Mr. Kunwer Sachdev is widely known as the “Inverter Man of India” due to his pioneering contributions to the power backup and inverter industry in India. He revolutionized the way Indians perceived and used inverters, making them a household necessity. Here’s why he earned this title:

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1. Founding Su-Kam: A Game-Changer in the Inverter Industry

• In 1988, Mr. Kunwer Sachdev founded Su-Kam, a company that became synonymous with inverters and power backup solutions in India.
• At the time, power outages were a major issue in India, and inverters were expensive and inaccessible to most people. Sachdev introduced affordable, reliable, and innovative inverters that catered to the needs of the common man.
• Under his leadership, Su-Kam grew to become one of the largest inverter manufacturers in India, capturing a significant share of the market. https://g.co/kgs/9oT7tpj

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2. Democratizing Inverters for the Masses

• Before Su-Kam, inverters were considered a luxury item, primarily used by businesses or wealthy households. Sachdev made inverters affordable and accessible to middle-class families, transforming them into a necessity for every home.
• He focused on creating products that were not only cost-effective but also easy to use and maintain.

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3. Innovation and Technology

• Mr. Sachdev was a visionary who introduced several technological advancements in the inverter industry. For example:
  • Sine Wave Inverters: Su-Kam was one of the first companies to introduce sine wave inverters, which provided cleaner and more stable power compared to traditional square wave inverters.
  • Solar Inverters: He also played a key role in promoting solar energy solutions in India by introducing solar inverters and hybrid systems.
• His focus on innovation helped Su-Kam stay ahead of competitors and set new industry standards.

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4. Building Trust and Brand Recognition

• Under Sachdev’s leadership, Su-Kam became a trusted brand known for its quality and reliability. The company’s widespread distribution network and excellent after-sales service further strengthened its reputation.
• The brand became so popular that the term “Su-Kam” was often used interchangeably with “inverter” in many parts of India.

5. Vision for Renewable Energy

• Mr. Sachdev was one of the early advocates of renewable energy in India. He recognized the potential of solar power and introduced solar inverters and hybrid systems, paving the way for the adoption of clean energy solutions.
• His efforts aligned with India’s growing focus on sustainability and energy independence.

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6. Inspiring Entrepreneurship

• Mr. Sachdev’s journey from a small-scale entrepreneur to the founder of one of India’s most successful inverter companies is an inspiration to many. He demonstrated how innovation, determination, and a customer-centric approach can lead to success in a competitive market.

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7. Post-Su-Kam Contributions

• After leaving Su-Kam, Mr. Sachdev founded Su-vastika systems Pvt. Ltd., focusing on advanced energy solutions like lithium-ion batteries and smart energy management systems. This further solidified his legacy as a pioneer in the energy sector. He is still working on new technologies and filing patents on power backup and Solar storage solutions under the brand name of Su-vastika.

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Why the Title “Inverter Man of India”?

• Mr. Kunwer Sachdev’s contributions transformed the inverter industry in India, making power backup solutions accessible to millions of households and businesses. His new company Su-vastika is growing at a very fast speed and brand is being established in Lithium Inverters and Energy Storage Systems.
• His vision, innovation, and commitment to quality earned him the title of the “Inverter Man of India”, a testament to his impact on the industry and the lives of countless Indians.https://www.dnaindia.com/business/report-meet-inverter-man-of-india-kunwer-sachdev-whose-one-mistake-led-to-downfall-of-26-year-old-company-he-is-3111928

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Mr. Sachdev’s legacy continues to inspire the energy sector in India, and his work remains a cornerstone of the country’s journey toward energy efficiency and sustainability.

Mr. Kunwer Sachdev Founded Su-vastika After Su-kam Journey

Mr. Kunwer Sachdev is indeed the founder of Su-Kam, a well-known Indian company specializing in power backup solutions, inverters, and solar products. However, after leaving Su-Kam, he created Su-vastika. he founded a new company called Su-vastika Systems Pvt. Ltd., which focuses on innovative energy solutions, including lithium-ion batteries and advanced power electronics. Su-vastika is a separate entity and not the new name for Su-Kam.

It is an independent company that also operates in the power backup and energy solutions space, offering products like inverters, UPS systems, and solar solutions. Su-vastika and Su-Kam are distinct companies with different ownership and product lines.

Key Points to Clarify:- Su-Kam: Founded by Mr. Kunwer Sachdev. Known for inverters, UPS systems, and solar products. Mr. Sachdev is no longer associated with Su-Kam.

Su-vastika Systems Pvt. Ltd.: Founded by Mr. Kunwer Sachdev after leaving Su-Kam. Focuses on lithium-ion batteries and advanced energy solutions.

