Power output device
First Claim
1. A power output device, comprising:
- a motor designed to be driven to rotate using multiple phase AC power;
an inverter circuit supplying multiple phase AC power to the motor while switching a plurality of switching elements;
a first power source connected to a positive bus bar and a negative bus bar of the inverter circuit;
a second power source connected to the positive bus bar or the negative bus bar of the inverter circuit and to a neutral point of the motor; and
a controller for controlling switching of the plurality of switching elements of the inverter circuit such that a ratio between positive and negative voltages relative to a potential at the neutral point of the motor, concerning respective phases of the multiple phase AC power to be supplied to the motor, become a predetermined ratio based on a voltage of the first power source and a voltage of the second power source.
1 Assignment
0 Petitions
Accused Products
Abstract
When the absolute values of the negative voltage V− and the positive voltage V+ of a rectangular wave to be applied to the three phase coils of the motor driven using a rectangular-waved voltage are different, time T1 and time T2 for the rectangular wave are adjusted such that the area A representing the absolute value of a time integration value of the negative voltage V− and the area B representing the absolute value of a time integration value of the positive voltage V+ becomes equal to each other. With this adjustment, the average voltage of the rectangular wave becomes of value 0, so that a DC component current is prevented from flowing into the three phase coils of the motor.
-
Citations
20 Claims
-
1. A power output device, comprising:
-
a motor designed to be driven to rotate using multiple phase AC power;
an inverter circuit supplying multiple phase AC power to the motor while switching a plurality of switching elements;
a first power source connected to a positive bus bar and a negative bus bar of the inverter circuit;
a second power source connected to the positive bus bar or the negative bus bar of the inverter circuit and to a neutral point of the motor; and
a controller for controlling switching of the plurality of switching elements of the inverter circuit such that a ratio between positive and negative voltages relative to a potential at the neutral point of the motor, concerning respective phases of the multiple phase AC power to be supplied to the motor, become a predetermined ratio based on a voltage of the first power source and a voltage of the second power source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A power output device, comprising:
-
a motor designed to be driven to rotate using multiple phase AC power;
an inverter circuit supplying multiple phase AC power to the motor while switching a plurality of switching elements;
a first power source connected to a positive bus bar of the inverter circuit and to a neutral point of the motor;
a second power source connected to the negative bus bar of the inverter circuit and to a neutral point of the motor; and
a controller for controlling switching of the plurality of switching elements of the inverter circuit such that a ratio between positive and negative voltages relative to a potential at the neutral point of the motor, concerning respective phases of the multiple phase AC power to be supplied to the motor, become a predetermined ratio based on a voltage of the first power source and a voltage of the second power source. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification