Power supply system and power supply method
First Claim
1. A power supply system, provided with a high voltage system and a low voltage system, comprising:
- an a.c. motor that is a load on the high voltage system and is driven by a high voltage power source;
an inverter for controlling supply of power to the a.c. motor;
a low voltage system supply path for applying a neutral point voltage of the a.c. motor to a load of the low voltage system; and
a load of the low voltage system for connecting to the low voltage system supply path, wherein a voltage ratio of the low voltage system to the high voltage system is set to from 1;
2 to 1;
4.
1 Assignment
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Accused Products
Abstract
Power from a high voltage battery (10) (for example 36V) is supplied through an inverter (12) to a motor generator (14). A low voltage battery (20) (for example 12V) is connected through a reactor (18) to the neutral point of the motor generator (14). A voltage ratio of the low voltage battery (20) to the high voltage battery (10) is preferably from 1:2 to 1:4. In order to set the neutral point voltage to a desired charging voltage into the low voltage battery (20), the inverter (12) is controlled so as to follow a current distortion phenomenon. In this way, in a dual-power source system with a voltage ratio of a low voltage battery (20) to a high voltage battery (10) between 1:2 and 1:4, voltage switching means for use in charging a charge voltage of a high voltage side into a low voltage source can be implemented at low cost.
32 Citations
15 Claims
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1. A power supply system, provided with a high voltage system and a low voltage system, comprising:
-
an a.c. motor that is a load on the high voltage system and is driven by a high voltage power source;
an inverter for controlling supply of power to the a.c. motor;
a low voltage system supply path for applying a neutral point voltage of the a.c. motor to a load of the low voltage system; and
a load of the low voltage system for connecting to the low voltage system supply path, wherein a voltage ratio of the low voltage system to the high voltage system is set to from 1;
2 to 1;
4. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A power supply method, in system having an a. c. motor driven by a high voltage power source, and an inverter for controlling supply of power to the a.c. motor, provided with a high voltage system and a low voltage system for connecting a neutral point of the a.c. motor to a load of the low voltage system as a low voltage system power source, wherein
a voltage of the low voltage system is made a specified value of between ½ - to ¼
of the voltage of the high voltage system, andthe inverter is controlled so that a current distortion phenomenon is caused in the generated voltage waveform at least at the time of motor generation. - View Dependent Claims (13, 14, 15)
- to ¼
Specification