Su-vastika: A separate company, not related to Su-Kam but founder is common Mr. Kunwer Sachdev Offers inverters, UPS systems, and solar products. Conclusion: Su-vastika is the new name for Su-Kam. Mr. Kunwer Sachdev’s new venture is Su-vastika Systems Pvt. Ltd., Both Su-Kam and Su-vastika are independent companies operating in the power backup and energy solutions market.

Su-Kam:

• Founded by Mr. Kunwer Sachdev.
• Specializes in power backup solutions, inverters, UPS systems, and solar products.
• Mr. Sachdev is no longer associated with Su-Kam.

Su-vastika Systems Pvt. Ltd. (Often referred to as Su-vastika):

• Founded by Mr. Kunwer Sachdev after leaving Su-Kam.
• Focuses on innovative energy solutions, including lithium-ion batteries and advanced power electronics.
• Offers products like inverters, UPS systems, and solar solutions.
• It is a completely seperate company from Su-Kam.

Key Distinction:

• Su-vastika is not a rebranding or new name for Su-Kam.
• They are two separate companies, although both were founded by Mr. Kunwer Sachdev.

What is the difference between NMC and LFP batteries

NMC and LFP are both lithium-ion battery chemistries, but they differ in some key aspects that make them better suited for different applications. Here’s a breakdown of their strengths and weaknesses:

Energy Density:

• NMC (Nickel Manganese Cobalt): NMC batteries boast higher energy density. This means they can store more energy in a smaller size or lighter weight. This makes them ideal for applications where range or portability is crucial, such as electric vehicles and consumer electronics like laptops and phones.
• LFP (Lithium Iron Phosphate): LFP batteries have lower energy density compared to NMC. They might not go quite as far on a single charge in an electric vehicle, for instance.

Safety and Cycle Life:

• NMC: NMC batteries may have slightly lower thermal stability and shorter cycle life. This means they might be more prone to overheating and degrade faster over time, needing replacement sooner.
• LFP: LFP batteries shine in safety and cycle life. Their superior thermal stability makes them less likely to catch fire, even at high temperatures. Additionally, LFP batteries can undergo many more charge and discharge cycles before losing significant capacity, translating to a longer lifespan.

Other Considerations:

• Cost: LFP batteries are generally less expensive than NMC due to the materials used.
• Environmental Impact: LFP batteries are considered more environmentally friendly because the materials are more abundant and less toxic.

Here’s a table summarizing the key differences:

Feature	NMC Battery	LFP Battery
Energy Density	Higher	Lower
Safety	Lower	Higher
Cycle Life	Shorter	Longer
Cost	More Expensive	Less Expensive
Environmental Impact	Lower	Higher

In conclusion, NMC batteries prioritize power and range, while LFP batteries prioritize safety and longevity. Choosing between them depends on your specific needs. NMC might be better for electric vehicles where long range is desired, while LFP could be a better fit for stationary energy storage or applications where safety is paramount.

Is it Possible to Revive a Dead Lithium-Ion Battery?

It’s possible, but there are some key safety considerations:

• Lithium-ion batteries can be dangerous if mishandled. Reviving them involves some risk, so proceed with caution. Only attempt this if you’re comfortable with electronics and hazards.
• Not all dead batteries can be revived. If the battery is truly damaged, it’s best to dispose of it properly.

Here are some methods that might revive a dead lithium-ion battery:-

• Leave it on the charger: Sometimes a completely drained battery won’t be recognized by a charger at first. Leave it for an extended period (20 minutes or more) to see if it starts charging slowly.
• Use a special charger: Some batteries have a “revive” function for deeply discharged batteries.

Important safety precautions:

• Never force a battery to charge. Stop and dispose of it properly if it doesn’t respond after a reasonable time.
• Monitor the battery temperature closely. If it gets hot, stop charging immediately.
• Do not attempt to open or modify the battery.

Here are some resources that discuss reviving lithium-ion batteries, but use them at your own risk:

• Instructable article on Recovering Lithium-Ion Batteries
• ZDNet article on Can you safely revive a lithium-ion battery?

Why Compare Copper and Aluminium? A Detailed Analysis

Why Compare Copper and Aluminium? A Detailed Analysis

Why compare Copper and Aluminium?

1. Traditionally, copper is preferred for transformers due to its superior conductivity.
2. Aluminium offers a lighter weight and lower cost alternative.
3. Su-vastika is looking to see if Aluminium can perform well enough in their inverters.

Selection Process

1. The choice between copper and aluminum depends on the inverter’s duty cycle.
2. Key transformer specifications are identified.
3. A thermal test is conducted to see if the transformer can handle the expected load.

Why Compare Copper and Aluminium? A Detailed Analysis

Important Test Parameters

1. Primary Voltage: This is varied to assess transformer behavior under different load conditions. Specific tests like ratio polarity, and excitation current are performed based on the applied voltage. In transformer testing, the primary voltage refers to the controlled voltage applied to the transformer’s primary winding. It’s not necessarily the same voltage the transformer is rated for, but rather a variable used to evaluate its performance under different conditions.

Here’s a breakdown of the primary voltage’s role in transformer testing:

• Varied Voltage: The primary voltage can be adjusted during testing to simulate how the transformer would behave under different load conditions. This helps identify weaknesses or limitations in its operation at various power levels.

• Specific Tests: The specific value of the primary voltage used depends on the type of test being conducted. Here are some common examples:
  • Ratio and Polarity Tests: A controlled voltage is applied to the primary winding to measure the accuracy of the voltage transformation ratio between the primary and secondary windings. This test also verifies the polarity of the output voltage on the secondary side.
  • Excitation Current Test: A low voltage is applied to the primary to measure the current drawn by the transformer’s primary winding. This helps assess the efficiency of the transformer’s magnetic circuit, as this current is used to establish the magnetic field but doesn’t do any real work.

Why Compare Copper and Aluminium? A Detailed Analysis

2. Secondary Voltage: Plays a critical role in inverter operation (boosting 12V to 220V or vice versa, and charging 220V to 12V).

The test parameter of Secondary Voltage for a transformer, especially in the context of inverters, plays a critical role in evaluating its performance during voltage conversion. Here’s a breakdown of its significance:

Understanding Secondary Voltage:

• In a typical transformer, the secondary voltage is the output voltage obtained after manipulation (usually step-up or step-down) from the applied primary voltage based on the turn ratio.

Secondary Voltage in Inverter Transformers:

• Inverter transformers deal with bi-directional DC-AC and AC-DC conversion, making the role of secondary voltage slightly different.
• It’s not the sole determinant of output voltage, but it does influence it.

Key functionalities of Secondary Voltage in Inverter Transformers:

1. Boost Mode (12V DC to 220V AC):
   • In this mode, the secondary voltage acts as the increased AC output voltage.
   • The transformer acts as a step-up transformer due to the higher number of turns in the secondary coil compared to the primary.
2. Charging Mode (220V AC to 12V DC):
   • The transformer’s role here is less straightforward.
   • The rectified AC voltage (after passing through a rectifier circuit) might still be higher than the desired 12V output.
   • The transformer can play two roles in this stage:
     • Step-Down Transformer: If needed, a lower secondary-to-primary voltage ratio can further reduce the voltage before it reaches the final regulation stage.
     • Isolation: It isolates the high-voltage AC input from the lower-voltage DC output, improving safety and reducing electrical noise.

Why Compare Copper and Aluminium? A Detailed Analysis

Factors Affecting Secondary Voltage:

• Turn Ratio: The main determinant of voltage conversion. A higher ratio (more secondary turns) leads to a higher secondary voltage.
• Transformer Losses: Energy is lost within the transformer due to core and copper losses. This can cause a slight reduction in the available output voltage compared to the ideal voltage based solely on the turn ratio.

Testing Secondary Voltage:

• During testing, the secondary voltage is measured under various load conditions to assess the transformer’s ability to maintain a stable output voltage.
• This helps identify potential voltage drops or regulation issues under different operating scenarios.

3. Turn Ratio: This ratio between primary and secondary windings determines the voltage conversion.

4. Primary No-load Current: This current is essential for the magnetic field but contributes to power loss (reduced efficiency).

Why Compare Copper and Aluminium? A Detailed Analysis

Techniques to reduce it include high-quality core materials and optimized design.

1. Secondary No-load Current: Represents transformer losses within the inverter circuit, impacting overall efficiency.
2. Output Voltage Sense: This circuit monitors and regulates the inverter’s output voltage for accuracy, protection, and efficiency.
3. Primary and Secondary Winding Resistances:
   • Affects power loss due to heat generation, reducing efficiency.
   • Wire gauge and number of turns are factors affecting resistance.
4. Primary and Secondary Winding Inductances:
   • Primary: Stores energy, helps maintain current flow, and affects resonant frequency.
   • Secondary:
     • Limits current surge during switching.
     • Affects energy transfer efficiency.
     • Smooths rectified AC waveform during buck mode (220V to 12V).
5. Phase Neutral Sequence and Neutral on the AC side:
   • These depend on the inverter design and how it connects to the AC system.
6. Power Loss: Both inverter and transformer contribute to power loss.
   • Inverter losses include conduction and switching losses.
   • Transformer losses include iron losses (hysteresis and eddy current).