection and a delta-connection, and a connection switching control unit controlling the connection switching unit to switch the connection configuration to the wye-connection when the engine speed is lower than a predetermined engine speed, and to switch the connection configuration to the delta-connection when the engine speed is equal to or higher than the predetermined engine speed, during engine starting.

Engine generator

A power generator system, including a remaining fuel detector detecting a remaining fuel amount of each of the first generator and the second generator, an operable time calculator calculating a remaining operable time of the each of the first generator and the second generator based on the remaining fuel amount detected by the remaining fuel detector, and a signal output unit outputting a control signal for adjusting outputs of the first generator and second generator to an actuator so that the remaining operable time of the first generator and the remaining operable time of the second generator calculated by the operable time calculator is equalized while keeping a total power of the first generator and the second generator constant.

An engine generator, including a general-purpose engine, a generator unit driven by the engine to generate electric power and capable of operating as an engine starter motor during engine starting, a case housing the engine and the generator unit, a battery detachably attached to the case, an inverter unit connected to the generator unit, and a power supply circuit interconnecting the battery attached to the case and the inverter unit and supplying power of the battery through the inverter unit to the generator unit.

An engine generator, including a general purpose engine, an engine speed of the engine being variably controlled, a generator unit having a three-phase winding and driven by the engine to generate power, an inverter unit converting AC output from the generator unit to AC of a predetermined frequency to output to a load, a connection switching unit switching a connection configuration of the winding to one of a wye-connection and a delta-connection, a load detection unit detecting a size of the load, and a connection switching control unit controlling the connection switching unit to switch the connection configuration to the wye-connection when the size of the load is equal to or lower than a predetermined value, and to switch the connection configuration to the delta-connection when the size of the load is higher than the predetermined value.

Engine generator comprising an electrical load-dependent delta to WYE switching unit

An engine generator, including a generator unit driven by the engine, a first power converter circuit, a capacitor, a second power converter circuit, a smoothing circuit, battery and a control unit. The control unit controls operation of the switching elements of the second power converter circuit so as to form a boosting circuit by the battery, the coil of the smoothing circuit, the switching element and the diode of the second power converter circuit, and the capacitor at starting of the engine.

Engine generator with a boosting circuit for starting an engine

A generator system, including first and second generators, a connection circuit connecting output lines of the first and second generators to each other and connecting neutral lines of the first and second generators to the ground, a switch command unit outputting commands to switch a connection mode of the first and second generators between parallel and series connection modes, a circuit switch switching a connection mode of the connection circuit in response to the commands, a data acquiring unit acquiring a waveform data of the first generator when the second generator is operated after the first generator is operated, and a control unit controlling the second generator to synchronize frequency and phase of waveforms of the first and second generators in the parallel connection mode and controlling the second generator to synchronize frequency and shift phase by 180 degree in the series connection mode.

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Wako, Japan

Wataru Matsuyama