Mitsubishi Heavy Industries Limited

Mitsubishi Nichiyu Forklift Co., Ltd.

Yutaka Kubota

Takao Sakurai

Naoki Kobayashi

Toyotaka Hirao

Kensuke Futahashi

Shunsuke Kamei

Tomohiro Akaki

This power generation system (A) includes a plurality of power generation units (A,B,C, . . . ) which are provided in parallel, wherein each of the power generation units (A,B,C, . . . ) includes an expander () configured to be rotated by a working medium, a power generator () configured to generate power through rotation of the expander (), a rectifier (), a medium circulation system () configured to pump the working medium into the expander (), a relay () configured to interrupt power between the power generator () and an external power system (), an operating unit (A,B) configured to be operated when maintenance starts, and a relay driving unit () configured to interrupt power between the power generator () and the external power system () by the relay () when the operating unit (A,B) has been operated.

Power generation system

This power generation system is provided with a medium circuit, a circulation pump, an evaporator which evaporates a medium, an expander configured to be driven using the medium evaporated by the evaporator, a condenser configured to condense the medium discharged from the expander, a generator configured to be driven by the expander to generate power, a cooling system configured to cool the generator using the medium taken out from the medium circuit at a downstream side of the condenser, and a gas-liquid separator configured to separate the medium heated as a consequence of cooling the generator by the cooling system into gas and liquid phases, wherein the gas phase of the medium is flowed into the medium circuit at an upstream side of the condenser, and the liquid phase of the medium is flowed into the medium circuit at the downstream side of the condenser.

Power generation system, power generation method

A control method for an industrial vehicle can appropriately set a charge amount for a battery, and an industrial vehicle are provided. The control method includes an estimation step that estimates the charge rate of a battery by calculating the current that is charged to the battery and the current that is discharged from the battery; a charge amount determining step that determines the charge amount of the battery based on the estimated charge rate; a correction amount determining step that determines the charge power that is necessary for motors to generate the determined charge amount as a correction amount for the power that is supplied by the engine; and an addition step that adds the charge power to the supplied power of the engine that has been determined based on the state of the traveling and load-handling.

Control method for industrial vehicle and industrial vehicle

A hybrid forklift truck is provided with an engine, a battery-driven motor generator, and a battery control device that prevents excessive exhaustion or charging of the battery. The state of charge (SOC) of the battery is determined from the battery voltage and SOC when battery current is zero for at least a predetermined time period and from the battery voltage, current and SOC when discharge current is constant for at least a predetermined time period. SOC is revised whenever battery current is zero or constant for at least the predetermined time period, and SOC at any point of time in operation of the forklift truck is estimated by integrating battery current from the SOC revision and subtracting the integrated current from the revised SOC. Drive power of the engine and motor generator are allocated according to a relationship between permissible discharge and charge current and SOC of the battery.

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Nagoya, Japan

Yutaka Kubota