Hybrid type working machine
First Claim
1. A hybrid type drive apparatus, comprising:
- a magnet rotor type AC generator driven by an engine;
a motor driven by power supplied from the AC generator;
an output control unit for controlling the quantity of power supplied to said motor from said AC generator;
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 variation of the output frequency of the generator;
a speed detecting means for detecting the rotation speed of the motor; and
a speed target value computing means for determining a speed target value of the motor based on a difference between a predetermined target value and a rotation speed detected by the speed detecting means;
a conduction angle computing means for determining a conduction angle of switching elements formed of the switching circuit for controlling the rotation speed detected by the speed detecting means to the speed target value determined by the speed target value computing means; and
a means for switching an output of each phase of the generator by driving the switching elements of the switching circuit by the conduction angle according to the synchronous standard.
1 Assignment
0 Petitions
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.
68 Citations
11 Claims
-
1. A hybrid type drive apparatus, comprising:
-
a magnet rotor type AC generator driven by an engine; a motor driven by power supplied from the AC generator; an output control unit for controlling the quantity of power supplied to said motor from said AC generator; 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 variation of the output frequency of the generator; a speed detecting means for detecting the rotation speed of the motor; and a speed target value computing means for determining a speed target value of the motor based on a difference between a predetermined target value and a rotation speed detected by the speed detecting means; a conduction angle computing means for determining a conduction angle of switching elements formed of the switching circuit for controlling the rotation speed detected by the speed detecting means to the speed target value determined by the speed target value computing means; and a means for switching an output of each phase of the generator by driving the switching elements of the switching circuit by the conduction angle according to the synchronous standard. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
Specification