Motor-inverter drive system and method of use thereof
A drive system, inverter technology, applied in the direction of AC motor control, electric vehicles, control systems, etc., can solve the problems of difficult to detect disconnection faults, disconnection faults, detection errors, etc.
Active Publication Date: 2017-06-16
HYUNDAI MOBIS CO LTD
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Problems solved by technology
[0005] However, the disconnection fault detection function of the traditional motor-inverter drive system is not easy to detect a disconnection fault at a low speed, and when it is applicable to an in-wheel motor, if the motor speed changes suddenly , it is prone to detection errors and is identified as a disconnection fault
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[0032] The present invention is described in detail below in conjunction with accompanying drawing. When describing the present invention, repeated descriptions and specific descriptions of related known functions or structures will obscure the gist of the present invention, and such descriptions will be omitted. The above embodiments are only used to illustrate the technical solution of the present invention, rather than limit it, and intend to describe it more completely for those of ordinary skill in the art. The shape, size, etc. of each element in the drawings are exaggerated for clarity.
[0033] figure 2 It is a motor-inverter drive system of an embodiment of the present invention. according to figure 2 , The motor-inverter driving system of this embodiment includes a fault detection function processing part 130, an inverter operating state judgment part 110, an exception condition judgment part 150, a current control part 210, an induction part 230 and a fault pro...
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The present invention relates to a motor-inverter drive system and an application method thereof. The motor-inverter drive system includes: using three-phase current values to detect faults of disconnection of three-phase cables connecting the motor and the inverter. Detection function processing component; using the operating status of the current controller and PWM module for driving the motor and the fault status information of the current sensor to determine the detection of the three-phase cable disconnection fault implemented by the fault detection function processing component an inverter operating state judgment component whose function is activated; and using the command information of the phase current and the speed information of the motor to determine whether the inverter operating state judgment component is activated for the three-phase cable disconnection fault. Exception condition judgment component that detects whether the function keeps running. The invention can accurately diagnose the current system status and ensure the functional safety that meets the automotive functional safety standard ISO26262.
Description
technical field [0001] The present invention relates to a motor-inverter drive system and a method of using the same. Specifically, EV / HEV (Electric / Hyb [0002] Rid Electric Vehicle; electric motor-inverter drive system for electric vehicle and hybrid vehicle) and its application method. Background technique [0003] The motor-inverter drive system for hybrid and electric vehicles operates as follows when detecting the failure of the three-phase cable connected between the motor and the inverter. When the magnitude of the vector of is larger than a specific value, the disconnection fault detection function operates, otherwise, the disconnection fault detection function is initialized. [0004] Such as figure 1 As shown, the disconnection fault detection is to confirm that the cable disconnection fault occurs when the magnitude of the vector of the command current reaches a certain value, and the magnitude of the phase current does not exceed the fault detection current r...
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IPC IPC(8): H02P23/00G01R31/02
CPCY02T10/72Y02T10/70H02H5/10B60L50/50
Inventor 金亨修
Owner HYUNDAI MOBIS CO LTD