Hybrid type working machine
First Claim
1. A hybrid type drive apparatus having a generator driven by an engine and an output control unit for controlling the quantity of power supplied to a motor using AC power outputted from the generator as power supply source, comprising:
- a switching circuit for switching each phase output of the generator;
wherein the output control unit includes;
a synchronous reference computing means for computing a synchronous standard synchronous with each phase output of the generator based on the output frequency of the generator;
a speed detecting means for detecting the rotation speed of the motor; and
a computing means for determining a speed target value by compensating for a set target value based on a rotation speed detected by the speed detecting means, wherein the output control unit controls the switching circuit to switch on and off each phase output of the generator based on a conduction angle for controlling the rotation speed detected by the speed detecting means to the speed target value and the synchronous standard.
1 Assignment
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Accused Products
Abstract
Simplifying the controller of hybrid type drive unit. The output of a generator driven by engine is connected directly to a motor 7 through a converter or switching circuit 10 without being charged on any battery. The output of each phase of the generator is inputted to the converter 10. A timing controller 126 controls the conduction phase of a thyristor bridge 101 in the converter 10 so as to adjust the quantity of output power. A synchronous standard for phase control is formed based on output wave of an auxiliary winding 26 of the generator. A voltage detector 124 detects an applied voltage on the motor 7 as a motor rotation speed and the conduction angle is increased or decreased so as to maintain a detected voltage at a target value.
55 Citations
11 Claims
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1. A hybrid type drive apparatus having a generator driven by an engine and an output control unit for controlling the quantity of power supplied to a motor using AC power outputted from the generator as power supply source, comprising:
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a switching circuit for switching each phase output of the generator;
wherein the output control unit includes;
a synchronous reference computing means for computing a synchronous standard synchronous with each phase output of the generator based on the output frequency of the generator;
a speed detecting means for detecting the rotation speed of the motor; and
a computing means for determining a speed target value by compensating for a set target value based on a rotation speed detected by the speed detecting means, wherein the output control unit controls the switching circuit to switch on and off each phase output of the generator based on a conduction angle for controlling the rotation speed detected by the speed detecting means to the speed target value and the synchronous standard. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification