METHODS, SYSTEMS AND APPARATUS FOR CONTROLLING OPERATION OF TWO ALTERNATING CURRENT (AC) MACHINES
First Claim
1. A system for controlling two alternating current (AC) machines, the system comprising:
- a five-phase PWM inverter module coupled to the two AC machines and being designed to generate sinusoidal voltages for the two AC machines;
a DC input voltage source that provides a DC input voltage;
a boost converter, coupled to the five-phase PWM inverter module and the DC input voltage source, and being designed to supply a new DC input voltage to the five-phase PWM inverter module having a value that is greater than or equal to a value of the DC input voltage; and
a voltage boost command control module designed to generate a boost command signal that controls the boost converter such that the boost converter generates the new DC input voltage in response to the boost command signal, wherein the boost command signal drives the new DC input voltage generated by the boost converter to a value greater than the DC input voltage when the two AC machines require additional voltage that exceeds the DC input voltage required to meet a combined target mechanical power required by the two AC machines.
9 Assignments
0 Petitions
Accused Products
Abstract
A system is provided for controlling two AC machines. The system comprises a DC input voltage source that provides a DC input voltage, a voltage boost command control module (VBCCM), a five-phase PWM inverter module coupled to the two AC machines, and a boost converter coupled to the inverter module and the DC input voltage source. The boost converter is designed to supply a new DC input voltage to the inverter module having a value that is greater than or equal to a value of the DC input voltage. The VBCCM generates a boost command signal (BCS) based on modulation indexes from the two AC machines. The BCS controls the boost converter such that the boost converter generates the new DC input voltage in response to the BCS. When the two AC machines require additional voltage that exceeds the DC input voltage required to meet a combined target mechanical power required by the two AC machines, the BCS controls the boost converter to drive the new DC input voltage generated by the boost converter to a value greater than the DC input voltage.
-
Citations
20 Claims
-
1. A system for controlling two alternating current (AC) machines, the system comprising:
-
a five-phase PWM inverter module coupled to the two AC machines and being designed to generate sinusoidal voltages for the two AC machines; a DC input voltage source that provides a DC input voltage; a boost converter, coupled to the five-phase PWM inverter module and the DC input voltage source, and being designed to supply a new DC input voltage to the five-phase PWM inverter module having a value that is greater than or equal to a value of the DC input voltage; and a voltage boost command control module designed to generate a boost command signal that controls the boost converter such that the boost converter generates the new DC input voltage in response to the boost command signal, wherein the boost command signal drives the new DC input voltage generated by the boost converter to a value greater than the DC input voltage when the two AC machines require additional voltage that exceeds the DC input voltage required to meet a combined target mechanical power required by the two AC machines. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A system, comprising:
-
two alternating current (AC) machines that require a combined target mechanical power that varies during operation; a five-phase PWM inverter module coupled to the two AC machines and being designed to generate sinusoidal voltage waveforms for the two AC machines at varying speeds; a DC input voltage source that provides a DC input voltage; a boost converter, coupled to the five-phase PWM inverter module and the DC input voltage source, and being designed to supply a new DC input voltage to the five-phase PWM inverter module having a value that is greater than or equal to a value of the DC input voltage, wherein the five-phase PWM inverter module generates the sinusoidal voltage waveforms that drive the two AC machines based on the new DC input voltage; and a voltage boost command control module designed to generate a boost command signal that controls the boost converter. - View Dependent Claims (17, 18, 19, 20)
-
Specification